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ROX RESOURCES LIMITED Capital/Financing Update 2021

Jun 22, 2021

65741_rns_2021-06-22_d950b663-e567-48ed-87ef-f816e2899e00.pdf

Capital/Financing Update

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ASX ANNOUNCEMENT

23 June 2021

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RRL1756
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ROX RESOURCES LIMITED ASX: RXL

Substantial 39% increase to Youanmi Gold Project Resource to 1.7Moz

Rox Resources Limited (ASX: RXL) is an Australian listed company with advanced gold and nickel projects in Western Australia: the Youanmi Gold Project, Mt Fisher Gold project, and the Fisher East and Collurabbie Nickel projects.

DIRECTORS

Mr Stephen Dennis Chairman

Mr Alex Passmore Managing Director

Dr John Mair Non-Executive Director

Shares on Issue 2,364m Share Price $0.03 Market Cap. $70.9m Cash & Receivables $18.1m (incl $3.75m receivable, cash as at 31 Mar 2021)

Level 2, 87 Colin Street, West Perth WA 6005

+61 8 9226 0044

[email protected] www.roxresources.com.au

Highlights:

  • Youanmi Total Mineral Resources increased by 466 koz (+39%) to 1,656 koz of contained gold (Au). Junction and Link mineralisation to be incorporated in later models.

  • Mineral Resource Estimates for both Youanmi Near Surface and Youanmi Deeps Resources have realised significant increases with 48,000 metres of combined diamond and RC drilling completed and results incorporated into this estimate. Exploration work is ongoing.

  • All in exploration costs for the project since the last published resource (2019) indicates a $16 per ounce discovery cost for this addition to the resource, well below industry averages.

  • Grace Maiden Resource defined to contain 109koz of contained gold at 7 g/t Au with upside potential remaining.

  • Near Surface Resource increased by 50% to 800koz Au in total.

  • Deeps Resource shows impressive growth (+30%) to 856koz Au with high grades preserved (7.9g/t Au resource average)

  • Increase in Au metal ounces per vertical metre for Youanmi Deeps over key potential mining depths

Australian gold and nickel company, Rox Resources Limited (“Rox” or “the Company”) (ASX: RXL), in conjunction with its joint venture partner Venus Metals Corporation Limited (ASX: VMC) is pleased to report a significant increase to the mineral resource estimate (“MRE”) for the Youanmi Gold Project near Mt Magnet, WA.

Drilling and exploration work at the Youanmi Gold Project predominantly in the OYG JV area (Rox 70% and Manager, VMC 30%) has yielded substantial increases in known and defined tonnages and ounces since acquisition and commencement of drilling in Mid-2019.

Rox has used independent consultants for both the Youanmi Near Surface and Deeps areas. Widenbar Associates completed the Near Surface Resource (Youanmi Near Surface Deposits Resource Estimate June 2021 – refer Table 1) while CSA Global completed the Youanmi Deeps Resource Estimate (Report Youanmi Deeps Youanmi Deeps Mineral Resource Estimate June 2021 – refer Table 1).The previous resource for Youanmi was published in 2018 (Widenbar).

Managing Director Alex Passmore commented: “The release of the updated Youanmi Resource is a milestone for the Company (and the OYG JV) and demonstrates the strong potential to continue to grow highgrade gold resources at the Youanmi deposit. The Company is very pleased with both the expansion of the Deeps Resource as well as achieving a considerable increase in inventory to the Near Surface Resource areas including some spectacular results at Grace which contains 109,000 ounces at an average gold grade of 7 g/t Au at shallow depths. An overall increase in gold resources of 39% is a great result, as is the $16 /oz discovery cost realised to achieve these results.

This resource update also highlights Rox’s low enterprise value per attributable resource ounce which based on the Company’s last reported cash balance (March 2021) and current market capitalisation is calculated to be only $45 per ounce. On the back of the resource upgrade, we will be commencing the Youanmi Mine Feasibility Study. Drilling will continue at Youanmi with a focus on the ongoing conversion of inferred material into indicated categories for both the Deeps and Near Surface Resources and extension of the Youanmi Deeps along strike and down dip. In addition, regional grass roots exploration drilling will continue on our extensive tenement interests with the intent of making new discoveries in the area.”

Summary of Youanmi Mineral Resource 2021 (incl. comparison to 2018)

Youanmi Resources Remaining June Youanmi Resources Remaining June 2021 Change in Previously (Widenbar 2018)
Area ClassificationCut-Off Tonnes **Au Grade ** Au Metal Au Metal Tonnes **Au Grade ** Au Metal
(dmt) (g/t) (oz) (%) (dmt) (g/t) (oz)
Near Surface Indicated 0.5 g/t* 7,470,000 1.81 434,000 up 63% 4,720,000 1.76 266,200
Deeps Indicated 4.0 g/t 1,097,000 8.23 290,200 up 38% 808,000 8.1 210,200
SubTotal Indicated 8,567,000 2.63 724,200 up 52% 5,528,000 2.68 476,400
Near Surface Inferred 0.5 g/t* 7,240,000 1.57 366,000 up 37% 5,360,000 1.55 266,500
Deeps Inferred 4.0 g/t 2,279,000 7.73 566,200 up 26% 1,605,000 8.7 447,700
SubTotal Inferred 9,519,000 3.05 932,200 up 31% 6,965,000 3.19 714,200
Near Surface Ind + Inf 0.5 g/t* 14,710,000 1.69 800,000 up 50% 10,070,000 1.65 532,700
Deeps Ind + Inf 4.0 g/t 3,377,000 7.89 856,300 up 30% 2,413,000 8.48 657,900
Near Surface + Deeps Ind + Inf 18,087,000 2.85 1,656,300 up 39% 12,483,000 2.97 1,190,600
  • Grace 1.5 g/t Cutoff

Comparison to 2018 Resource Estimates (Widenbar 2018):

An overall increase of 39% in contained gold has been achieved, with a 52% increase in metal in the Indicated category, and a 31% increase in the Inferred category (Figure 1 below). Cut-off grades remained the same as those used in the 2018 estimate (i.e. 4g/t Au for Deeps and 0.5g/t Au for Near Surface) and 1.5 g/t Au was used for Grace.

2

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

[email protected] www.roxresources.com.au

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Tonnes (000 t) Contained Au Metal (koz)
20,000 1,800
18,000 1,600
16,000
1,400
14,000
Inferred 1,200 Inferred
12,000
1,000
10,000
Inferred 800 Inferred
8,000
600
6,000
4,000 Indicated 400 Indicated
2,000 Indicated 200 Indicated
0 0
2018 2021 2018 2021
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FIGURE 1 – Chart showing increase in tonnes and metal for combined Youanmi Mineral Resource

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FIGURE 2 – 3D View of Youanmi Deeps Resource Model and Near Mine Part of Near Surface Model

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

3

[email protected] www.roxresources.com.au

Youanmi Deeps Resource Discussion:

Twenty-three mineralised lodes were modelled using Leapfrog software for wireframe interpretations, along an approximately 2.2 km of strike length, comprising the Main Lode and associated footwall and hanging wall lodes along the main trend corridor.

The estimation process estimated both the grade-thickness and the intersection thickness using ordinary kriging. The block grades were calculated by dividing the grade-thickness by the estimated thickness (which is not the same as the actual physical thickness of the wireframe interpretation).

The hanging wall and footwall lodes are predominantly 0.5 m to 2.0 m thick, while the Main Lode is generally on the order of 1.0 m to 3.0 m thick, but locally exceeds 10.0 m.

The lode intersections were interpreted based on several characteristics, such as grade, shearing, degree of mylonitisation, veining, sulphide content, or alteration and bleaching. Intervals were generally selected using the assay tables, verified using core photographs and logging, except where historic core was unsampled, in which case lithology tables were used.

Pinch-outs were applied manually around the peripheries and at roughly half of the average data-spacing, up to 40 m.

To subset the lode interpretations into the higher-grade shoots, a statistical approach was adopted, using Leapfrog to model the grade-thickness variable. The grade-thickness composite dataset was then constrained to those points inside the high-grade shoot models.

As is illustrated in Figure 3, progression from the previously quoted resource (2018) shows significant depth extension below the -340 mRL as well as tightening up the model above this reflecting the different modelling technique applied and demonstrating a more conservative approach along strike. Increased resource tonnage and metal was also due in part to more lodes being identified and interpreted east and west of the main lode.

Resources ounces per vertical metre (OVM) increased significantly in localised areas including in the upper levels (above 210 mRL), and intermediate levels (below 70mRL to -150mRL). In the area between -170 mRL and -290 mRL the updated resource was more conservative in the Inferred category, hence the reduction shown through this area in Figure 6 which shows total OVM, however the Indicated portion through this area increased from 170 OVM to around 940 OVM, which is an impressive result.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

4

[email protected] www.roxresources.com.au

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UNITED NORTH PIT HILL END PIT MAIN PIT
N
May 2018
Widenbar
658 koz Au
Indicated Metal Up 38% to 290 koz
Inferred Metal Up 26% to 566 koz
Total Metal Up 30% to 856 koz
FIGURE 3 – Deeps Resource and Near Surface Resource Model Au grade distribution in area near pits,
showing progression of Deeps Model from 2018 (Deeps is below 300 mRL).
Ounces per Vertical Metre Comparisons
4,000
2018 Model
3,500
3,000 June 2021 Updated Model (20210618) - 4 g/t Au Cutoff
Increased depth
by 180 m
2,500
93,793 oz Au
2,000
below -340 mRL
1,500
1,000
500
Localised OVM Increases
0
mRL
290 270 250 230 210 190 170 150 130 110 90 70 50 30 10 -10 -30 -50 -70 -90 -110 -130 -150 -170 -190 -210 -230 -250 -270 -290 -310 -330 -350 -370 -390 -410 -430 -450 -470 -490 -510
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FIGURE 3 – Deeps Resource and Near Surface Resource Model Au grade distribution in area near pits, showing progression of Deeps Model from 2018 (Deeps is below 300 mRL).

FIGURE 4 – Chart Showing Increase in Ounces per Vertical Metre (Deeps Model only <300 mRL)

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

5

[email protected] www.roxresources.com.au

Youanmi Near Surface Deposits Resource Discussion:

The Near Surface Resource Estimate comprised of seven main areas as is summarised below.

Near Surface Resources by Area

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For the purpose of block modelling a total of 21 areas were defined with each having their own variogram modelling parameters assigned. The block model grade estimation methodology used ordinary kriging interpolation within Micromine 2021 software. Search distances and orientations were unique to each of the individual areas. The Currans Find deposits used Inverse Distance Cubed estimation methodology as there was too little data for robust variogram calculation.

Block model validation was carried out in several ways, including visual inspection on sections, long sections and plans, and in 3D, model vs composite statistics, swathe plot validation with all validation methods producing reasonable results.

The Grace deposit which is high grade and has a relatively high nugget has a higher cut-off grade of 1.5 g/t Au applied to it resulting in a total resource of 490,000 tonnes at 6.95 g/t Au for 109,000 ounces.

This mineral resource estimate includes maiden resources for Grace and Currans Find deposits.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

6

[email protected] www.roxresources.com.au

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FIGURE 5 – Plan Showing Near Surface Resource (not including Airstrip 1km to the south, Commonwealth 1km to the north, and Curran’s Find 30km to the south)

ASX CODE: RXL

ROX RESOURCES LIMITED 7 Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

[email protected] www.roxresources.com.au

==> picture [432 x 576] intentionally omitted <==

FIGURE 6 – Grace Resource (excluding laterite mineral resource cover)

ASX CODE: RXL

ROX RESOURCES LIMITED 8 Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

[email protected] www.roxresources.com.au

Next Steps

On the back of this resource upgrade the Company has commenced studies into the optimal production scenarios at Youanmi. These studies will feed into a detailed feasibility study which is due for completion in the second half of next year. The various studies include metallurgical test work, development of a geo-metallurgical model, processing plant design, pit optimisation, underground mining optimisation, dewatering and geotechnical studies, waste rock characterisation and environmental baseline testing.

In parallel to the study outlined above the Company is undertaking an extensive regional exploration program and a drilling program in the near-mine area. Ongoing exploration results will be released to the market as they come to hand.

The Company is highly confident that the resource inventory at Youanmi will continue to grow rapidly as results from this program are incorporated into further resource estimates.

Authorised for release to ASX by Alex Passmore, Managing Director.

* ENDS ***

For more information:

Alex Passmore Managing Director Rox Resources Limited Tel: +61 8 9226 0044 [email protected]

Matt Hogan Managing Director Venus Metals Corporation Limited Tel: +61 8 9321 7541

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

9

[email protected] www.roxresources.com.au

Competent Person’s Statement

The information in this release that relates to the Youanmi Near Surface Deposits is based on information compiled by Mr Lynn Widenbar, a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy. Mr Widenbar is a full time employee of Widenbar and Associates Pty Ltd. Mr Widenbar visited site on 9th and 10th May 2018 and reviewed the general site layout, open pit exposures, diamond drill core and the detailed paper data available in the map room and has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity that is being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Minerals Resources and Ore Reserves’. Mr Widenbar consents to the inclusion in the release of the matters based on his information in the form and context that the information appears.

The information in this release that relates to the Youanmi Deeps Mineral Resource is based on information compiled by Phil Jankowski MSc MAusIMM(CP), who is a full-time employee of CSA Global and who visited the Youanmi site from the 2nd and 4th of June 2021, and has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity that is being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Minerals Resources and Ore Reserves’. Mr Jankowski consents to the inclusion in the release of the matters based on his information in the form and context that the information appears.

ForwardLooking Statements

‐ ‐ This document may include forward looking statements. Forward looking statements include, but are not limited to, statements concerning Rox Resources Limited planned exploration program(s) and other statements that are not historical facts. When used in this document, the words such as "could," "plan," "estimate," "expect," "intend," "may”, "potential," "should," and similar expressions are forward looking statements.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

10

[email protected] www.roxresources.com.au

_______________

About Rox Resources

Rox Resources Limited is an emerging Australian minerals exploration Company. The Company has a number of key assets at various levels of development with exposure to gold, nickel, copper and platinum group elements (PGE’s). The 1.7Moz Youanmi Gold Project and the Fisher East Nickel Project (78kt Ni) being the most advanced projects with exploration ongoing at the Mt Fisher Gold Project and the Collurabbie Nickel-Copper-PGE Project.

Youanmi Gold Project (Youanmi Gold Mine 70%, Regional JV’s 45% - 50%)

The Youanmi Gold Mine is located 480 km to the northeast of Perth, Western Australia. The Youanmi Mining Centre has produced an estimated 667,000 oz of gold (at 5.47 g/t Au) since discovery in 1901 during three main periods: 1908 to 1921, 1937 to 1942, and 1987 to 1997.

The project is situated in the Youanmi Greenstone Belt, within the Southern Cross Province of the Archaean Yilgarn Craton in Western Australia. The structure of the Youanmi Project is dominated by the north-trending Youanmi Fault Zone. Most of the gold mineralisation seen at the project is hosted within north-northwest splays off the north-northeast trending Youanmi Fault.

Fisher East Nickel Project (100%)

The Fisher East nickel project is located in the North Eastern Goldfields region of Western Australia and hosts several nickel sulphide deposits. The total project area is ~350km2.

Discovery of, and drilling at the Camelwood, Cannonball and Musket nickel prospects has defined a JORC 2012 Mineral Resource (ASX:RXL 5 February 2016) of 4.2Mt grading 1.9% Ni reported at 1.0% Ni cut-off (Indicated Mineral Resource: 3.7Mt grading 1.9% Ni, Inferred Mineral Resource: 0.5Mt grading 1.5% Ni) comprising massive and disseminated nickel sulphide mineralisation, and containing 78,000 tonnes of nickel. Higher grade mineralisation is present in all deposits (refer to ASX announcement above) and is still open at depth beneath each deposit. Additional nickel sulphide deposits continue to be discovered (e.g. Sabre) and these will add to the resource base. Exploration is continuing to define further zones of potential nickel sulphide mineralisation.

Collurabbie Gold-Nickel Project (100%)

The Collurabbie project is located in the highly prospective North Eastern Goldfields region of Western Australia and is prospective for gold and nickel. The project area of ~123km2 hosts the Olympia nickel sulphide deposit and a number of other prospects for nickel sulphide mineralisation. A JORC 2012 Inferred Mineral Resource of 573,000t grading 1.63% Ni, 1.19% Cu, 0.082% Co, 1.49g/t Pd, 0.85g/t Pt has been defined at Olympia (ASX: RXL 18 August 2017). The style of nickel sulphide mineralisation is different to that at Fisher East, with a significant copper and PGE component at Collurabbie, and has been compared to the Raglan nickel deposits in Canada (>1Mt contained nickel). In addition, there is potential for gold mineralisation, with several strong drilling intersections including 2m @ 2.4g/t Au from the Naxos prospect.

Mt Fisher Gold Project (100%)

The Mt Fisher gold project is located in the North Eastern Goldfields region of Western Australia, adjacent to the Fisher East nickel project, and hosts several gold deposits. The total project area is ~220km2.

Drilling by Rox has defined numerous high-grade gold targets and a JORC 2012 Measured, Indicated and Inferred Mineral Resource (ASX:RXL 11 July 2018) of 1.0 million tonnes grading 2.7 g/t Au reported at a 0.8 g/t Au cut-off exists for 89,000 ounces of gold (Measured: 170,000 tonnes grading 4.1 g/t Au, Indicated: 220,000 tonnes grading 2.7 g/t Au, Inferred: 630,000 tonnes grading 2.3 g/t Au) aggregated over the Damsel, Moray Reef and Mt Fisher deposits.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

11

[email protected] www.roxresources.com.au

Summary of the Resource Parameters:

A summary of JORC Table 1 is provided below for each of the “Youanmi Near Surface Deposits – June 2021” (pages 9 to 24) and “Youanmi Deeps Mineral Resource Estimate – June 2021” (pages 25 to 41), and the compliance regarding the Mineral Resource reported within and in-line with requirements of ASX Listing Rule 5.8.1.

Rox Resources Limited – Youanmi Near Surface Deposits – June 2021

JORC Code, 2012 Edition – Table 1

Section 1 Sampling Techniques and Data

Criteria JORC Code explanation Commentary
Sampling
techniques
Nature and quality of sampling (eg cut
channels, random chips, or specific
RC samples were collected over 1m
intervals and riffle split, bagged and
specialised industry standard measurement
dispatched to the laboratories
tools appropriate to the minerals under
investigation, such as down hole gamma
sondes, or handheld XRF instruments, etc).

Diamond core was cut according to
lithological intervals and dispatched to the
laboratories.
These examples should not be taken as
limiting the broad meaning of sampling. .
Include reference to measures taken to
ensure sample representivity and the
appropriate calibration of any measurement
tools or systems used.
Aspects of the determination of
mineralisation that are Material to the Public
Report.
In cases where ‘industry standard’ work has
been done this would be relatively simple
(eg ‘reverse circulation drilling was used to
obtain 1 m samples from which 3 kg was
pulverised to produce a 30 g charge for fire
assay’). In other cases more explanation
may be required, such as where there is
coarse gold that has inherent sampling
problems. Unusual commodities or
mineralisation types (eg submarine
nodules) may warrant disclosure of detailed
information.
Drilling
techniques
Drill type (eg core, reverse circulation,
open-hole hammer, rotary air blast, auger,
The Youanmi Near Surface Deposits
Resource Estimate is based on the results
Bangka, sonic, etc) and details (eg core of 2,344 RC drill holes and 427 diamond

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

12

[email protected] www.roxresources.com.au

Criteria JORC Code explanation Commentary
diameter, triple or standard tube, depth of core drill holes.
diamond tails, face-sampling bit or other
type, whether core is oriented and if so, by
what method, etc).
All RC drilling used face sampling
hammers. Diamond drilling, predominantly
made use of NQ size drill bits.
Rox RC hole diameter was 5.5" (140 mm)
reverse circulation percussion (RC). Drill
holes were generally angled at -65°°
towards grid northeast to intersect geology
as close to perpendicular as possible
Drill sample
recovery
Method of recording and assessing core
and chip sample recoveries and results
Limited records relating to historical RC or
diamond core sample recoveries have been
assessed. identified, however, where described,
Measures taken to maximise sample
recovery and ensure representative nature
of the samples.
sampling and recovery procedures are
consistent with standard Australian industry
standards (Yeates, R.J. 2003).
Whether a relationship exists between
sample recovery and grade and whether
sample bias may have occurred due to
preferential loss/gain of fine/coarse
Rox RC drill recoveries were high (>90%).
Samples were visually checked for
recovery, moisture and contamination and
notes made in the logs.
material. There is no observable relationship
between recovery and grade, and therefore
no sample bias.
Logging Whether core and chip samples have been All RC and diamond core samples were
geologically and geotechnically logged to a geologically logged. RC drilling returns
level of detail to support appropriate Mineral
were logged in sufficient detail, recording all
Resource estimation, mining studies and significant properties, to allow geological
metallurgical studies. maps and sections to be constructed.
Whether logging is qualitative or .Detailed geological logs have been carried
quantitative in nature. Core (or costean, out on all Rox RC holes, but no
channel, etc) photography. geotechnical data have been recorded (or
The total length and percentage of the
relevant intersections logged.
is possible to be recorded due to the nature
of the sample).
Logging of Rox RC chips recorded
lithology, mineralogy, mineralisation,
weathering, colour, and other sample
features. RC chips are stored in plastic RC
chip trays.
Sub-
sampling
techniques
If core, whether cut or sawn and whether
quarter, half or all core taken.
Most of the historical diamond core was
sampled using a diamond saw to provide
If non-core, whether riffled, tube sampled, half core with a maximum sample length of

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

13

[email protected] www.roxresources.com.au

Criteria JORC Code explanation Commentary
and sample rotary split, etc and whether sampled wet or
1m.
preparation dry. Most of the historical RC intervals were
For all sample types, the nature, quality and
sampled on a 1m basis via a cyclone into a
appropriateness of the sample preparation plastic bag prior to splitting with a Jones
technique. riffle splitter.
Quality control procedures adopted for all Resampling of RC samples took place
sub-sampling stages to maximise where composite assays were greater than
representivity of samples. 50ppb, 80ppb or 250ppb Au depending
Measures taken to ensure that the sampling
upon the programme.
is representative of the in situ material Rox RC samples were collected on the drill
collected, including for instance results for rig using a cone splitter. If any mineralised
field duplicate/second-half sampling. samples were collected wet these were
Whether sample sizes are appropriate to
the grain size of the material being
sampled.
noted in the drill logs and database.AC
samples were scooped directly from drill
sample piles
The Rox sample preparation followed
industry best practice. Photon samples
were dried, crushed to nominal minus 3mm,
and c. 500g linear split into photon assay
jars for analysis.
Fire Assay samples were dried, coarse
crushing to ~10mm, followed by
pulverisation of the entire sample in an LM5
or equivalent pulverising mill to a grind size
of 85% passing 75 micron.
Quality of
assay data
and
The nature, quality and appropriateness of
the assaying and laboratory procedures
The majority of the historical assays used in
the final resource estimate are reportedly
laboratory used and whether the technique is by Fire Assay, with a minority by Aqua
tests considered partial or total. Regia digest; however there is no
For geophysical tools, spectrometers,
handheld XRF instruments, etc, the
information currently available on the assay
methodology, so this cannot be confirmed.
parameters used in determining the Most of the historical diamond core
analysis including instrument make and samples were assayed at Metana in-house
model, reading times, calibrations factors laboratory, mainly using fire assay
applied and their derivation, etc. techniques.
Nature of quality control procedures Goldcrest samples were assayed for Au at
adopted (eg standards, blanks, duplicates, Genalysis Laboratories of Maddington,
external laboratory checks) and whether Perth, using 50g charge fire assay to
acceptable levels of accuracy (ie lack of 0.01ppm detection limit.
bias) and precision have been established. Rox field QC procedures involve the use of
Certified Reference Materials(CRM’s)as

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

14

[email protected] www.roxresources.com.au

Criteria JORC Code explanation Commentary
assay standards, along with duplicates and
blank samples. The insertion rate of these
was approximately 1:20
For Rox RC drilling field duplicates were
taken on a routine basis at an approximate
1:20 ratio using the same sampling
techniques (i.e. cone splitter) and inserted
into the sample run.
The sample sizes are considered more than
adequate to ensure that there are no
particle size effects relating to the grain size
of the mineralisation which lies in the
percentage range.
The analytical technique involved
Photonassay method on 500g sub-sample.
The analytical technique involved Fire
Assay 50g for check samples.
Internal laboratory control procedures
involve duplicate assaying of randomly
selected assay pulps as well as internal
laboratory standards. All of these data are
reported to the Company and analysed for
consistency and any discrepancies
Verification
of sampling
and assaying

The verification of significant intersections
by either independent or alternative
Historical assay quality control measures
are largely unknown.
Company personnel. Regular duplicates with satisfactory results
The use of twinned holes. were reported from some programmes. The
Documentation of primary data, data entry
procedures, data verification, data storage
(physical and electronic) protocols.
Metana (bulk of historical samples)
laboratory appears to have systematically
undertaken a 10% duplicate fire assay
analysis. No system of submission of
Discuss any adjustment to assay data. standard reference material and blank
samples is believed to have been in place
at the time of this drilling, in line with local
industry practice at that time
Goldcrest took field duplicates, standards
and blanks on an approximate 1 in 20 basis
(5%) and all Goldcrest drill samples were
submitted for assay.
Goldcrest twin drilling in shallower areas
has verified the drill results of previous

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

15

[email protected] www.roxresources.com.au

Criteria JORC Code explanation Commentary
explorers.
The majority of the historical assay data
relate to resources that have subsequently
been mined. Historical quality assurance
and quality control data relating to the
remaining resources is either no longer
available or is inconsistently reported.
Given the large amount of exploration data
and the long time period over which the
data was generated it was not possible for
RSG (Yeates, 2003) to independently verify
the quality of the data.
Senior Rox personnel from the
Companyhave visually inspected
mineralisation within significant
intersections
Two twin RC holes have been completed
by Rox at the Grace Prospect and confirm
reliability of previous results
Primary data was collected using a
standard set of Excel templates on
Toughbook laptop computers in the field.
These data are transferred to Geobase Pty
Ltd for data verification and loading into the
database.
No adjustments of assay data are
considered necessary.
Location of
data points
Accuracy and quality of surveys used to
locate drill holes (collar and down-hole
Historical data was surveyed in a mixture of
local and AMG84 coordinates.
surveys), trenches, mine workings and
other locations used in Mineral Resource
estimation.
Goldcrest drill hole positions was originally
surveyed to sub-metre accuracy using
Differential GPS and/or total Station
Specification of the grid system used. systems on the AMG84 grid. Eastmet/GMA
Quality and adequacy of topographic survey was by mine surveyors.
control. All location and topographic data has
subsequently been converted to the GDA94
Zone 50 Datum.
Approximately 50% of drill holes have been
down-hole surveyed. Drill holes less than
100 m long typically show a minor degree
of down-hole deviation.

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Criteria JORC Code explanation Commentary
Rox Drill hole locations have been
established using a field GPS unit
The topography of the mined open pits is
well defined by monthly survey pickups.
The reliability of the survey data for
previously mined underground voids is
highly variable; with some of the data
having questionable accuracy.
Data spacing
and

Data spacing for reporting of Exploration
Average drill hole density is highly variable,
distribution Results. ranging from 10m x 10m to 160m x 160m,
Whether the data spacing and distribution is
and generally decreasing with depth.
sufficient to establish the degree of No sample compositing has occurred for
geological and grade continuity appropriate diamond core drilling. Sample intervals are
for the Mineral Resource and Ore Reserve based on geological boundaries with even
estimation procedure(s) and classifications one metre samples between.
applied. For RC samples, 1m samples through
Whether sample compositing has been target zones were sent to the laboratory for
applied. analysis. The remainder of the hole was
sampled using 4m composite samples.
For 4m composite samples >0.25g/t Au, 1m
samples were collected and sent to the
laboratory for analysis
Orientation
of data in
Whether the orientation of sampling The mineralisation strikes generally NNW-
relation to achieves unbiased sampling of possible SSE and dips to the west at approximately -
geological structures and the extent to which this is 50 degrees. In the Youanmi Main Shear
structure known, considering the deposit type. there is generally a 30 degree plunge to the
If the relationship between the drilling North West
orientation and the orientation of key RC and diamond drill holes were oriented,
mineralised structures is considered to wherever possible, perpendicular to the
have introduced a sampling bias, this main shear/ore zone structures containing
should be assessed and reported if the mineralisation.
material.
Sample
security
The measures taken to ensure sample
security.
The chain of custody for historical samples
is not well documented, but was reviewed
by RSG (Yeates, 2003) and found to be
consistent with the standard practice for the
time.
Audits or
reviews
The results of any audits or reviews of Goldcrest conducted a thorough review of
sampling techniques and data. historical sampling and assay techniques

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Criteria JORC Code explanation Commentary
and data in September, 2004.
No toher sampling audits have been carried
out to date

Section 2 Reporting of Exploration Results

Criteria JORC Code explanation Commentary
Mineral
tenement and

Type, reference name/number, location
Rox Resources Ltd is in a Joint Venture
land tenure and ownership including agreements or Agreement with Venus Metals Corporation
status material issues with third parties such as Ltd under which it has a 70% interest in the
joint ventures, partnerships, overriding Youanmi Gold Mine Joint Venture (OYG Joint
royalties, native title interests, historical Venture). Tenements in the JV consist of the
sites, wilderness or national park and following mining leases: M 57s /10,
environmental settings. 51,76,97,109, 135, 160A, 164, 165, 166 and
The security of the tenure held at the time
167.
of reporting along with any known The tenement isin good standing and no
impediments to obtaining a licence to known impediments exist
operate in the area.
Exploration
done by other
parties

Acknowledgment and appraisal of
exploration by other parties.
Significant previous exploration has been
carried out throughout the project by various
companies, including AC/RAB, RC drilling
and diamond drilling
1971-1973 WMC: RAB, RC and surface
diamond drilling
1976 Newmont: 10 surface diamond
drillholes (predominantly targeting base
metals).
1980-1986 BHP: RAB, RC and surface
diamond drilling (predominantly targeting
base metals).
1986-1993 Eastmet: RAB, RC and surface
diamond drilling.
1993-1997 Goldmines of Australia: RAB, RC
and surface diamond drilling. Underground
mining and associated underground diamond
drilling.
2000-2003 Aquila Resources Ltd: Shallow
RAB and RC drilling
2004-2005 Goldcrest Resources Ltd: Shallow

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Criteria JORC Code explanation Commentary
RAB and RC drilling; data validation.
2007-2013 Apex Minerals NL: 9 diamond
holes targeting extensions to the Youanmi
deeps resource.
Geology Deposit type, geological setting and style The Youanmi Project straddles a 40km strike
of mineralisation. length of the Youanmi Greenstone Belt, lying
within the Southern Cross Province of the
Archaean Yilgarn Craton in Western
Australia.
The greenstone belt is approximately 80km
long and 25km wide, and incorporates an
arcuate, north-trending major crustal
structure termed the Youanmi Fault Zone.
This structure separates two discordant
greenstone terrains, with the stratigraphy to
the west characterised by a series of weakly
deformed, layered mafic complexes
(Windimurra, Black Range, Youanmi and
Barrambie) enveloped by strongly deformed,
north-northeast trending greenstones.
Gold mineralisation is developed semi-
continuously in shear zones over a strike
length of 2,300m along the western margin of
the Youanmi granite.
The Youanmi gold lodes are invariably
associated with a high pyrite and
arsenopyrite content and the primary ore is
partially to totally refractory.
There are a series of major fault systems
cutting through the Youanmi trend
mineralisation that have generated some
significant off-sets.
The Youanmi Deeps project area is
subdivided into three main areas or fault
blocks by cross-cutting steep south-east
trending faults; and these are named Pollard,
Main, and Hill End from south to north
respectively.
Granite hosted gold mineralisation occurs at
several sites, most notably Grace and the
Plant Zone Prospects.

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Criteria JORC Code explanation Commentary
Gold mineralization occurs as free particles
within quartz-sericite altered granite shear
zones.
The Commonwealth-Connemarra
mineralised trend is centred 4km northwest of
the Youanmi plant. The geology comprises a
sequence of folded mafic and felsic volcanic
rocks intercalated with BIF and intruded by
granite along the eastern margin. Gold
mineralisation is developed over a 600m
strike length, associated with a north trending
and steeply west dipping shear zone that
traverses the northwest trending succession.
Drill hole
Information
A summary of all information material to Refer to details of drilling in tables in the body
the understanding of the exploration of this report and the appendices.
results including a tabulation of the
following information for all Material drill
holes:
easting and northing of the drill hole collar
elevation or RL (Reduced Level –
elevation above sea level in metres) of
the drill hole collar
dip and azimuth of the hole
down hole length and interception depth
hole length.
If the exclusion of this information is
justified on the basis that the information
is not Material and this exclusion does
not detract from the understanding of the
report, the Competent Person should
clearly explain why this is the case.
Data
aggregation
methods
In reporting Exploration Results,
weighting averaging techniques,
All intervals reported are length weighted. A
lower cut-off grade of 0.5 gm/t Au has been
maximum and/or minimum grade used in conjunction with geological logging to
truncations (eg cutting of high grades) assess significant intercepts.
and cut-off grades are usually Material
and should be stated.
No metal equivalent values have been used
or reported.
Where aggregate intercepts incorporate
short lengths of high grade results and
longer lengths of lowgrade results, the

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Criteria JORC Code explanation Commentary
procedure used for such aggregation
should be stated and some typical
examples of such aggregations should be
shown in detail.
The assumptions used for any reporting of
metal equivalent values should be clearly
stated.
Relationship
between
These relationships are particularly important Exploration intercepts are not being reported.
mineralisation
widths and
intercept
lengths
in the reporting of Exploration Results.
If the geometry of the mineralisation with
respect to the drill hole angle is known, its
nature should be reported.
However, where possible drill holes are
oriented to cut at right angles across the
mineralised zones.
If it is not known and only the down hole
lengths are reported, there should be a clear
statement to this effect (eg ‘down hole length,
true width not known’).
Diagrams Appropriate maps and sections (with scales) Appropriate maps and sections are available
and tabulations of intercepts should be in the body of the report.
included for any significant discovery being
reported These should include, but not be
limited to a plan view of drill hole collar
locations and appropriate sectional views.
Balanced
reporting
Where comprehensive reporting of all
Exploration Results is not practicable,
Reporting of results in this report is
considered balanced.
representative reporting of both low and high
grades and/or widths should be practiced to
avoid misleading reporting of Exploration
Results.
Other
substantive

Other exploration data, if meaningful and
material, should be reported including (but
Exploration results are not being reported.
exploration not limited to): geological observations;
data geophysical survey results; geochemical
survey results; bulk samples – size and
method of treatment; metallurgical test
results; bulk density, groundwater,
geotechnical and rock characteristics;
potential deleterious or contaminating
substances.
Further work The nature and scale of planned further Further work will include infill and extension
work (eg tests for lateral extensions, drilling.
depth extensions or large-scale step-out
drilling).
Diagrams clearly highlighting the areas of

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Criteria JORC Code explanation Commentary
possible extensions, including the main
geological interpretations and future
drilling areas, provided this information is
not commercially sensitive.

Section 3 Estimation and Reporting of Mineral Resources

(Criteria listed in section 1, and where relevant in section 2, also apply to this section.)

Criteria JORC Code explanation Commentary
Database Measures taken to ensure that data has Goldcrest completed a stringent validation of
integrity not been corrupted by, for example, the historical database, excluding unreliable
transcription or keying errors, between data as relevant.
its initial collection and its use for Standard validation techniques have been
Mineral Resource estimation purposes. applied to the data of Goldcrest Mines and
Data validation procedures used. previous explorers.
The Rox Youanmi project database is
managed by Geobase Australia Pty Ltd using
the Azeva.XDB Database Management
System.
The database is stored using the Microsoft’s
SQL Server 2019 database engine on a
Secure Network server running the latest SBS
Administrative access to the database is
restricted to Geobase Personnel only who
have been trained in database management.
All appropriate and valid changes requested
from site are made only by Geobase. Site
personnel do not have the ability to edit the
database, which allows the integrity of the data
to be maintained.
Geobase generates a backup of the database
and associated data on a regular basis
The database is configured to store assay
quality control measures undertaken on the
assaying.
The following types of quality control data for
assaying is stored:

Field Introduced Quality Control
Sampling Measures:

Field Duplicates – To test the
repeatability of samples sourced in the
field

Field Introduced Standards

Laboratory Introduced Quality Control
Sampling Measures:

Laboratory Introduced Standards

Coarse Reject Repeats – Repeat
samples selected from the first stage
samplepreparation bythe laboratory

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Criteria JORC Code explanation Commentary

Assay Reproducibility Tests –
Designed to test the reproducibility of
the sample analysis, undertaken by
the laboratory as a separate batch, run
with samples sourced from the primary
pulp sample

Assay Repeatability Tests – Designed
to test repeatability of samples,
undertaken by the laboratory during
the main assay run and sourced from
the primary pulp sample

Alternative Lab Checks – Repeat
analysis of pulp samples at different
laboratory/s

Sample Weights – Assessing the
sample weight distribution
The data is subject to a number of validation
procedures which were performed during
various stages of data collation. Validation
methods included code, multi-table and
spatial. The database contains validation
scripts which prevent non-standard character
codes being used and also checks numeric
values against a minimum and maximum
range.
All previous codes have been made consistent
with the new standardized coding system. This
allowed rationalization of codes between
different generations of companies, geologists
and logging methodologies, and also removed
any typographical errors.
Validation on the spatial distribution of drill hole
or surface sampling data is often difficult. This
process is ongoing as more detailed
assessment of the drillingis undertaken.
Site visits Comment on any site visits undertaken The Competent Person visited site on 9thand
by the Competent Person and the 10thMay 2018 and reviewed the general site
outcome of those visits. layout, open pit exposures, diamond drill core
If no site visits have been undertaken and the detailed paper data available in the
indicate why this is the case. maproom.
Geological Confidence in (or conversely, the Interpretation of the lithological boundaries and
interpretation uncertainty of ) the geological the proposal of a conceptual model for the
interpretation of the mineral deposit. mineralisation are supported by a sufficient
Nature of the data used and of any amount of drilling.
assumptions made. Geological continuity is based upon a coherent
The effect, if any, of alternative and predictable model, and is confirmed in
interpretations on Mineral Resource both sectional and plan analyses. The model is
estimation. an acceptable genetic model of shear hosted
The use of geology in guiding and gold mineralisation.
controlling Mineral Resource estimation. A geological model was developed using all
The factors affecting continuity both of available diamond core and RC drill hole data
grade and geology. and surface exposures.
A three dimensional mineralised shell was

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Criteria JORC Code explanation Commentary
constructed using indicator modelling at a
nominal 0.3 g/t cut-off, and this was
subsequently filled with blocks for grade
estimation.
Further drilling and/or mapping is expected to
refine thegeological model in the future..
Dimensions The extent and variability of the Mineral The Youanmi Near Surface Resource
Resource expressed as length (along comprises several zones of mineralisation
strike or otherwise), plan width, and comprising ~2.75 km strike length and 100m to
depth below surface to the upper and 280m depth extent, and trending between 320°
lower limits of the Mineral Resource. and 350°.
Dips are variable between 30° and 70° to the
west with a plunge of +/- 30° to the North West
in the Youanmi Main Shera Zone.
The width of mineralised zones varies from 2m
to more than 30m.
Estimation The nature and appropriateness of the The resource estimations were generated
and
modelling
techniques
estimation technique(s) applied and key
assumptions, including treatment of
extreme grade values, domaining,
using Ordinary Kriging Interpolation
techniques, using Micromine 2021 software.
Higher grade outlier samples were cut on a
interpolation parameters and maximum area basis.
distance of extrapolation from data Parent cell block sizes were 5m x 10m x 5m,
points. If a computer assisted estimation
rotated to a strike of 330°. Sub-celling was
method was chosen include a used to honour geological, open pit and
description of computer software and underground void boundaries.
parameters used. Model interpolation honoured the indicator
The availability of check estimates, mineralisation boundaries, with only
previous estimates and/or mine composites within a domain being used to
production records and whether the estimate that domain.
Mineral Resource estimate takes The final block model grades were checked
appropriate account of such data. with respect to the local area geometry and
The assumptions made regarding area statistical summaries
recovery of by-products. Block model validation has been carried out by
Estimation of deleterious elements or the Competent Person using several methods,
other non-grade variables of economic including:
significance (eg sulphur for acid mine
Drill Hole Plan and Section Review
drainage characterisation).
Model versus Data Statistics by
In the case of block model interpolation, Domain
the block size in relation to the average
Easting, Northing and RL swathe plots
sample spacing and the search
employed.
Any assumptions behind modelling of
selective mining units.

Comparison with historical production
All validation methods have produced
acceptable results.
Any assumptions about correlation
between variables.
Description of how the geological
interpretation was used to control the
resource estimates.
Discussion of basis for using or not
using grade cutting or capping.
The process of validation, the checking
process used, the comparison of model
data to drill hole data, and use of

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Criteria JORC Code explanation Commentary
reconciliation data if available.
Moisture Whether the tonnages are estimated on Tonnages are estimated on a dry basis.
a dry basis or with natural moisture, and
the method of determination of the
moisture content.
Cut-off The basis of the adopted cut-off All Mineral Resources have been reported at a
parameters grade(s) orquality parameters applied. series of lower cut-offs. .
Mining Assumptions made regarding possible It has been assumed that the Youanmi Near
factors or
assumptions

mining methods, minimum mining
dimensions and internal (or, if
Surface Deposits will be mined by
conventional open pit methods.
applicable, external) mining dilution. It is No dilution has been built into the resource
always necessary as part of the process
model.
of determining reasonable prospects for
eventual economic extraction to
consider potential mining methods, but
the assumptions made regarding mining
methods and parameters when
estimating Mineral Resources may not
always be rigorous. Where this is the
case, this should be reported with an
explanation of the basis of the mining
assumptions made.
Metallurgical
The basis for assumptions or predictions

No assumptions have been made about
factors or
assumptions

regarding metallurgical amenability. It is
always necessary as part of the process

metallurgical factors.
The oxide ores at Youanmi are essentially free
of determining reasonable prospects for milling, with historic oxide plant performance
eventual economic extraction to via the conventional CIP circuit demonstrating
consider potential metallurgical an average gold recovery of 89.4% over the
methods, but the assumptions regarding
seven years of operation.
metallurgical treatment processes and The Youanmi sulphide ores are partially
parameters made when reporting refractory in nature, requiring sulphide flotation
Mineral Resources may not always be and biological oxidation prior to conventional
rigorous. Where this is the case, this cyanide leaching and gold extraction.
should be reported with an explanation Production records relating to the sulphide
of the basis of the metallurgical processing circuit demonstrate an average
assumptions made. gold recovery of 87% over the four years of
operation.
Environment Assumptions made regarding possible The Youanmi Near Surface Deposits are
al factors or
assumptions

waste and process residue disposal
options. It is always necessary as part of

located in an area of considerable open pit and
underground mining activity and, as such,
the process of determining reasonable there are considered to be no significant
prospects for eventual economic environmental issues.
extraction to consider the potential
environmental impacts of the mining and
processing operation. While at this stage
the determination of potential
environmental impacts, particularly for a
greenfields project, may not always be
well advanced, the status of early
consideration of these potential
environmental impacts should be
reported. Where these aspects have not
been considered this should be reported

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Criteria JORC Code explanation Commentary
with an explanation of the environmental
assumptions made.
Bulk density Whether assumed or determined. If GMA carried out determinations of in-situ bulk
assumed, the basis for the assumptions.
densities on drill core using the weight in
If determined, the method used, whether
water/weight in air method for fresh core.
wet or dry, the frequency of the The spacing and distribution of data is such
measurements, the nature, size and that it was not deemed possible to accurately
representativeness of the samples. sub-domain and interpolate into areas of
The bulk density for bulk material must differing bulk density values.
have been measured by methods that Surfaces have been generated to represent
adequately account for void spaces base of oxide (30m below and parallel to
(vugs, porosity, etc), moisture and surface) and base of saprolite/top of fresh
differences between rock and alteration (70m below and parallel to surface for most
zones within the deposit. deposits and 85m below for Grace).
Discuss assumptions for bulk density The following bulk densities have been
estimates used in the evaluation assigned to these domains in the main
process of the different materials. Youanmi area:

Oxide 2.2 t/m3

Transition 2.6 t/m3

Fresh 2.8 t/m3
In the Currans Find deposits the following bulk
densities have been assigned:

Oxide 2.0 t/m3

Transition 2.2 t/m3

Fresh 2.6 t/m3
Classificatio The basis for the classification of the The Mineral Resource has been classified in
n Mineral Resources into varying the Indicated and Inferred categories, in
confidence categories. accordance with the 2012 Australasian Code
Whether appropriate account has been for Reporting of Mineral Resources and Ore
taken of all relevant factors (ie relative Reserves (JORC Code). A range of criteria
confidence in tonnage/grade has been considered in determining this
estimations, reliability of input data, classification including:
confidence in continuity of geology and
Geological and grade continuity
metal values, quality, quantity and
Data quality.
distribution of the data).
Drill hole spacing.
Whether the result appropriately reflects
the Competent Person’s view of the
deposit.

Modelling technique and kriging output
parameters, including Kriging
Efficiency, search pass and number of
composites used.
The Competent Person is in agreement with
this classification of the resource.
Audits or The results of any audits or reviews of The resource estimate has not been externally
reviews Mineral Resource estimates. audited.
Discussion Where appropriate a statement of the The relative accuracy of the various resource
of relative
accuracy/
confidence
relative accuracy and confidence level in
the Mineral Resource estimate using an
approach or procedure deemed

estimates is reflected in the JORC resource
categories.
At the Indicated Resource classification level,
appropriate by the Competent Person. the resources represent local estimates that
For example, the application of can be used for further mining studies.
statistical or geostatistical procedures to Inferred Resources are considered global in
quantify the relative accuracy of the nature.
resource within stated confidence limits,
or, if such an approach is not deemed

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Criteria JORC Code explanation Commentary
appropriate, a qualitative discussion of
the factors that could affect the relative
accuracy and confidence of the
estimate.
The statement should specify whether it
relates to global or local estimates, and,
if local, state the relevant tonnages,
which should be relevant to technical
and economic evaluation.
Documentation should include
assumptions made and the procedures
used.
These statements of relative accuracy
and confidence of the estimate should
be compared with production data,
where available.

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Rox Resources Limited – Youanmi Deeps Mineral Resource Estimate – June 2021

JORC Code, 2012 Edition – Table 1

Section 1 Sampling Techniques and Data

Criteria JORC Code explanation Commentary Commentary Commentary Commentary Commentary
Sampling
techniques
Nature and quality of sampling (e.g. cut
channels, random chips, or specific specialised
industry standard measurement tools
appropriate to the minerals under
investigation, such as downhole gamma
sondes, or handheld XRF instruments, etc.).
These examples should not be taken as limiting
_the broad meaning of sampling. _
Sampling consisted of reverse circulation (RC) and half-core
NQ3 sized diamond samples.
Include reference to measures taken to ensure
sample representivity and the appropriate
calibration of any measurement tools or
systems used.
The entire RC and diamond (DD) drilling sample was
extracted prior to subsampling at surface next to the rig.
Diamond and RC field duplicates were taken on selected
samples to measure representativityof sample splits.
Aspects of the determination of mineralisation
that are Material to the Public Report. In cases
where ‘industry standard’ work has been done
this would be relatively simple (e.g. ‘reverse
circulation drilling was used to obtain 1 m
samples from which 3 kg was pulverised to
produce a 30 g charge for fire assay’). In other
cases more explanation may be required, such
as where there is coarse gold that has inherent
sampling problems. Unusual commodities or
mineralisation types (e.g. submarine nodules)
may warrant disclosure of detailed information
Industry sampling, preparation and assaying techniques have
been used to acquire the current dataset.
Sample preparation consisted of coarse crushing a maximum
of 3 kg of the submitted sample, pulverising to >85% passing
75 microns and homogenising the pulp. 50 g sample sizes
were chosen for analysis of gold, with fire assay fusion and
detection by atomic absorption spectrometry (AAS).
Drilling
techniques
Drill type (e.g. core, reverse circulation, open-
hole hammer, rotary air blast, auger, Bangka,
sonic, etc.) and details (e.g. core diameter,
triple or standard tube, depth of diamond tails,
face-sampling bit or other type, whether core is
oriented and if so, by what method, etc.).
The Youanmi drilling database has been built up over several
decades by several different operators. Only RC and DD holes
have been used in the resource estimate.
Then collar table summary is tabulated below.
Hole
Type
First Hole Last Hole Number of
records
Linear
metres
AC 6YMA0107 YUAC015 1,550 69,735.69
CC Tails1 Tails5 5 5
DD 85FWD0046 YUG281 726 132,958.1
RAB 4YMR0039 YWR0166 10,231 318,202.1
RC 4PWRC0104 YY0451 5,197 277,135.68
VAC YGV0001 YGV0035 35 248
Drill sample
recovery
Method of recording and assessing core and
chip sample recoveries and results assessed.
Sample recoveries were recorded by the field geologist in the
field during logging and sampling. Core recoveries where
available were calculated based on nominal run lengths
versus measured length of recovered core. 96% of the
recorded intervals have core recoveries > 80%.
Measures taken to maximise sample recovery
and ensure representative nature of the
samples.
Limited records relating to historical RC or diamond core
sample recoveries have been identified, however, where

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Criteria JORC Code explanation Commentary
described, sampling and recovery procedures are consistent
with standard Australian industrystandards.
Whether a relationship exists between sample
recovery and grade and whether sample bias
may have occurred due to preferential loss/gain
of fine/coarse material.
No relationship between sample recovery and grade has
been analysed.
Logging Whether core and chip samples have been
geologically and geotechnically logged to a
level of detail to support appropriate Mineral
Resource estimation, mining studies and
metallurgical studies.
All RC and DD drillholes were geologically logged to an
industry standard appropriate for the mineralisation present
at the project. DD core was photographed.
The Competent Person considers that the level of detail is
sufficient for the reportingof Mineral Resources.
Whether logging is qualitative or quantitative
in nature. Core (or costean, channel, etc.)
photography.
Lithological logging is qualitative in nature. Logged intervals
were compared to the quantitative geochemical analyses
and geophysical logging to validate the logging.
The Competent Person considers that the availability of
qualitative logging has appropriately informed the geological
modelling, including mineralisation, weathering and
oxidation, water table level and rock type.
The total length and percentage of the relevant
intersections logged.
The total length of all drilling was geologically logged.
Subsampling
techniques and
sample
preparation
If core, whether cut or sawn and whether
quarter, half or all core taken.
Mineralised intercepts from diamond drillcore were cut using
a diamond saw into half-core and sampled on either a 1m
basis or overgeological intervals to a maximum of 1m.
If non-core, whether riffled, tube sampled,
rotary split, etc. and whether sampled wet or
dry.
RC samples were collected every metre via a cyclone into a
plastic bag prior to splitting with a riffle splitter. A 1.5-3kg
sample split was collected into a calico bag for laboratory
submission. In some cases, composite samples of up to 5m
were collected via spear sampling.
Anomalous composite samples were usually re-assayed at 1m
intervals where composite assays were greater than 50ppb,
80ppb or 250ppb dependingon theprogram.
For all sample types, the nature, quality and
appropriateness of the sample preparation
technique.
Sample preparation consisted of drying, riffle splitting
samples >3 kg, coarse crushing, pulverising to >85% passing
75 microns and homogenising the pulp. The Competent
Person considers these methods appropriate for this style of
mineralisation.
Quality control procedures adopted for all
subsampling stages to maximise representivity
of samples.
Rox have used 14 different Certified Reference Materials
(CRMs), covering a range of Au values, as well as blanks.
Campaign-based analysis and reporting of quality control
data was undertaken of blanks, field duplicates, and CRMs.
Measures taken to ensure that the sampling is
representative of the in-situ material collected,
including for instance results for field
duplicate/second-half sampling.
Limited field duplicate data is available, for post-mining
drilling. The precision of the field duplicates is moderate,
with 10% of sample pairs having an Average mean difference
of >30%; no bias between the paired samples was noted. The
precision is accounted for in the variography.
Whether sample sizes are appropriate to the
grain size of the material being sampled.
Sample sizes are considered to be appropriate to the grain
size of the material beingsampled.
Quality of assay
data and
laboratory tests
The nature, quality and appropriateness of the
assaying and laboratory procedures used and
All samples were assayed by Fire Assay or Aqua Regia digest.
Both of these are total methods. The range of methods is
tabulated below.

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Criteria JORC Code explanation Commentary Commentary Commentary Commentary
whether the technique is considered partial or
total.
Company Type Laboratory Method
Eastmet /
GMA
Surface
drillholes
Metana Lab
Perth
30g or 50g Fire
Assay, or AquaRegia
AAS* with re-assay
via Fire Assay on
samples returning
preliminary results
>1g/t.
Some early
surface
drillholes
Australian Assay
Laboratories
Group
50g Fire Assay, AAS*
finish.
Underground
drillholes)
Analabs Pty Ltd 50g Fire Assay, AAS*
finish.
Early surface
drillholes and
some of
underground
drillholes
Youanmi Mine
Laboratory
50g Fire Assay, AAS
finish.
Aqua Regia – AAS
.
Aquila Genalysis, Perth Fire Assay, AAS*
Finish
Goldcrest Genalysis, Perth Composite RC
samples using Aqua
Regia digest and
single metre RC and
core samples using
Fire Assay, AAS*
finish
For geophysical tools, spectrometers, handheld
XRF instruments, etc., the parameters used in
determining the analysis including instrument
make and model, reading times, calibrations
factors applied and their derivation, etc.
na
Nature of quality control procedures adopted
(e.g. standards, blanks, duplicates, external
laboratory checks) and whether acceptable
levels of accuracy (i.e. lack of bias) and
precision have been established.
Historical assay quality control measures are largely unknown.
Regular duplicates with satisfactory results were reported
from some programmes. The Metana (bulk of historical
samples)
laboratory
appears
to
have
systematically
undertaken a 10% duplicate fire assay analysis. No system of
submission of standard reference material and blank samples
is believed to have been in place at the time of this drilling, in
line with local industry practice at that time
Goldcrest took field duplicates, standards and blanks on an
approximate 1 in 20 basis (5%) and all Goldcrest drill samples
were submitted for assay. Goldcrest twin drilling in shallower
areas has verified the drill results of previous explorers.
Historical quality assurance and quality control data relating
to the remaining resources is either no longer available or is
inconsistently reported. Given the long time period over
which the data was generated it was not possible to
independentlyverifythequalityof the data.t
Verification of
sampling and
assaying
The verification of significant intersections by
either independent or alternative company
personnel.
Intersections selected by Rox were reviewed by the
Competent person and considered appropriate for the
Mineral Resource estimate.
The use of twinned holes. There are no twinned holes in the resource area.
Documentation of primary data, data entry
procedures, data verification, data storage
(physical and electronic) protocols.
The data entry, storage and documentation of primary data
was completed on Microsoft Excel spreadsheets and local
hard drives, then imported into a central database.

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Criteria JORC Code explanation Commentary
Discuss any adjustment to assay data. No adjustments or calibrations have been made to any assay
data.
Location of data
points
Accuracy and quality of surveys used to locate
drillholes (collar and downhole surveys),
trenches, mine workings and other locations
used in Mineral Resource estimation.
Recent drillholes (Goldcrest, Rox) have been surveyed using
differential GPS tools. Older holes (largely Eastmet or GMA)
do not have records of the survey methods, although typically
these are expected to be by total station tools.
Approximately 90% of drillholes longer than 100m have been
down-hole surveyed, mainly with gyroscopic tools; a minority
of older holes were surveyed with multi-shot or single-shot
tools. Drillholes less than 100 m long typically show a minor
degree of downhole deviation
Specification of the grid system used. Topographic data were captured in GDA94 MGA Zone 50 grid
system.
Quality and adequacy of topographic control. A topographic surface was built from end of month pickups
of pits, dumps, infrastructure and surfaces by the mine
survey team. The Competent Person considers that the
surface is suitable for this MRE.
Data spacing
and distribution
Data spacing for reporting of Exploration
Results.
Average drill hole density is highly variable, ranging from
10m x 10m to 160m x 160m, and generally decreasing with
depth.
Whether the data spacing and distribution is
sufficient to establish the degree of geological
and grade continuity appropriate for the
Mineral Resource and Ore Reserve estimation
procedure(s) and classifications applied.
The Competent Person believes the mineralised lenses have
sufficient geological and grade continuity to support the
classification applied to the Mineral Resources given the
current drill pattern.
Whether sample compositing has been applied. Assay samples were composited to a single datapoint at the
centre of each mineralised lode intersection.
Orientation of
data in relation
to geological
structure
Whether the orientation of sampling achieves
unbiased sampling of possible structures and
the extent to which this is known, considering
the deposit type.
No grade effect of the relationship between sample direction
and mineralised structures has been identified.
If the relationship between the drilling
orientation and the orientation of key
mineralised structures is considered to have
introduced a sampling bias, this should be
assessed and reported if material.
No relationship has been noted between drillhole dip angle
and mineralisation.
Sample security The measures taken to ensure sample security. No details are available on the historic sample security
measures.
Audits or
reviews
The results of any audits or reviews of sampling
techniques and data.
No external audit of sampling techniques and data has been
undertaken.

Section 2: Reporting of Exploration Results

Criteria JORC Code explanation Commentary
Mineral
tenement and
land tenure
status
Type, reference name/number, location and
ownership including agreements or material
issues with third parties such as joint ventures,
partnerships, overriding royalties, native title
interests, historical sites, wilderness or national
park and environmental settings.
The Youanmi mining centre is covered by a Joint Venture
agreement with Venus Metals Corporation Limited known as
the ‘OYG JV’. This comprises ten granted Mining Leases, with
a beneficial interest of Rox 70% and Venus 30%. The leases
are M57/51, M57/75, M57/97, M57/109, M57/135,
M57/160A, M57/164, M57/165, M57/166 and M57/167

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ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

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Criteria JORC Code explanation Commentary
The security of the tenure held at the time of
reporting along with any known impediments to
obtaining a licence to operate in the area.
There are no impediments preventing the operation of the
lease.
Exploration
done by other
parties
Acknowledgment and appraisal of exploration
by other parties.
Gold was first discovered at Golden Crown, just to the south
of Youanmi in 1894. Some ore from the area was carted to
the government battery at Mount Magnet for treatment.
Further prospecting led to the discovery of further deposits
in 1905, and production commenced from the United and
Hill End mines. The Main Lode was discovered in 1908, and
the townsite of Youanmi was gazetted in 1910.
Youanmi Gold Mine Limited was floated in 1911 and
commenced operations based on the Main Lode. Further
discoveries led to the development of the Pollard Lodes and
Currans to the south, where a small treatment battery was
established.
The mine struggled during World War One with a shortage of
labour and high costs, and finally closed in 1922. It employed
around 100 men.
In 1934, the Youanmi Gold Mining Limited was floated in
London with the intention of restarting underground mining.
Production started in August 1936 and continued until 1942,
when a shortage of skilled labour due to World War II,
resulted in a second closure. About 200 men were employed
in this phase. The maximum vertical depth reached by the
workings was about 300m below the natural surface; the
average stope width was 1.5m. After 1942 the townsite was
abandoned; the only remaining infrastructure is the town
cemetery.
Eastmet Limited, an 80% owned subsidiary of Metana
Minerals NL, entered into a JV agreement with Tantalex Ltd
and Franmere Holdings Pty Ltd to earn 50% of a group of
tenements at Youanmi. Open mining began in October 1986
and the 600,000 tpa conventional Carbon-In-Pulp plant was
commissioned on 31 December 1986, by which time Eastmet
had acquired the remaining 50% of the project. The original
tenements covered the Main, Hill End, and Western Laterite
open pits; additional tenements acquired covered the United
North, Kathleen, Rebel-Kurrajong and Bunker open pits and
the unmined Commonwealth and Connemara resources.
Ore and waste were mined on 2.5m flitches by backhoe
excavators and hauled by 50t offroad dump trucks.
Exploration and development drilling was completed on a
320m by 10m grid, with the holes inclined -60 to the east and
sampled at 1m intervals. Grade control during mining used
Ditchwitch trenches cut from west to east spaced 5m apart
and sampled at 1m intervals along the trench. Additional RC
drilling was used in new areas and at the transition from
oxide to fresh ore.
After completion of the Main Lode pit in 1989, satellite pits
were mined including the high-grade Penny West pit, 28 km
to the south. The maximum production rate was 187,000
tonnesperquarter. Thepeakquarterly goldproduction was

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Criteria JORC Code explanation Commentary
37,900 oz in September 1991. The plant ceased treatment in
October 1992 and mill cleanup continued into January 1993.
Between 1990 and 1993 Eastmet completed a programme of
deep diamond drilling to test the extensions of Main Lode to
a maximum of 750m vertical depth. Gold Mines of Australia
Limited (GMA) was created in 1993 when Eastmet, Metana
and Paragon Resources NL were merged. In October 1993,
the GMA board approved development of the Youanmi
Deeps underground mine. The ore was processed through a
new 220 ktpa flotation and bacterial oxidation circuit,
however the operation ultimately failed to achieve
production targets, and the underground mine was closed in
November 1997.
Geology Deposit type, geological setting and style of
mineralisation.
The Youanmi gold deposits are hosted in the Youanmi
Terrane.
They were formed where a N-striking sequence of high-Fe
tholeiitic mafic rocks and BIFs intersects a NNW-striking,
variably WSW-dipping high-strain zone interpreted to be a
sinistral-normal shear system.
The foliation is axial planar to a S-plunging isoclinal synform.
Mined deposits lie at various positions on this structure:

Western limb: Bunker, United North (E-dipping
stratigraphy)

Hinge: Rebel, Kathleen (S-dipping stratigraphy)

Eastern limb: Hill End, Main Pit (W-dipping
stratigraphy)
The east limb of the folded mafic sequence is stoped out by
the irregular intrusive contact of a large monzogranite
intrusion. The exposed monzogranite-mafic contact has low
strain, suggesting the intrusion of the monzogranite is late in
the folding and formation of the foliation.
Interflow sediments are altered chlorite-quartz-magnetite
rocks up to several metres thick. These sediments have
focussed much of the strain and frequently host auriferous
shears.
The mafics and monzogranite are intruded by intermediate
porphyry bodies with complex geometric and timing
characteristics.
Gold mineralisation and alteration are localised in N- to
NNW-striking, and moderately to steeply W-dipping
anastomosing shear zones 1m to 20 m thick, averaging 3 to
4m. The mineralogy of the shear zones is sericite-quartz
mylonites with abundant sulphides, chlorite and carbonate,
with accessory biotite, rutile and apatite. The gold occurs
within the pyrite and arsenopyrite, which may be up to 15%
of the volume of the mylonite. They are interpreted to have
formed relatively late in the geological history of the area, as
they crosscut the foliation and the monzogranite.
A lesser mineralisation style is quartz vein stockwork lodes
within the monzogranite. These trend NNE and are the brittle
equivalent of the ductile shear zones in the mafic. The quartz
veins are usuallysteeplydippingand a few centimetres wide,

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ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

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Criteria JORC Code explanation Commentary
with very high grades; coarse visible gold has been noted in
drilling in the Grace prospect.
Weathering has reached more than 80m below the natural
surface. Previous open pit mining was almost entirely within
the oxide zone.
Drillhole
information
A summary of all information material to the
understanding of the exploration results
including a tabulation of the following
information for all Material drillholes:
Easting and northing of the drillhole collar
Elevation or RL (Reduced Level – elevation
above sea level in metres) of the drillhole
collar
Dip and azimuth of the hole
Downhole length and interception depth
Hole length.
Exploration Results are not being reported.
Exploration Results are not being reported.
Exploration Results are not being reported.
Exploration Results are not being reported.
Exploration Results are not being reported.
If the exclusion of this information is justified on
the basis that the information is not Material
and this exclusion does not detract from the
understanding of the report, the Competent
Person should clearly explain why this is the
case.
Data
aggregation
methods
In reporting Exploration Results, weighting
averaging techniques, maximum and/or
minimum grade truncations (e.g. cutting of high
grades) and cut-off grades are usually Material
and should be stated.
Where aggregate intercepts incorporate short
lengths of high grade results and longer lengths
of low grade results, the procedure used for such
aggregation should be stated and some typical
examples of such aggregations should be shown
in detail.
The assumptions used for any reporting of metal
equivalent values should be clearly stated.
Relationship
between
mineralisation
widths and
intercept
lengths
These relationships are particularly important in
the reporting of Exploration Results.
The mineralisation lodes dip at 45° to 60° to the northwest.
Surface drillholes were angled at 60° to 70° and with an
azimuth perpendicular to the lodes strike to provide as near
a true. intercept thickness as realistically possibly.
Underground drillholes were drilled in fans at a limited
number of drill locations; their intersections are highly
variable with respect to true widths.
If the geometry of the mineralisation with
respect to the drillhole angle is known, its nature
should be reported.
Exploration Results are not being reported.
Exploration Results are not being reported.
If it is not known and only the downhole lengths
are reported, there should be a clear statement
to this effect (e.g. ‘downhole length, true width
_not known’). _
Diagrams Appropriate maps and sections (with scales) and
tabulations of intercepts should be included for
Relevant maps and diagrams are included in the body of
this announcement.

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ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005

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+61 8 9226 0044

Criteria JORC Code explanation Commentary
any significant discovery being reported These
should include, but not be limited to a plan view
of drillhole collar locations and appropriate
sectional views.
Balanced
reporting
Where comprehensive reporting of all
Exploration Results is not practicable,
representative reporting of both low and high
grades and/or widths should be practiced to
avoid misleading reporting of Exploration
Results.
Exploration Results are not being reported.
Other
substantive
exploration data
Other exploration data, if meaningful and
material, should be reported including (but not
limited to): geological observations; geophysical
survey results; geochemical survey results; bulk
samples – size and method of treatment;
metallurgical test results; bulk density,
groundwater, geotechnical and rock
characteristics; potential deleterious or
contaminating substances.
na
Further work The nature and scale of planned further work
(e.g. tests for lateral extensions or depth
extensions or large-scale step-out drilling).

Digitisation of underground sampling data to
improve the understanding of the short-scale
grade structure of the deposit.

Digitisation of the limited historic underground
mapping

Cutting of unsampled historic core to add
additional intersections to the interpretation.

Investigate the use of the historic stope pickups to
refine the interpretation locally.
Diagrams clearly highlighting the areas of
possible extensions, including the main
geological interpretations and future drilling
areas, provided this information is not
commercially sensitive.
Relevant maps and diagrams are included in the body of
this report.

Section 3: Estimation and Reporting of Mineral Resources

Criteria JORC Code explanation Commentary
Database
integrity
Measures taken to ensure that
data has not been corrupted
by, for example, transcription
or keying errors, between its
initial collection and its use for
Mineral Resource estimation
purposes.
The database is maintained by external service provider Geobase using the
Azeva.XDB Database Management System.
The database is stored using the Microsoft’s SQL Server 2019 database engine
on a Secure Network server running the latest SBS Administrative access to the
database is restricted to Geobase Personnel only who have been trained in
database management.
All appropriate and valid changes requested from site are made only by Geobase.
Site personnel do not have the ability to edit the database, which allows the
integrity of the data to be maintained.
Geobase generates a backup of the database and associated data on a regular
basis.
The database is configured to store assay quality control measures undertaken
on the assaying.
Historical data validation and data merging is undertaken using Azeva.X software
and a number of additional third-partysoftware suites.

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Criteria JORC Code explanation Commentary
Data validation procedures
used.
The data is subject to several validation procedures including code, multi-table
and spatial. The database contains validation scripts which prevent non-
standard character codes being used and checks numeric values against a
minimum and maximum range.
Historic codes have been made consistent with the new standardized coding
system.
Multi table validations have been conducted on all drill hole tables.
All field generated data is checked for validity and completeness by Rox staff
prior to being supplied to Geobase for compilation, additional validation and
loading into the database.
The Competent Person found no material errors and deemed the database was
fit for thepurpose of Mineral Resource estimation.
Site visits Comment on any site visits
undertaken by the Competent
Person and the outcome of
those visits.
The Competent Person visited the site from the 2ndto 4thof June 2021, and
inspected open pits, geological exposures, diamond core, RC drilling, core and
sample handling facilities, historic plans and sections and site infrastructure, as
well as havingdiscussions with Rox staff.
If no site visits have been
undertaken, indicate why this
is the case.
na
Geological
interpretation
Confidence in (or conversely,
the uncertainty of) the
geological interpretation of
the mineral deposit.
The interpretation is based on the resource drilling dataset, and a selection of
intervals based on geology and assay data. This interpretation is supported by
the long history of open pit and underground mining. Uncertainties will arise
from thequantityand distribution of data.
Nature of the data used and of
any assumptions made.
No material assumptions have been made which affect the Mineral Resource
reported herein.
The effect, if any, of
alternative interpretations on
Mineral Resource estimation.
Uncertainties in the interpretations are due to the wide spacing of some of the
drilling data. The interpretations are consonant with the previously mined
stopes and are not likely to be materially deficient.
The use of geology in guiding
and controlling Mineral
Resource estimation. The
factors affecting continuity
both of grade and geology.
Modelling used the Interval Selection function in Leapfrog Geo software. No
minimum or maximum thickness parameters were used, and lodes generally
cross-cut, except against the Main Lode Shear, where there is evidence of
truncation of minor structures.
Merged tables were created in Leapfrog Geo, combining lithology and assay
tables. The lode intersections were interpreted based on several characteristics,
such as grade, shearing, degree of mylonitisation, veining, sulphide content, or
alteration and bleaching. Intervals were generally selected using the assay
tables, verified using core photographs and logging, except where historic core
was unsampled, in which case lithology tables were used.
Pinch-outs were applied manually around the peripheries and at roughly half of
the average data-spacing, up to 40m. Drill intercepts were snapped to exactly.
Core photography was utilised where available, for historic core, to determine
hangingwall and footwall contacts, as well as to validate historic logging.
Geological contacts were snapped to, with priority, over grade contacts, as some
lower grade disseminated gold tends to be found outside of the visible shear
contacts. So, in these cases the visible contacts were treated as hard boundaries.
Dimensions The extent and variability of
the Mineral Resource
expressed as length (along
strike or otherwise), plan
width, and depth below
Twenty-three mineralised lodes have been modelled, along 1.6 km of strike
length, comprising the Main Lode and associated footwall and hangingwall lodes
along the main trend corridor. The maximum depth of the main Lode
interpretation is to approximately -600mRL, 1150m below the natural surface.
The main lode is continuous down the dip for this length; other lodes have much
more restricted down-dipextents.

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Criteria JORC Code explanation Commentary
surface to the upper and lower
limits of the Mineral Resource.
The hangingwall and footwall lodes are predominantly 0.5m-2m thick, while the
Main Lode isgenerallyon the order of 1m-3m thick, but locallyexceeds 10m.
Estimation
and modelling
techniques
The nature and
appropriateness of the
estimation technique(s)
applied and key assumptions,
including treatment of
extreme grade values,
domaining, interpolation
parameters and maximum
distance of extrapolation from
data points. If a computer
assisted estimation method
was chosen, include a
description of computer
software and parameters used
Given the high level of short-scale variability in the original sample assay dataset,
and the relative thinness of the interpreted lodes, it was decided to adopt a
grade-thickness approach to estimate the resource. In this method, a single
downhole composite is extracted for each drillhole intersection of the lode. The
metal accumulation is calculated as the product of the average grade and the
thickness; this new variable is called the ‘grade-thickness’.
The estimation process is to estimate both the grade-thickness and the
intersection thickness using Ordinary Kriging; the block grade is calculated by
dividing the grade-thickness by the estimated thickness (which is not the same
as the actual physical thickness of the wireframe interpretation).
To subset the lode interpretations into the higher-grade shoots, a statistical
approach was adopted, using Leapfrog to model the grade-thickness variable.
The workflow was:

A structural trend for each domain was created out of the hangingwall
surface of the Leapfrog lode interpretations.

The grade-thickness composites were loaded as single points.

Leapfrog shells of the grade-thickness were created at a range of
cutoffs, using a relatively high degree of smoothing, with a spherical
structure with 50% nugget and a 50 m range. The shell used the
structural trends described above and were essentially unconstrained
in the across-strike direction.

The Leapfrog shells were inspected, and the high-grade shell chosen
for each domain was chosen based on the minimum needed to give a
reasonable continuity.

The Leapfrog shells were then intersected with the original Leapfrog
lode interpretations to create the high-grade shoots within the lodes.

The high-grade shoot models were manually edited to remove
anomalous artefacts, as well as small volume, single intersection
shapes.
The grade-thickness composite dataset was then constrained to those points
inside the high grade shoot models.
Statistics and variography, were undertaken in Supervisor software, and
composite selection and block coding, undertaken in Surpac software, used the
domains as hard boundaries.
Quantitative Kriging Neighbourhood Analysis was undertaken using Supervisor
software to assess the effect of changing key kriging neighbourhood parameters
on block estimates. Kriging Efficiency and Slope of Regression were determined
for a range of block sizes, minimum and maximum samples, search dimensions
and discretisation grids.
Grade interpolation for gold grade-thickness and nominal thickness and sulphur
was completed using ordinary kriging into the parent block cells.
Estimation parameters are tabulated below; for some of the smaller and less well
sampled domains the search ranges and/or minimum number of composites
were varied to ensure all blocks were estimated; these domains are all classified
Inferred.
Grade Thickness
Thickness
Minimumcomposites
8
8
Maximumcomposites
16
16
RotationaboutZ
34
34

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Criteria JORC Code explanation Commentary Commentary Commentary Commentary Commentary Commentary Commentary Commentary Commentary Commentary Commentary
RotationaboutX 54 54
RotationaboutY 31 31
Majorsearchdistance 275m 275m
Semi-majorsearchdistance 275m 275m
Minorsearchdistance 137.5m 137.5m
Variogramtype Nested Spherical Nested Spherical
C0 0.16 0.05
C1 0.51 0.24
A1Majordirection 6m 40m
A1Semi-majordirection 6m 40m
A1Minordirection 6m 40m
C2 0.33 0.71
A2Majordirection 70m 100m
A2 Semi-majordirection 30m 100m
A2Minor direction 30m 100m
The availability of check
estimates, previous estimates
and/or mine production
records and whether the
Mineral Resource estimate
takes appropriate account of
such data.
The current resou
estimates.
The project has b
of about 90 years
rce has been compared to both t
een mined by both underground
. Previous production recorded fr
Years Tonnes
Milled
Head
Grade
Recovered
Grade
Recovery Au produced
(oz)
1908 to 1921 339,000 15.2 166,000
1937 to 1942 365,000 8.1 95,000
Other 46,000 10.2 15,000
1987 to
19931
2,665,535 3.43 3.07 89.4% 262,717
1995 to 1997 411,858 11.36 9.69 85.3% 128,278
3,827,393 5.42 666,995
1.
Includ
Two previous reso
cutoff:
Creator Date Indicated Inferred
Tonnes Au
g/t
Au oz Tonnes Au
g/t
Au oz
Ravensgate 2006 808,400 8.1 210,200 1,605,100 8.7 447,700
Ravensgate 2002 742,700 7.8 185,600 752,000 9.8 237,500
The assumptions made
regarding recovery of by-
products.
na
Estimation of deleterious
elements or other non-grade
variables of economic
significance (e.g. sulphur for
acid mine drainage
_characterisation). _
No deleterious or non-grade elements have been estimated.
In the case of block model
interpolation, the block size in
relation to the average sample
spacing and the search
employed.
The dimensions of the parent block used for estimation represents in 10mY by
5m X by 5mZ, with subcelling in X and Z to 1.25m; the blocks are rotated into
the strike direction. The maximum search distance for estimation used was
300m; the drillhole spacing is highly variable, typically 80m for surface diamond
drilling.
Any assumptions behind
modelling of selective mining
units.
na
Any assumptions about
correlation between variables
No assumptions have been made regarding the correlation of variables.

ASX CODE: RXL

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Criteria JORC Code explanation Commentary
Description of how the
geological interpretation was
used to control the resource
estimates.
Logged geology, alteration and structural controls were used in the
interpretation of lodes within the resource model. Hard boundaries were used
for estimation between mineralised domains.
Discussion of basis for using or
not using grade cutting or
capping.
No high-grade cuts were applied; the grade-thickness process de-skews the
data, and an inspection of the log-probability plots and histograms did not
demonstrate a significant high-grade tail to the distributions of the well-
sampled domains.
The process of validation, the
checking process used, the
comparison of model data to
drillhole data, and use of
reconciliation data if available.
Standard model validation was completed using numerical methods and
validated visually in section and 3D against the input raw drillhole data,
composites, and blocks.
The comparison of input and estimate values is tabulated below.
Domain
Grade
Grade-thickness
Thickness
Composites
Estimate
Composites
Estimate
Composites
Estimate
1000
7.84
8.17
30.33
30.80
4.00
4.26
1100
6.28
8.01
10.79
11.48
1.75
1.71
1101
4.68
4.92
11.76
11.11
2.44
2.64
1102
7.13
7.60
18.47
14.84
2.18
2.03
1103
6.52
9.07
20.71
21.14
2.68
2.46
1104
9.38
8.81
13.30
12.17
1.38
1.42
1105
10.68
10.69
15.74
16.01
1.50
1.54
1106
4.37
4.21
6.62
6.32
1.47
1.53
1107
1.76
1.44
1.61
1.58
1.02
1.15
1108
4.77
6.43
11.87
15.03
1.89
2.49
1109
1.89
2.25
2.41
2.51
1.12
1.10
1110
1.50
1.35
1.78
1.84
1.29
1.43
1111
2.77
2.98
5.53
5.28
1.78
1.79
1112
4.65
5.55
7.19
6.54
1.15
1.19
1201
3.81
4.67
13.62
13.69
2.49
2.90
1202
3.41
3.36
9.22
9.73
2.65
3.61
1203
4.61
4.09
6.44
6.51
1.31
1.66
1204
3.57
3.23
4.12
4.52
1.67
1.58
1205
3.53
4.12
3.70
3.77
0.96
0.94
1207
6.72
6.30
13.19
13.39
2.02
2.21
1208
4.13
3.10
2.81
2.85
0.95
0.95
1209
1.98
1.59
2.35
2.52
1.31
1.56
Moisture Whether the tonnages are
estimated on a dry basis or
with natural moisture, and the
method of determination of
the moisture content.
Tonnages have been estimated on a dry basis.
Cut-off
parameters
The basis of the adopted cut-
off grade(s) or quality
parameters applied.
The Mineral Resources were reported at a 3 g/t and 4 g/t cutoff. 4 g/t was the
cutoff previously reported by Ravensgate (2006); 3 g/t is based on preliminary
assessment of the costs of underground mining at the current (2021) gold
price.
Mining factors
or
assumptions
Assumptions made regarding
possible mining methods,
minimum mining dimensions
and internal (or, if applicable,
external) mining dilution. It is
always necessary as part of
the process of determining
reasonable prospects for
eventual economic extraction
to consider potential mining
methods, but the assumptions
made regarding mining
methods andparameters
Due to the depth, and the previously developed underground mine, the
resource is considered suitable for underground mining by long hole open
stoping. Previously mined areas may be accessible by the use of cemented fill.
No detailed mining assumptions have been made and no external dilution has
been added to the resource.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

39

[email protected] www.roxresources.com.au

Criteria JORC Code explanation Commentary
when estimating Mineral
Resources may not always be
rigorous. Where this is the
case, this should be reported
with an explanation of the
basis of the mining
assumptions made.
Metallurgical
factors or
assumptions
The basis for assumptions or
predictions regarding
metallurgical amenability. It is
always necessary as part of
the process of determining
reasonable prospects for
eventual economic extraction
to consider potential
metallurgical methods, but the
assumptions regarding
metallurgical treatment
processes and parameters
made when reporting Mineral
Resources may not always be
rigorous. Where this is the
case, this should be reported
with an explanation of the
basis of the metallurgical
assumptions made.
A 120 tpd bacterial oxidation circuit was commissioned in September 1994 to
treat sulphide concentrates, using the BacTech process. BacTech uses a
moderately thermophilic culture with an optimum growth temperature of 45C.
A pilot plant trial from October 1993 to July 1994 tested three bulk samples of
concentrate. After bacterial oxidation, recoveries up to 99% were achieved.
The performance between 1995 and 1997 of the flotation and bacterial oxidation
circuit was generally lower than budgeted due almost entirely to below budget
ore deliveries. Although the plant rarely achieved its full capability, it consistently
exceeded the projected metallurgical recovery of 81%, with an average recovery
of 87.5%.
Blending of ore was not anticipated prior to commissioning and feed variability
created significant problems for both the flotation and bacterial oxidation
circuits.
Operating performance history demonstrates a steadily increasing recovery,
with initial commissioning values of 85% increasing rapidly to a maximum of
92.4% in 1994-95. This is indicative of improving metallurgical control and
diminishing amounts of reactive sulphide from transitional zones. Based on
historical operating data, one of the most significant factors affecting both
throughput and recovery was mechanical and equipment failures within the bio-
oxidation circuit.
Environmental
factors or
assumptions
Assumptions made regarding
possible waste and process
residue disposal options. It is
always necessary as part of
the process of determining
reasonable prospects for
eventual economic extraction
to consider the potential
environmental impacts of the
mining and processing
operation. While at this stage
the determination of potential
environmental impacts,
particularly for a greenfields
project, may not always be
well advanced, the status of
early consideration of these
potential environmental
impacts should be reported.
Where these aspects have not
been considered, this should
be reported with an
explanation of the
environmental assumptions
made.
No assumptions regarding possible waste and process residue disposal options
have been made. Youanmi is a previously mined site, with historic waste dumps
and tailings dams.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

40

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Criteria JORC Code explanation Commentary
Bulk density Whether assumed or
determined. If assumed, the
basis for the assumptions. If
determined, the method used,
whether wet or dry, the
frequency of the
measurements, the nature,
size and representativeness of
the samples.
Bulk density data is predominantly derived from some standard Specific Gravity
(SG) immersion measurements carried out between 1989 and 1992. Within the
interpreted mineralised lodes, the mean density of the samples was 2.96tm-3.
It was not deemed possible to subdomain this dataset into areas of differing bulk
density values. A single value of 2.9tm-3was assigned to the fresh lode material
throughout the deposit.
The bulk density for bulk
material must have been
measured by methods that
adequately account for void
spaces (vugs, porosity, etc.),
moisture and differences
between rock and alteration
zones within the deposit.
The water immersion method measurements were determined by measuring
the weight of part or the entire sample in air and water and then applying the
formula bulk density = weight_air/(weight_air-weight_water).
Discuss assumptions for bulk
density estimates used in the
evaluation process of the
different materials.
na
Classification The basis for the classification
of the Mineral Resources into
varying confidence categories.
The Mineral Resource was classified as Indicated or Inferred based on the level
of geological understanding of the mineralisation and the drillhole spacing.
Whether appropriate account
has been taken of all relevant
factors (i.e. relative confidence
in tonnage/grade estimations,
reliability of input data,
confidence in continuity of
geology and metal values,
quality, quantity and
_distribution of the data). _
The classification reflects the overall level of confidence in mineralised domain
continuity based the mineralisation drill sample data numbers, spacing and
orientation.
Whether the result
appropriately reflects the
Competent Person’s view of
the deposit.
The Mineral Resource classifications applied appropriately reflect the view of
the Competent Person.
Audits or
reviews
The results of any audits or
reviews of Mineral Resource
estimates.
Internal audits were completed by CSA Global which verified the technical
inputs, methodology, parameters and results of the estimate.
Discussion of
relative
accuracy/
confidence
Where appropriate, a
statement of the relative
accuracy and confidence level
in the Mineral Resource
estimate using an approach or
procedure deemed
appropriate by the Competent
Person. For example, the
application of statistical or
geostatistical procedures to
quantify the relative accuracy
of the resource within stated
confidence limits, or, if such an
The accuracy of the Mineral Resource is communicated through the
classification assigned. The Mineral Resource been classified in accordance with
the JORC Code (2012 Edition) using a qualitative approach. All factors that have
been considered have been adequately communicated in Section 1 and
Section 3 of this table.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

41

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Criteria JORC Code explanation Commentary
approach is not deemed
appropriate, a qualitative
discussion of the factors that
could affect the relative
accuracy and confidence of the
estimate.
The statement should specify
whether it relates to global or
local estimates, and, if local,
state the relevant tonnages,
which should be relevant to
technical and economic
evaluation. Documentation
should include assumptions
made and the procedures
used.
The accuracy of the Mineral Resource is communicated through the Inferred or
Indicated classification assigned to the deposit. The Mineral Resource has been
classified in accordance with the JORC Code. All factors that have been
considered have been adequately communicated in Section 1, Section 2 and
Section 3 of this table.
The Mineral Resource Statement relates to a global estimate of in-situ tonnes
and grade.
These statements of relative
accuracy and confidence of the
estimate should be compared
with production data, where
available.
The depleted stopes and development from the 1995-1997 period produced
411kt @ 11.4 g/t. The current model in the same area has 413 kt@ 9.2 g/t.
Further analysis and modelling is required to understand the grade discrepancy
and refine the model.

ASX CODE: RXL

ROX RESOURCES LIMITED Level 2, 87 Colin Street, West Perth WA 6005 +61 8 9226 0044

42

[email protected] www.roxresources.com.au