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CASTLE MINERALS LIMITED Capital/Financing Update 2018

Feb 20, 2018

64635_rns_2018-02-20_c88fb18b-11d3-4e94-8bdd-82f5eb285058.pdf

Capital/Financing Update

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Beasley Creek Prospectivity Enhanced

  • Detailed mapping and interpretation confirms Mt Roe Basalt and Conglomerate to be considerably more extensive than expected

  • • Conglomerates mapped above, within and below Mt Roe Basalt with latter receiving most attention in broader Pilbara context

  • Four key prospect areas now identified along 16km unconformity surface

  • • Historical RC drilling (1998) intersected interpreted Hardey Conglomerate with best intercept of **4m at 11.4g/t Au from 20m (RRC15)

  • Target finessing planned next. To be followed by bulk sampling after licence grant


“The broader prospectivity at Beasley Creek has been considerably enhanced following the confirmation of several more kilometres of previously unrecognised Mt Roe Basalt and especially Mt Roe Conglomerate along the 16km unconformity” Castle Managing Director, Stephen Stone said.

“ The recovery of previously reported numerous small gold nuggets* proximal to the Mt Roe and Hardey conglomerates plus anomalous historical RC drilling intercepts in the Hardey conglomerate reinforce Beasley Creek as a credible and sizable target for conglomeratehosted gold mineralisation”.

*(Refer ASX release dated 20th December 2017 and included Table 1).

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ASX & Media Release ASX Code: CDT 21 February 2018

Suite 2 / 11 Ventnor Ave West Perth WA 6005 PO Box 437 West Perth WA 6872 Tel: +618 9322 7018 ACN 116 095 802

www.castleminerals.com [email protected] Registered Office: Suite 5 / 95 Hay Street Subiaco WA 6008

Capital Structure: Quoted Shares: 221.8M 3c Options: 6M Board:

Michael Atkins Chairman

Stephen Stone Managing Director

Ian Hobson Non-Executive Director and Company Secretary

**The historical drilling results referred to in this release were obtained by previous explorers. Information pertaining to the drilling, sampling and assaying techniques has been extracted from reports lodged in 1998 with Geological Survey of Western Australia (GSWA). Castle personnel have located and verified in the field the collar positions of the referred to holes. (Refer Appendix 1 and 2).

Page 1 of 14

Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Photo1: Mt Roe Conglomerate outcrop at Beasley West

Photo 2: Detectorist at alluvial workings overlying Hardey Conglomerate at Beasley Central

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Castle Minerals Limited (“Castle” or the Company) (ASX: CDT) advises that a recently completed analysis of detailed field mapping undertaken in late-December 2017 plus acquired historical data has considerably enhanced the prospectivity of its Beasley Creek Conglomerate-Hosted Gold Project, Pilbara Region, Western Australia.

In addition to the presence of Mt Roe Basalt, prospective Mt Roe Conglomerate has also now been identified outcropping and sub-outcropping more extensively than first thought over the 16km Beasley Creek unconformity with the underlying Old Archean rocks. The Mt Roe Conglomerate varies from very narrow up to 40m thick.

The unconformity was mapped in detail in December 2017 by Castle’s geologist in association with two metal detectorists who tested for nuggets in the vicinity of known gold workings and on a more reconnaissance basis at several other areas along the unconformity (Figures 1, 2 and 3 and Photos 1, 2, 3 and 4).

This and a number of other factors now confirm Beasley Creek as a credible and sizable target for conglomerate-hosted gold mineralisation.

These other factors are the previously reported recovery of numerous small nuggets from three separate areas that are proximal to the Mt Roe and Hardey conglomerates and recently retrieved historical reverse circulation (RC) drilling data where ‘in-situ’ gold mineralisation in the Hardey Conglomerate was intersected, with one hole returning *4m at 11.4g/t Au from 20m (Refer Appendix 1 and 2)(Refer ASX release dated 20th December 2017 and included Table 1).

The Mt Roe Basalt at Beasley Creek is believed to represent remnants of a more extensive sequence that flanked the locally prominent Rocklea Dome and which subsequently was eroded pre-Hardey Formation deposition. The remaining Mt Roe Basalt most likely occupied depressions, lagoons and channels in the paleo-topography.

Four areas of particular interest have been identified at Beasley Creek within the 16km unconformity:

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Figure 1: Beasley Creek: Map showing 16km geological unconformity between Lower Fortescue Group and Old Archean, almost continuous Hardey Formation and/or Conglomerate, intermittently outcropping Mt Roe Basalt plus location of historical workings, scrapings and RC drilling

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Beasley Central

Beasley Central is the most interesting target and occupies a valley approximately 2km long. Hardey Conglomerate up to 40m thick and dipping 40o to the northeast has been mapped against the Old Archean unconformity surface and overlying sandstones of the Hardey Formation. The conglomerate comprises polymictic clasts of basalt, granite and quartz set in a coarse-grained sandy matrix. The pebbles are rounded and range from coarse to boulder sized.

Gold has been recovered since the late 1970’s from colluvium overlying the Hardey Conglomerate in the central part of the prospect. There is evidence of extensive mechanical scraping and treating of the dirt through a now removed screening plant to extract the coarse nugget gold. Screened material from the processing was been placed in vats constructed on the flats on the eastern side of the valley presumably for leaching. GSWA records indicate 70oz of gold production to 1994. However, these records appear incomplete and understated given the extent of the workings and infrastructure.

CRA Exploration completed nickel and PGE exploration over the area between 1993 – 1995 with the focus being mineralisation within dolerite intrusions in the Hardey Sandstone sequence. CRA’s work included regional stream sediment sampling, soil sampling and limited drilling. The regional stream sediment sampling identified gold anomalism in creeks draining the prospect. CRA recognised the association of the gold scrapings and conglomerate rocks as a possible Witwatersrand-style setting and completed a programme of five, very shallow trenches across the conglomerates which it channel sampled. No anomalous nickel-PGE values were returned and the project was surrendered.

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Figure 2: Beasley Central prospect geology

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After CRA a private company, Vageta Pty Ltd, secured the ground and followed-up on the CRA results with further stream sediment sampling and soil sampling covering the Old Archean as well as Fortescue Group sequences.

From 1997 to 1999 Diamond Rose NL (ASX: DSN) farmed into the ground and completed a programme of reverse circulation drilling directly targeting the conglomerate units that it believed to be the source of the alluvial gold, as well as a number of geochemical targets in the underlying Old Archean stratigraphy.

Diamond Rose drilled a total of 23 inclined and vertical holes over a strike of approximately 900m of the Hardey Conglomerate and reported its work to Geological Survey of Western Australia (GSWA) in WAMEX Report A59957. The results (4m composite samples) were also released to ASX on the 30[th] November 1998.

Of the 23 holes, 19 intersected Hardey Conglomerate with several returning anomalous gold values (Appendix 1 and 2). The best intercept of 11.4g/t Au from 20m (RRC 15) was obtained close to the contact between the Old Archean surface and conglomerate boundary.

These historical results, if to be relied upon, would indicate that the anomalous gold mineralisation is from within the conglomerate unit. However, given the issues with effectively sampling this style of high nugget content mineralisation, the relevance of the drill results was probably not recognised at the time.

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Current Programme

Castle’s recent programme mapped in detail the location of the unconformity surface and conglomerate units through the Beasley Central prospect. The conglomerate unit appears to be part of the lower member of the Hardey Formation. Finer grained laminated sandstones of the Hardey Formation conformably overly the conglomerates to the north. Outcrops of Mt Roe Basalt lying directly on the unconformity surface were mapped immediately to the west of the prospect. A number of holes drilled by Diamond Rose logged basalt below the conglomerates in the central part of the prospect area suggesting a lower unconformity surface may also be present at depth. Subject to the paleo-topography in this particular area, this is likely to be Mt Roe Basalt and possibly Conglomerates.

The metal detecting team recovered a number of nuggets across the prospect with the majority found in alluvial material overlying the conglomerate. However, due to the disturbances caused by historical scraping activity, none of the nuggets recovered can be confirmed as having been originally ‘in-situ’.

Beasley East

The Beasley East Prospect covers a strike of approximately 2km. Mt Roe Conglomerates up to 60m thick are mapped directly on the Old Archean unconformity and are overlain in part by basalts belonging to the Mt Roe Basalt Formation. On the eastern side of the prospect a younger conglomerate, possibly of Hardey Formation age, overlies the basalt. Sandstones belonging to the Hardey Formation outcrop further to the northwest. No nuggets were detected on the prospect. However, access into the area is difficult and the cover in places is quite thick. Given the likelihood of two unconformity surfaces to explore, this area is nevertheless considered to be high-priority for further work.

Figure 3: Beasley East prospect geology

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Beasley West

The Beasley West prospect is in an approximately 1.2km long and between 200m and 600m wide paleodepression on the Old Archean unconformity surface. On the eastern side of the prospect basalt, believed to be Mt Roe Basalt, and conglomerate outcrop on the unconformity surface. There is evidence of inter-fingering of basalt and conglomerate along the contact. Intermittent outcrops of basalt occur on the unconformity surface further along the contact to the west, but outcrop is poor.

To the north, immediately below a prominent ridge of outcropping fine grained Hardey Sandstone, a thin conglomerate horizon has been mapped over a strike of approximately 700m and is likely to be Hardey Formation.

Work by the metal detecting team identified three gold nuggets in colluvium below the outcropping Hardey Formation conglomerate and above the unconformity surface. The area where the nuggets were found is largely covered by scree with little outcrop. At this stage, it is uncertain if the nuggets were derived from either the lower Mt Roe Basalt conglomerate or the Hardey Conglomerate units.

Beasley Far West

At the Beasley Far West prospect, Mt Roe Conglomerate has been mapped filling a paleo-depression in the unconformity surface approximately 300m wide. Late stage dolerite dykes have been mapped crosscutting the stratigraphy.

The conglomerate is approximately 70m thick and tapers out to the east and west but outcrops poorly. To date no gold nuggets have been found in this area.

Photo 3: Conglomerate outcrop at Beasley Far Photo 4: Conglomerate outcrop at Beasley East West

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Follow-up programme

Castle is planning a further round of work at Beasley Creek as soon as weather and access conditions allow. This will include detailed metal detecting and the collection of stream sediment samples from the advanced targets defined to date. Once the Exploration Licence is granted, Castle plans to bulk sample the conglomerate at the Beasley Central prospect.

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Update on Coolyia Creek

The field mapping, detecting and sampling programme at Coolyia Creek is planned to proceed once the restrictive weather and field conditions abate.

Stephen Stone Managing Director Mb 0418804564 [email protected]

About Castle Minerals Limited

Castle Minerals is listed on the Australian Stock Exchange (ASX: CDT) and headquartered in Perth, Western Australia. In addition to its interest in the Coolyia Creek and Beasley Creek ‘Witwatersrandstyle’ conglomerate-hosted gold projects in the Pilbara region of Western Australia, it has a large contiguous tenure position in the Upper West region of Ghana, West Africa, a country with a long history of gold exploration and mining. Its Ghana licence holdings encompass large tracts of highly prospective Birimian geological terrane, the host to many of West Africa’s multi-million-ounce gold mines. All of Castle’s ground in Western Australia and Ghana, whilst at a relatively early stage of exploration, presents a number of compelling targets that offer considerable opportunities for discoveries.

Cautionary Statement

The Coolyia Creek and Beasley Creek Projects are considered to be of early stage, grass roots exploration status. No Competent Person has done sufficient work in accordance with JORC Code 2012 to conclusively determine if gold is present in conglomerates on the licences applied for or to estimate in what quantities but in each case the general integrity of mapping by the GSWA has been confirmed. It is possible that following further evaluation and/or exploration work that the confidence in the information used to identify and acquire interests in the areas of interest in the Pilbara may be reduced when reported under JORC Code 2012. No work other than a desk-top review or low-impact reconnaissance mapping and sampling can be undertaken at either Project until the licences are granted which amongst other things requires the consent of the Minister, or an Officer of the department acting with the authority of the Minister, and is also subject to the statutory Native Title notification and negotiation period.

Competent Persons Statement

The scientific and technical information in this Report that relates to the geology of the deposits and exploration results is based on information compiled by Mr Stephen Stone, who is a Director of Castle Minerals Limited. Mr Stone is a Member of the Australian Institute of Mining and Metallurgy and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Stone is the Qualified Person overseeing Castle’s exploration projects and has reviewed and approved the disclosure of all scientific or technical information contained in this announcement that relates to the geology of the deposits and exploration results.

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Forward Looking Statement

Statements regarding Castle’s plans, forecasts and projections with respect to its mineral properties and programmes are forward-looking statements. There can be no assurance that Castle’s plans for development of its mineral properties will proceed as currently expected. There can be no assurance that Castle will be able to confirm the presence of Mineral Resources or Ore Reserves, that any mineralisation will prove to be economic or that a mine will successfully be developed on any of Castle’s mineral properties. The performance of Castle may be influenced by a number of factors which are outside the control of the Company, its Directors, staff or contractors.

Appendix 1: 4m composite intercepts of gold within Hardey Conglomerate stratigraphy obtained by RC holes completed in 1998 by the Vageta / Diamond Rose NL joint venture on the Beasley Central Prospect (WAMEX Report A59957)

Hole Easting Northing RL Depth
(m)
Azim Dip From
(m)
To
(m)
Interval
(m)
Grade
(g/t Au)
RRC01 535789 7483102 479 124 0 -90 4 8 4 0.023
and 16 20 4 0.017
and 32 36 4 0.1
RRC02 535839 7483096 484 60 0 -90 4 40 36 0.02
RRC03 535884 7483083 473 80 0 -90 20 28 8 0.046
RRC04 535932 7483068 470 60 0 -90 4 36 32 0.02
RRC05* 535976 7483041 470 100 0 -90 0 36 36 0.023
RRC06 536016 7483007 467 80 194 -60 0 8 8 0.016
RRC07 536059 7482991 466 60 0 -90 8 12 4 0.011
RRC08 535961 7483015 470 51 0 -90 0 12 12 0.047
RRC09 535914 7483042 472 70 0 -90 4 24 20 0.034
RRC10 535880 7483060 467 60 0 -90 0 8 8 0.151
incl 0 4 4 0.29
RRC11 535825 7483062 472 80 201 -60 No Hardey Conglomerate
RRC12 535790 7483063 475 50 0 -90 0 12 12 0.038
RRC13* 535745 7483120 483 124 0 -90 4 28 24 0.02
RRC14* 535720 7483149 484 100 0 -90 24 40 16 0.017
RRC15 535656 7483159 477 100 0 -90 0 24 24 1.91
inc 20 24 4 11.4
RRC16 535607 7483172 472 100 0 -90 0 24 24 0.02
RRC17 535562 7483188 471 80 0 -90 0 16 16 0.017
RRC18 535511 7483201 469 80 0 -90 20 32 12 0.024
RRC19 535461 7483228 469 80 195 -90 No Hardey Conglomerate
RRC20 535563 7483168 464 120 0 -90 20 32 12 0.07

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Hole Easting Northing RL Depth
(m)
Azim Dip From
(m)
To
(m)
Interval
(m)
Grade
(g/t Au)
incl 20 24 4 0.18
RRC21 535645 7483137 469 60 0 -90 No Hardey Conglomerate
RRC22 535685 7483122 468 123 195 -60 No Hardey Conglomerate
RRC23 535731 7483094 477 60 0 -90 0 8 8 0.03

NB: Collar co-ordinates from Castle GPS survey

*Assumed collar position as collar unable to be located in field by Castle

Appendix 2: JORC Code, 2012 Edition – Table 1

• Section 1: Sampling Techniques and Data

Criteria JORC Code explanation Certified Person 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 down hole gamma
sondes, or handheld XRF instruments, etc).
These examples should not be taken as
limiting the broad meaning of sampling.
Sampling has been undertaken with Reverse
Circulation (RC) drilling.
Sampling
was
carried
out
using
protocols
established by Vageta Pty Ltd at the time.
Prospectors / metal detectorists working under the
direction of the mapping geologist used metal
detectors to identify flake and nugget gold
Include reference to measures taken to ensure
sample representivity and the appropriate
calibration of any measurement tools or
systems used.
RC samples were described as being collected as
single metre intervals. No other details are
available
Aspects of the determination of mineralisation
that are Material to the Public Report.
The
gold
mineralisation
expected
in
the
conglomerate unit is coarse grained with a high
nugget component causing sampling to be
problematic
In cases where ‘industry standard’ work has
been done this would be relatively simple (eg
‘reverse circulation drilling was used to obtain
1m samples from which 3kg was pulverised to
produce a 30g 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.
No description of the methods used to undertake
the sampling have been described. It is assumed
standard industry techniques were applied. Four
metre composite samples were routinely collected
down the hole and submitted for assay.
Drilling
techniques
Drill type (eg core, reverse circulation, open-
hole hammer, rotary air blast, auger, Bangka,
sonic, etc) and details (eg 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).
Reverse Circulation drill technique
Drill sample
recovery
Method of recording and assessing core and
chip sample recoveries and results assessed.
Information not available

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Criteria JORC Code explanation Certified Person Commentary
Measures taken to maximise sample recovery
and ensure representative nature of the
samples.
Information not available
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.
The gold mineralisation in the conglomerate rocks
is believed to be coarse grained with a high nugget
effect. The size of the sample and method of
processing the samples is critical in establishing
accurate grades for the intersections. The small
sample size collected by RC drilling is not sufficient
to
accurately
estimate
the
grade
of
the
mineralisation.
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 drill holes were geologically logged. The
descriptions appear to be complete and provide a
geological
framework
to
constrain
the
mineralisation
Whether logging is qualitative or quantitative
in nature. Core (or costean, channel, etc)
photography.
Geological logging recorded a description of the
major lithologies recovered from the drill chips.
Quantitative estimates of the percentage of quartz
veining were made.
The total length and percentage of the
relevant intersections logged.
All drill holes were geologically logged.
Sub-sampling
techniques
and sample
preparation
If core, whether cut or sawn and whether
quarter, half or all core taken.
N/A
If non-core, whether riffled, tube sampled,
rotary split, etc and whether sampled wet or
dry.
N/A
For all sample types, the nature, quality and
appropriateness of the sample preparation
technique.
Composite 4m samples were prepared from the
1m samples collected during the drilling. No
details were provided on how the composite
samples were collected. For sampling gold
mineralisation with an expected high component
of coarse gold the sample size is not considered
representative.
Quality control procedures adopted for all
sub-sampling
stages
to
maximise
representivity of samples.
Not described
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.
Not described
Whether sample sizes are appropriate to the
grain size of the material being sampled.
The sample size is not considered sufficient to
adequately represent the mineralisation
Quality of
assay data
and
laboratory
tests
The nature, quality and appropriateness of
the assaying and laboratory procedures used
and whether the technique is considered
partial or total.
Samples were submitted to ALS Laboratories Pty
Ltd. Gold was analysed by the PM205 technique
with a lower detection limit of 0.001 ppm. Cu, Pb,
Zn, Ag, As, Fe, Bi, Cd, Co, Mg, Mn, Mo, Ni, P, Sb,
Cr were analysed bythe IC 205 technique
For
geophysical
tools,
spectrometers,
handheld
XRF
instruments,
etc,
the
parameters used in determiningthe analysis
N/A

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Criteria JORC Code explanation Certified Person Commentary
including instrument make and model,
reading times, calibrations factors applied
and their derivation, etc.
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.
Only internal laboratory QA/QC was undertaken
Verification of
sampling and
assaying
The verification of significant intersections by
either independent or alternative company
personnel.
During the recent Castle field campaign, the
remnants of sample bags from several holes were
located close to drill collars. The bags were in a
highly degraded condition and depth intervals
obscured. Metal detecting of the sample bags
failed to identify any gold nuggets or flakes
The use of twinned holes. No twinned holes
Documentation of primary data, data entry
procedures, data verification, data storage
(physical and electronic) protocols.
All information on the full drilling programme is
described in “1999 Annual Report on E47/827,844
Rocklea Gold Project Pilbara WA “Vageta Pty Ltd
WAMEX A59957.
Discuss any adjustment to assay data. No applicable
Location of
data points
Accuracy and quality of surveys used to locate
drill holes (collar and down-hole surveys),
trenches, mine workings and other locations
used in Mineral Resource estimation.
The coordinates for the drill holes were initially
recorded in local grid coordinates. During the
recent Castle field mapping campaign, the
coordinates of the drill holes were measured by
hand held GPS with an accuracy of approximately
3m. The hole identifications were made by
comparing drill plans in the report with the GPS
drillpickup
Specification of the grid system used. Local grid and GDA 94 Zone 50 datum
Quality and adequacy of topographic control. The topography in the area of drilling has
moderate relief, the accuracy of the elevation data
from a GPS may only be accurate to +/-10m, and
is not considered to be an absolute elevation
reading
Data spacing
and
distribution
Data spacing for reporting of Exploration
Results.
Drilling was on sections spaced approximately
100m apart. Generally, two holes were drilled on
each section spaced approximately 30m apart.
Hole spacing was determined by topography
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.
No mineral resources are reported in this
announcement
Whether sample compositing has been
applied.
N/A
Orientation of
data in
relation to
Whether the orientation of sampling achieves
unbiased sampling of possible structures and
the extent to which this is known, considering
the deposit type.
The samples were collected from holes drilled
approximately
perpendicular
through
the
stratigraphy

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Criteria JORC Code explanation Certified Person Commentary
geological
structure
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.
Drill sections were positioned perpendicular to the
strike of the stratigraphy. Holes were inclined
either -60Oor vertical. The stratigraphy dips
approximately 40O– 50Oto the north.
Sample
security
The measures taken to ensure sample
security.
No details are available on the steps Vageta took
to ensure the security of the samples or field data.
Audits or
reviews
The results of any audits or reviews of
sampling techniques and data.
No audits or reviews of sampling techniques have
been conducted.

• Section 2: Reporting of Exploration Results

Criteria JORC Code explanation Certified Person 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.
All work reported was completed on ELA47/ 3490
which is currently under application. Castle
Minerals Ltd has acquired an 80% interest in the
licence under the terms advised to the ASX on 7
November 2017.
As the tenement has not been granted the metal
detectingwas undertaken under a Miners Right
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.
The tenement is still in the application stage. No
impediments to grant have been identified.
Exploration
done by other
parties
Acknowledgment and appraisal of exploration
by other parties.
The project area has been subject to a number of
past exploration campaigns. The most relevant
work to the current work was completed by CRA
Exploration Pty Ltd between 1993 and 1995, and
a Vageta Pty Ltd / Diamond Rose Joint Venture
between 1996 and 2000.
Geology Deposit type, geological setting and style of
mineralisation.
Castle is primarily exploring the project for placer
conglomerate-hosted gold mineralisation situated
on the unconformity surfaces within the Fortescue
Group.
Drill hole
Information
A summary of all information material to the
understanding of the exploration results
including a tabulation of the following
information for all Material drill holes:
o easting and northing of the drill hole
collar
o elevation or RL (Reduced Level –
elevation above sea level in metres) of
the drill hole collar
o dip and azimuth of the hole
o down hole length and interception
depth
o hole length.
Refer Appendix 1
If the exclusion of this information is justified
on the basis that the information is not Material
N/A

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Criteria JORC Code explanation Certified Person Commentary
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
No weighting of drill results has been undertaken.
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.
Assay results reported are based on 4m
composite samples originally collected by the
Diamond Rose / Vageta JV during its drilling
campaign
The assumptions used for any reporting of
metal equivalent values should be clearly
stated.
N/A
Relationship
between
mineralisation
widths and
intercept
lengths
These relationships are particularly important
in the reporting of Exploration Results.
N/A
If the geometry of the mineralisation with
respect to the drill hole angle is known, its
nature should be reported.
N/A
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’).
N/A
Diagrams Appropriate maps and sections (with scales)
and tabulations of intercepts should be
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.
N/A
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.
Reported results relate to those intercepts
obtained in Hardey Conglomerate only and are
provided purely to highlight anomalism in this
unit.
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.
No other material exploration data to report at this
time.
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).
Further work is planned as stated in this
announcement.

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Castle Minerals Limited: Beasley Creek Update – 21 February 2018

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Criteria JORC Code explanation Certified Person Commentary
Diagrams clearly highlighting the areas of
possible extensions, including the main
geological interpretations and future drilling
areas, provided this information is not
commercially sensitive.
See figures in this announcement.

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