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CAPRICORN METALS LTD Capital/Financing Update 2016

Jul 3, 2016

64670_rns_2016-07-03_e2752c4f-984b-485b-9051-39c9e8290617.pdf

Capital/Financing Update

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ASX ANNOUNCMENT 4 July 2016

Australian Securities Exchange Code: CMM

ABN: 84 121 700 105

Board of Directors:

Mr Guy LeClezio Non-Executive Chairman

Mr Peter Thompson Managing Director

Mr Peter Langworthy Technical Director

Mr Heath Hellewell Non-Executive Director

Issued Capital:

Shares 487M Options 18.7M Share Price A$0.15 Market Cap. A$73M

EXPLORATION OFFICE: 1 Coventry Parade North Fremantle, WA 6159

REGISTERED OFFICE: 15 Lovegrove Close Mount Claremont, WA 6010

T +61 8 9384 3284

40% INCREASE IN BIBRA GOLD RESOURCE TO 914,000OZ PAVES THE WAY FOR IMMINENT SCOPING STUDY

+60,000m in-fill, extensional and exploration drilling program set to commence within two weeks as part of Capricorn’s strategy to rapidly advance Karlawinda Gold Project towards development

HIGHLIGHTS

  • Updated JORC Mineral Resource estimate completed for the Bibra Gold Deposit, part of the 100%-owned Karlawinda Gold Project in WA’s Pilbara. The updated resource, reported at a 0.5g/t Au cut-off grade, is (see Table 1 for details):

25.5 million tonnes @ 1.1g/t Au for 914,000 ounces of gold

  • This new resource is constrained within an optimized open pit shell using a gold price of A$1750/oz which extends to a depth of approximately 240m.

  • This new resource represents a substantial (40%) increase in gold content (263,200z) from the previous Inferred Resource estimate of 18Mt at 1.1g/t for 650,800oz. These additional gold ounces are the product of significantly more tonnes (+7,500,000Mt) at the same grade.

  • When directly compared with the previous Inferred Resource (650,800oz), reported at a A$1600/oz gold price, the resource has increased by approximately 154,000oz. The additional 109,000oz included in the new headline resource figure come from outside the original A$1600/oz pit shell, reflecting the success of extensional drilling in the recent drill program and the higher gold price environment expanding the optimised pit shell.

  • The Bibra Inferred Resource has now been drilled on a 50m x 50m spacing or closer, and was estimated using data from 43 diamond holes (5,373m) and 313 Reverse Circulation holes (52,202m). This includes the 47-hole (9,642m) program completed by Capricorn in Q2 2016.

  • Importantly, the average gold endowment within the optimised pit shell is 3,800oz per vertical metre.

  • The new Inferred Mineral Resource will underpin Scoping Study activities for the Karlawinda Gold Project, which have been advancing in parallel to the resource estimation process. The Scoping Study is on track to be completed by the end of July 2016.

  • A major new program of up to 60,000m of in-fill drilling to upgrade the resource to Indicated status to underpin a Definitive Feasibility Study (DFS) is scheduled to commence at Karlawinda within two weeks, initially with three RC drill rigs. This upcoming program will also target potential extensions of the deposit which were identified in the recent drill program.

  • Drilling activities will also commence to test a series of high-priority near-surface exploration targets in close proximity to the Bibra resource .

4[th] July 2016 : Capricorn Metals Ltd (ASX: CMM) is pleased to advise that it has taken an important step in its strategy to fast-track the development of its 100%-owned Karlawinda Gold Project in WA (Figure 1) with the completion of an updated Inferred Mineral Resource estimate for the Bibra open pit gold deposit.

The updated resource, comprising 25.5 million tonnes grading 1.1g/t Au for 914,000 ounces of contained gold, represents a 40% increase over the previously published Inferred Resource estimate for Bibra of 18Mt at 1.1g/t for 650,800oz.

This reflects the success of the Company’s maiden 47-hole (9,642m) drill program at Karlawinda, completed last quarter and will form the foundation of ongoing Scoping Study activities, which have been progressing in parallel with the resource estimation process.

The Karlawinda Scoping Study remains on schedule for completion by the end of July, and will in turn pave the way for a Definitive Feasibility Study (DFS) commencing in the second half of 2016.

To that end, Capricorn will shortly commence a major new program of resource in-fill and extensional drilling at Karlawinda, initially with three RC drill rigs. This program, which will comprise up to 60,000m of RC and diamond drilling, will commence within two weeks and will also include exploration drilling to test numerous near-mine targets. Further details about this program will be provided shortly.

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Figure (1): Karlawinda Gold Project Location Plan

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Page 2 of 21

RESOURCE SUMMARY

The June 2016 Inferred Resource for the Bibra gold deposit now reports at 25,500,000 tonnes @ 1.1g/t for 914,000 ounces of contained gold . The resource is reported at a 0.5g/t Au cut-off grade and is constrained within an optimized open pit shell using a gold price of A$1750/oz. Details of the resource are provided in Table (1).

Key points identified from this work include:

  • The gold content of the Inferred Resource has increased by 263,000oz (or 40%) from the previous estimation.

  • When directly compared with the previous Inferred Resource of 650,000oz, reported at a A$1600/oz gold price, the resource has increased by approximately 154,000oz. The additional 109,000oz has come from outside the A$1600/oz pit shell and is a product of the higher gold price environment expanding the optimised pit shell.

  • The laterite, saprolite and transition zones have increased to a total of 285,000oz. This is an increase of 45,000oz in a near-surface position.

  • The modelled mineralized zones that form the basis of the resource show good continuity and are based on data from 43 diamond holes (5,373m) and 313 Reverse Circulation holes (52,202m). This includes the 47-hole (9,642m) program completed by Capricorn earlier in the year. Drill spacing is now on a 50m x 50m spacing or closer.

TABLE(1): Bibra Gold JORC Open Pit Inferred Resource Estimate(as at June 30, 2016) TABLE(1): Bibra Gold JORC Open Pit Inferred Resource Estimate(as at June 30, 2016) TABLE(1): Bibra Gold JORC Open Pit Inferred Resource Estimate(as at June 30, 2016) TABLE(1): Bibra Gold JORC Open Pit Inferred Resource Estimate(as at June 30, 2016)
Domain Tonnes Grade(g/t Au) Ounces
Laterite 2,100,000 1.3 85,000
Saprolite 4,300,000 1.0 142,000
Transition 1,500,000 1.2 58,000
Fresh 17,600,000 1.1 629,000
Total 25,500,000 1.1 914,000

Notes on the Inferred Mineral Resource:

  1. Refer to JORC 2012 Table (1) in Appendix 1 for full details.

  2. Discrepancy in summation may occur due to rounding.

  3. The mineralisation has been wireframe modelled using a 0.3g/t Au assay cut-off grade. The resource estimate has been reported above a block grade of 0.5g/t Au.

  4. The resource has been constrained by a A$1750/ounce conceptual optimal pit shell.

  5. Ordinary Kriging was used for grade estimation utilising Surpac software v6.6.2.

  6. Grade estimation was constrained to blocks within each of the mineralisation wireframes.

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Page 3 of 21

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Figure (2): Bibra Gold Deposit – Resource Block Model (Blue: $A1750 optimal pit shell, Brown: Laterite resource, Yellow: Saprolite and Fresh resource)

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Figure (3): Karlawinda Gold Project Location Plan (Blue: $A1750 optimal pit shell, Brown: Laterite resource, Yellow: Saprolite and Fresh resource)

SCOPING STUDY

This new Inferred Mineral Resource will underpin the Scoping Study activities that have been advancing in parallel to the resource estimation process. The Scoping Study is on track for completion by the end of July 2016, and will include components on Geology, Metallurgy, Open Pit design, Hydrology, Environment, Geotechnical, Process Plant design, Waste dump and Tailings Dam design, Tenure and Financing.

Highly regarded consultants have been selected for these Scoping Study elements, with Geology and Financing being done in-house with external peer reviews.

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Page 4 of 21

DFS RESOURCE DRILLING

In-fill drilling to upgrade the resource to Indicated status and underpin a Definitive Feasibility Study (DFS) is scheduled to commence within two weeks, initially with three RC drill rigs. The drilling is designed to provide greater confidence in the resource by closer spaced drilling and to better define extensions to the resource identified in the 2016 RC drilling.

Some close-spaced ‘variography’ drilling patterns will also be included to establish some constraints for future grade control drilling.

EXPLORATION OPPORTUNITIES

Evaluation of the existing drilling database has identified a series of near-surface targets within close proximity to the Bibra resource. Drilling programs will also be undertaken on a selection of these targets in parallel with the resource upgrade drilling. All targets have the potential to deliver nearsurface additions to the resource base.

MANAGEMENT COMMENT

Capricorn’s Managing Director, Peter Thompson, said the extensional drilling completed in March and April this year had demonstrated the outstanding continuity of the mineralisation from hole to hole, laying the foundations for a substantial increase in the Bibra Resource.

“This is a great result for shareholders, which has been achieved in a relatively short space of time,” Mr Thompson said. “The updated Inferred Resource will form the foundation of our Scoping Study activities, due to be completed by the end of this month.

“Importantly, it also paves the way for the next phase of evaluation and development activity at Karlawinda, with a major in-fill and extensional drill programme due to kick off within the next fortnight to upgrade the Bibra resource to Indicated Resource status and to test a number of new, recently identified near-mine targets.

“This is an exciting time for Capricorn as our strategy to fast-track the development of the Karlawinda Project rapidly takes shape against the backdrop of a strengthening gold price and favourable investment environment for Australian gold development projects.

“Shareholders can look forward to a very busy second half with frequent news-flow from drilling activities and regular updates as we tick the various boxes required to advance the project to development.”

For and on behalf of the Board

Peter Thompson

Managing Director

For further information, please contact:

Mr Peter Thompson, Managing Director Mr Nicholas Read Email: [email protected] Read Corporate Phone: 0417 979 169 Phone: 0419 929 046

Competent Persons Statement

The information in this report that relates to Exploration Results or Mineral Resources is based on information compiled or reviewed by Mr. Peter Langworthy, Technical Director, who is a Member of the Australian Institute of Mining and Metallurgy. Mr. Peter Langworthy is a full time Director of Capricorn Metals Limited and has sufficient experience, whi1ch is relevant to the style of mineralisation and types of deposit under consideration and to the activities undertaken, to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code of Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr. Peter Langworthy consents to the inclusion in the report of the matters based on the information in the form and context in which it appears.

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Page 5 of 21

Appendix 1: Bibra RC Drilling Program JORC Code, 2012 Edition Table 1

Section 1 Sampling Techniques and Data (Criteria in this section apply to all succeeding sections.)

Criteria JORC Code explanation 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.
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 (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.
Drilling in the Bibra deposit has been completed by
two companies Independence Group (IGO) and
Capricorn Group (CMM). The methods of collection
have been very similar in terms of sampling
procedures, drilling methods and sampling quality.
For 2016 RC drilling the standard method of
sample collection included the following:
2kg - 3kg samples were split from dry 1m bulk
samples. The sample was initially collected from
the cyclone in an inline collection box with
independent upper and lower shutters. Once the
metre was completed, the drill bit was lifted off the
bottom of the hole, to create a gap between
sample, when the gap of air came into the
collection box the top shutter was closed off. Once
the top shutter was closed, the bottom shutter was
opened and the sample was dropped under gravity
thorough a Metzke cone splitter. Once drilling
reached fresh rock a fine spray of water was used
to suppress dust and limit the loss of fines
thorough the cyclone chimney. A second 2kg-3kg
sample was collected at the same time the original
sample. This sample has been stored on site. These
duplicate samples have been retained for follow up
analysis and testwork.
The bulk sample of the main ore zone was
discharged from the cyclone directly into green
bags. The bulk sample from the waste and hanging
wall zones was collected in wheelbarrows and
dumped into neat piles on the ground.
During the sample collection process, the cone
split, original and duplicate calico samples and the
reject green bag samples were weighed to test for
bias’s and sample recoveries. The majority of the
check work was undertaken through the main ore
zones, however approximately 10% of the holes
drilled had the whole hole weighed.
Field duplicates were collected at a ratio of 1:20
through the mineralised zones and collected at the
same time as the original sample through the B
chute
of
the
cone
splitter.
OREAS
certified
reference material (CRM) was inserted at a ratio of
1:20 through the mineralised zone. The grade
ranges of the CRM’s were selected based on grade
populations and economic grade ranges.
In 2012, RC samples were collected for 1m
intervals using a rig-mounted cone splitter that was
not hydraulically adjustable. Samples were meant
to be 12½% from each of the two sample chutes
and 75% collection of the remainder in plastic
bags. A system for measuringweights of bags to

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Page 6 of 21

Criteria JORC Code explanation Commentary
prove sample representivity commenced with the
program, and showed that the splitter and
collection system was not optimal for much of the
RC drilling. Issues such as undersize and oversize
samples were common, and bias between the
paired samples was seen, particularly in the
regolith as well as in the fresh rock where the
collection system had not been cleaned. These
issues are discussed in the section on Drill Sample
Recovery. Wet samples were grab sampled and
recorded as such in the database, few were within
mineralised zones. NQ core was half-core sampled
and
HQ/HQ3
core
was
initially
quarter-core
sampled. Issues with quarter-coring in the regolith
with complete disintegration of the sample and loss
of material were identified, and reverted to half-
core sampling with less water for better sample
quality. Standards, blanks and field duplicates were
inserted into each batch of samples submitted to
the laboratory.
Prior to 2011 the standard method of sample
collection included the following:
Prior to 2011, RC samples were collected at the rig
using a cone splitter that split the 1m cuttings into
87½% & 12½% splits. RC samples were originally
composited to 2m by taking scoops from each of
the 1m interval 87½% portions, and submitted to
Genalysis for sample preparation and analysis.
Samples that returned values >0.5g/t Au were
submitted as 1m samples to Genalysis (the 12½%
splits from the cone splitter). In 2011, RC
samples were not composited and 1m interval
samples were sent directly to Genalysis. A
rigmounted cone splitter was used to split the
samples into 87½% & 12½% splits. NQ2 core was
half-core sampled and PQ and PQ3 core was
quarter-core sampled using a manual core-cutting
diamond saw without water in the oxide zone. The
dry cutting was to prevent loss of clays for the
metallurgical
samples.
Sample
quality
is
considered to be good and all RC drilling within the
resource area was dry.
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.).
All Drilling in 2016 has been completed by reverse
circulation
using
a
DRA600
RC
rig
with
1350cfm@500psi compressor with a 1800cfm x
800psi booster and 900cfm, 350psi auxiliary. The
hole was drilled using a nominal 135mm diameter
face sampling bit, and to limit the hole deviation
4metre thick wall rod and top and bottom
stabilisers were used.
In 2012, 60 RC drillholes for 8409m and RC
precollars for 534.8m were drilled by Blue Spec
Mining using a KLBS900 Multipurpose rig with
4inch drill rods and face sampling 5inch bits. Two
HQ3/NQ diamond holes were drilled by Blue Spec
for 305.3m using the Multipurpose rig and 24
HQ/HQ3 diamond holes were drilled by Foraco for
3158.6m using a UDR1000 truck-mounted rig.
Core from the Foraco drilling was oriented using an
Ezymark orientation tool. Numerous aircore holes

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Page 7 of 21

Criteria JORC Code explanation Commentary
have been drilled into the project but these were
not used in the resource estimate
In 2009-2010, principally Reverse Circulation (RC)
drillholes using face sampling bits (Ranger Drilling
Services, Boart Longyear Pty Ltd or Profile Drilling
Services) with 3 diamond holes that have RC
precollars (precollars drilled by Ranger Drilling
Services (70-202m downhole depth) and NQ2
diamond tails drilled by Boart Longyear Pty Ltd)
and 2 other diamond holes (PQ3 sized core by Drill
West for metallurgical testing purposes). Three
core holes (KBD026-028) were oriented using an
Ace orientation tool. In 2011, 78 RC drillholes for
14,103m were drilled by Profile Drilling Services
using a Schramm RC rig and 11 diamond holes
(two with RC precollars, precollars drilled by Profile
Drilling Services) drilled by Drill West using a Boart
Longyear LF90D skid mounted rig. Core diameter
was
PQ3
and
PQ
to
provide
samples
for
metallurgical
testwork
and
to
also
twin
RC
drillholes. Core was oriented (where possible)
using a Reflex ACE orientation instrument.
Drill
sample
recovery
Method of recording and assessing
core and chip sample recoveries
and results assessed.
Measures taken to maximise
sample recovery and ensure
representative nature of the
samples.
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.
During the sample collection process, the cone
split, original and duplicate calico samples and the
reject green bag samples were weighed to test for
bias’s and sample recoveries. The majority of the
check work was undertaken through the main ore
zones, however approximately 10% of the holes
drilled had the whole hole weighed.
Once drilling reached fresh rock a fine spray of
water was used to suppress dust and limit the loss
of fines thorough the cyclone chimney.
At the end of each metre the bit was lifted off the
bottom to separate each metre drilled.
The majority of samples were of good quality with
ground water having minimal effect on sample
quality or recovery.
From the collection of recovery data, no identifiable
bias exists.
In
2012
RC
sample
recovery
was
variable,
particularly in the regolith. Sample quality was
recorded during logging and qualitative recovery
codes were assigned to each sample. Sample
weights were measured for each component of RC
hole cuttings in mineralised zones, with results
showing that regolith samples were generally poor
quality (both under and over-weight samples) and
quality was moderate in the other zones.
Quantitative sample recoveries for RC samples can
be calculated from the total recovered weights, and
will be taken into consideration prior to any future
change from an Inferred classification.
Core was reassembled for mark-up and was
measured, with metre marks and down-hole
depths placed on the core. Depths were checked
against driller’s core blocks and discrepancies
corrected after discussion with drillers. Core loss

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Page 8 of 21

Criteria JORC Code explanation Commentary
was recorded in the geological log
Core recovery was generally good. RC sample
recovery prior to 2012 has been logged as good
with samples kept dry during drilling.
There is no obvious relationship between sample
recovery and grade. The poor precision in Bibra
assays hinders this analysis to some degree,
however the review was completed and no clear
relationship observed
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.
Whether logging is qualitative or
quantitative in nature. Core (or
costean, channel, etc.)
photography.
The total length and percentage of
the relevant intersections logged.
Reverse circulation chips were washed and stored
in chip trays in 1m intervals for the entire length of
each hole. Chips were visually inspected and
logged to record lithology, weathering, alteration,
mineralisation, veining and structure.
Data on rocktype, deformation, colour, structure,
alteration, veining, mineralisation and oxidation
state were recorded. RQD, magnetic susceptibility
and core recoveries were recorded.
RC chips sample quality and weights were also
recorded, including whether wet or dry
Logging is both qualitative and quantitative or
semi-quantitative
in
nature.
Core
was
photographed both dry and wet
Sub-
sampling
techniques
and sample
preparation
If core, whether cut or sawn and
whether quarter, half or all core
taken.
If non-core, whether riffled, tube
sampled, rotary split, etc. and
whether sampled wet or dry.
For all sample types, the nature,
quality and appropriateness of the
sample preparation technique.
Quality control procedures adopted
for all sub-sampling stages to
maximise representivity of
samples.
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.
Whether sample sizes are
appropriate to the grain size of the
material being sampled.
For holes KBRC284 to KBRC330. Samples were
split from dry, 1m bulk sample via a cone splitter
directly from the cyclone.
The quality control procedure adopted through the
process includes:
Weighing of both Calico samples and reject sample
to
determine
sample
recovery
compared
to
theoretical sample recovery and to check sample
bias through the splitter.
Field duplicates were collected at a ratio of 1:20
through the mineralised zones and collected at the
same time as the original sample through the B
chute of the cone splitter.
OREAS certified reference material (CRM) was
inserted at a ratio of 1:20 through the mineralised
zone. The grade ranges of the CRM’s was selected
based on grade populations and economic grade
ranges
The duplicate and CRM’s were submitted to the lab
using unique sample ID’s.
A 2kg – 3kg sample were submitted to Intertek
laboratory in Maddington in WA.
Samples were oven dried at 105°C then jaw
crushed to -10mm followed by a Boyd crush to a
nominal -2mm. Samples were rotary split to 2.5kg.
Samples were then pulverised in LM5 mills to 85%
passing 75μm under sample preparation code
EX03_05 which consists of a 5 minute extended
preparation for RC/Soil/RAB. The extended time for
the pulverisation is to improve the pulverisation of
samples due to thepresence ofgarnets in the

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Page 9 of 21

Criteria JORC Code explanation Commentary
samples
All the samples were analysed for Au using the
FA50/MS technique which is a 50g lead collection
fire assay
All core has been cut into half or quarter core for
sampling.
For early drillholes KBRC005-010, RC composite
samples (2m) were submitted to Genalysis where
they were sorted, dried and the total sample
pulverised in a single stage mix and grind if the
sample mass was <3kg. Samples >3kg mass were
riffle split using a 50:50 splitter and one half
pulverised. Samples were analysed for Au using an
aqua regia digestion (AR10/OM) of a 10g pulp
sample with ICP-MS determination. Samples that
returned
values
>0.5g/t
were
submitted
to
Genalysis as 1m resplit samples and prepared in a
similar manner as the composites.
For drillholes from KBRC011 to KBRC283 (2009-
2012), no compositing took place, 1m split RC
samples and core samples were submitted to
Genalysis for fire assay. Samples were oven dried
at 105°C then jaw crushed to -10mm followed by a
Boyd crush to a nominal -2mm. Samples were
rotary split to 2.5kg (2012 drilling). Samples were
then pulverised in LM5 mills to 85% passing 75µm.
All the samples were analysed for Au using the
FA50/AAS technique which is a 50g lead collection
fire
assay
with
analysis
by
Flame
Atomic
Absorption Spectrometry. The fire assay method is
considered a suitable assaying method for total Au
determination. The aqua regia digestion results
(used for samples that were <0.5g/t Au) may not
allow for total Au determination in the transition
and fresh rock zones. These aqua samples are
only present for 5 holes and therefore represent
only a very small percentage of the samples.
For core and RC samples the sample preparation
technique is appropriate and is standard industry
practice for a gold deposit.
Quality control for maximising representivity of
samples
included
sample
weights
measuring,
insertion
of
field
duplicates
and
laboratory
duplicates. Testwork during 2012 and 2013 by
Independence Group involved assessing the cost
and effectiveness of using multiple fire assays (up
to 4, averaging the results) to simulate a larger
sample mass, as well as 1kg LeachWell tests with
fire assay of the tail, and screen fire assays. All
methods would improve precision but at significant
cost. Testwork on grind time to see if finer
particles would improve precision showed that any
increase in grind time over 5mins resulted in rolling
and plating of the gold particles and did not reduce
their size, whereas the gangue minerals were
substantially reduced in size. The inability to
comminute the nuggety gold particles is part of the
poor precision problem when using 50g fire assay
charges. Field duplicates were inserted,but review

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Page 10 of 21

Criteria JORC Code explanation Commentary
of results is hampered by the assay repeatability
problem when using the 50g fire assay method.
Field duplicate and primary sample pairs, whether
assayed by screen fire assay or LeachWell assay
(with tail assay), and which used much larger
sample mass (1kg) for each of those methods,
showed much better precision in comparison.
Laboratory duplicates (50g fire assay) showed the
effects of the nuggety gold at Bibra also, with poor
precision seen in paired data plots. Screen fire
assay data has shown that the sieved fraction
below 75µm shows dramatically improved precision
and that the fraction with the +75µm particles is
causing the repeatability issue.
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.
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.
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.
In the 2016 drilling Samples were submitted to the
Intertek laboratory in Perth. In the waste zones,
analysis has been completed by a single fire assay.
In the main mineralised zone four fire assays from
the
sample
pulp
were
completed
and
then
averaged to determine, the assay grade of the
sample to reduce the impact of the nugget effect in
each ore zone sample. For sample prior to 2016
only single fire assay determination occurred on
each sample.
The samples from 2016 drilling were determined
for gold, pt, pd and additional elements/base
metals, using ICP optical emission spectrometry
and ICP mass spectrometry. Samples prior to
2016, were analysed using AAS.
Field duplicates were collected at a ratio of 1:20
through the mineralised zones and collected at the
same time as the original sample through the B
chute
of
the
cone
splitter.
OREAS
certified
reference material (CRM) was inserted at a ratio of
1:20 through the mineralised zone. The grade
ranges of the CRM’s were selected based on grade
populations and economic grade ranges.
Twin holes from the 2011 drilling showed that over
an
intercept,
the
grades
and
lengths
of
mineralisation compared well, whereas at the
individual assay level the results are highly variable
Verification
of sampling
and
assaying
The verification of significant
intersections by either independent
or alternative company personnel.
The use of twinned holes.
Documentation of primary data,
data entry procedures, data
verification, data storage (physical
and electronic) protocols.
Discuss any adjustment to assay
data.
Logging and sampling were recorded directly into a
Micromine field marshal template, which utilises
lookup tables and in file validation on a Toughbook
by the geologist on the rig.
Assay results when received were plotted on
section and were verified against neighbouring
holes.
Analysis of the RC/diamond hole twinning up,
showed that mineralised intervals above a cut-off
grade of 0.3g/t Au were similar in length and
moderately well correlated in grade. This suggests
there has not been any significant downhole
smearing in the RC drilling and sampling. It also
shows that averaging of numerous assays over an
interval gives repeatable results compared with
poor repeatability at the individual assay level, as
described above.

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Page 11 of 21

Criteria JORC Code explanation Commentary
From time to time assays will be repeated if they
fail
company
QAQC
protocols,
however
no
adjustments are made to assay data once accepted
into the database. Location
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.
Specification of the grid system
used.
Quality and adequacy of
topographic control.
2009
-
2012
drillhole
collar
positions
were
surveyed by licensed surveyors MHR Surveyors of
Cottesloe, WA. In 2016 the collar positions were
surveyed by Survey group of Osbourne Park, WA
The instrument used was a Trimble R8 GNSS RTK
GPS (differential) system. Expected relative
accuracies from the GPS base station were ±2cm in
the horizontal and ±5cm in the vertical direction.
Co-ordinates were surveyed in the MGA94 grid
system
Downhole surveys in 2009 & 2010 were carried out
by the drillers at about 50m intervals using a
Reflex EZ shot digital downhole camera. Readings
were taken in a non-magnetic stainless steel rod
near the bottom of the drill string. The depth, dip,
azimuth and magnetic field were recorded at each
survey point. In 2009 gyro surveys were
attempted however most holes had collapsed and
the gyro survey was successful to end of hole in
only one drillhole. The top parts of other holes
were
surveyed
using
the
gyro
instrument
(Downhole Surveys Australia, readings at 5m
intervals) and given priority over Reflex surveys in
the database. The gyro survey was not continued
in 2010 due to the limited success of the 2009
program. Downhole survey readings have been
checked by extracting the drillholes and displaying
them in graphics in the Surpac software program,
with spurious readings removed by assigning them
a lesser priority in the database. The lesser
priority surveys were not used during the resource
estimation.
Drillholes
KBRC101-105;107-
123;125129;131-134
had
only
one
survey
downhole (near the bottom of the hole) due to
their short lengths (<112m long).
In the 2016 drill program the Downhole surveys
were collected by driller operated in-rod reflex
north seeking gyro at the end of each hole. The
measurements were taken every 10 metres.
Drillhole location data were initially captured in the
MGA94 grid system and have been converted to a
local grid for resource estimation work.
Drillhole location data were initially captured in the
MGA94 grid system and have been converted to a
local grid for resource estimation work. The
MGA94 ties to local grid were surveyed by
independent
surveyors
MHR
Surveyors.
An

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Page 12 of 21

Criteria JORC Code explanation Commentary
elevation
adjustment
of
+2000m
was
also
conducted on the local grid co-ordinates
The natural surface topography was modelled using
a DTM generated from the 2012 airborne LiDAR
survey conducted in November 2012 by AAM Pty
Limited. The DTM was rotated in-house to the local
grid coordinate system. Horizontal point accuracy
is expected to be <0.33m and vertical accuracy to
0.15m. Ground control was established using RTK
GPS and ALTM3100 Static GPS. The reference
datum was GDA94 and the projection was MGA
Zone 50, with the data supplied as 50cm and 1m
contours in MGA Zone 51. Topographic control is
of good quality and is considered adequate for
resource estimation
Data
spacing
and
distribution
Data spacing for reporting of
Exploration Results.
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.
Whether sample compositing has
been applied.
No exploration results have been reported
Drilling is being completed on a 50x50m grid. Drill
spacing
is
sufficient
for
current
resource
classification
Samples collected and analysed for each metre
down the hole. Whole hole is analysed.
Samples were collected in 1 metre intervals.
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.
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 lines are oriented across strike on a local grid.
Bibra orebody dips at 30 degrees to the North
West.
Holes in the drill programs have being drilled at
inclination of -60 and -90 degrees. The orientation
of the drilling is suitable for the mineralisation style
and orientation of the Bibra mineralisation.
Sample
security
The measures taken to ensure
sample security.
Calico
sample
bags
are
sealed
into
green
bags/polyweave bags and cable tied. These bags
were then sealed in bulka bags by company
personnel, dispatch by third party contractor, in-
company
reconciliation
with
laboratory
assay
returns.
Audits
or
reviews
The results of any audits or
reviews of sampling techniques
and data.
Program reviewed by company senior personnel.
Prior to commencement of the 2016 drill program a
meeting of industry specialists was held to discuss
the sampling and analytical techniques to get
consensus and or improvements on the drilling and
sampling protocol.
Prior to 2016, a review of practices documented in
the IGO technical report supplied to Optiro Pty Ltd
in 2012 as part of the resource estimate review did
not highlight any significant issues.

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Page 13 of 21

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 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 Bibra deposit is located in EPM52/1711 held
by
INDEPENDENCE
KARLAWINDA
PTY
LTD.
Capricorn Metals is currently in a purchase
agreement with Independence Group Ltd, where
acquisition will be finalised in 2016. Please see
Capricorn Metals ASX at http://capmetals.com.au/
for further details
The Bibra mineralisation is within the granted
E52/1711 exploration tenement in the Pilbara
region
of
Western
Australia.
E52/1711
was
acquired from BHPB in 2008. BHPB retain a 2%
NSR and a claw-back provision whereby BHPB can
elect to acquire a 70% equity in the project only if
JORC compliant reported resources of 5,000,000
ounces
of
gold
and/or
120,000
tonnes
of
contained nickel have been delineated. The
Nyiyaparli
group
are
Native
Title
claimants
covering an area including E52/1711. There is no
known heritage or environmental impediments
over the lease. A mining lease sufficient in size to
cover the Bibra resource area and potential
associated infrastructure for a future mining
operation has been applied for, and IGO is
currently in negotiation with the Nyiyaparli group
over this application.
No other known impediments exist to operate in
the area.
Exploration
done by other
parties
Acknowledgment and appraisal
of exploration by other parties.
Prior to Capricorn Metals, the tenement was held
by the Independence group (IGO) who undertook
exploration between 2008 & 2014. Prior to
Independence group, WMC explored the area from
2004 to 2008
Geology Deposit type, geological setting
and style of mineralisation.
Bibra is part of a large-scale Archaean aged gold
mineralized system. The resource is hosted within
a package of deformed meta-sediments which has
developed on at least two parallel, shallow dipping
structures; supergene oxide mineralization has
developed over the structures close to surface.
The primary mineralization is strata-bound with
lineation’s identified as controlling higher-grade
shoots. The deposit is oxidized to average depths
of 50-70m.
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 _
No exploration results have been reported

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Page 14 of 21

Criteria JORC Code explanation Commentary
o 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,
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.
In the drilling from 2016, in the ore zone four
separate fire assays were completed for each 1m
sample to reduce the nugget effect. The four
assays were then averaged to calculate the final
assay grade. In the drilling prior to 2016, single
fire assays were completed on each sample.
Relationship
between
mineralisation
widths
and
intercept
lengths
These relationships are
particularly important 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.
If it is not known and only the
down hole lengths are reported,
there should be a clear
statement to this effect (e.g.
‘down hole length, true width not
known’).
At Bibra, the geometry of the mineralisation has
already
been
defined
from
previous
drilling
programs. The intersection angle between drill
angle and the perpendicular angle to the ore zone
is less than 10 degrees.
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.
The diagrams in the report provide sufficient
information to understand the context of the
drilling results.
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.
The accompanying document is considered to be a
balanced report with a suitable cautionary note.
Other
substantive
exploration
Other exploration data, if
meaningful and material, should
be reported including (but not
Systematic metallurgical testwork programs over
2012/13 on master and variability composites
from diamond core identifies mineralisation as

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Page 15 of 21

Criteria JORC Code explanation Commentary
data 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.
free milling and amenable to cyanidation
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).
Diagrams clearly highlighting the
areas of possible extensions,
including the main geological
interpretations and future drilling
areas, provided this information
is not commercially sensitive.
A program of RC and DDH is planned to
commence shortly to infill the current drilling to
upgrade the resource to the next level of
classification

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.
Data validation procedures
used.
Data from the latest drilling was collected in the
field by geologists and field assistants using
Micromine’s Field Marshall program with in-built
Validation. Once hole information was finalised on
site the information was emailed to the Database
Administrator in Perth to load into Datashed SQL
database.
Prior to 2014, data are collected by the geologists
and field staff in either Excel spreadsheets or
acQuire data entry objects on laptops for RC and
diamond drilling and loaded into SQL acQuire
software.
Prior to completing the latest drill program the
inherited validated data from IGO was imported
into
a
Datashed
SQL
database
by
Maxwell
Geoscience.
Analytical data was received from the laboratories
in electronic ASCII files of varying format, and
were merged with sampling data already present in
the database.
Assays received from laboratories were imported
by the Database Administrator into the database.
Any data files which did not validate were
investigated and rectified by field staff or Database
Administrator
Site visits Comment on any site visits
undertaken by the Competent
Person and the outcome of those
visits.
 _If no site visits have been _
Site
visits
by
the
Competent
Person
were
conducted on the 5th and 6th of April 2016, during
the drilling program. While the competent person
was on site they scrutinized the method of RC
sample
capture
and
sampling,
site
set
up,

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Page 16 of 21

Criteria JORC Code explanation Commentary
undertaken indicate why this is
the case.
adherence to sampling and geological logging
protocols, housekeeping and QAQC.
Geological
interpretatio
n
Confidence in (or conversely, the
uncertainty of) the geological
interpretation of the mineral
deposit.
Nature of the data used and of
any assumptions made.
The effect, if any, of alternative
interpretations on Mineral
Resource estimation.
The use of geology in guiding
and controlling Mineral Resource
estimation
The factors affecting continuity
both of grade and geology.
Confidence in the geological interpretation is
moderate,
given
the
wide-spaced
drilling.
Stratigraphy seems consistent in that it can be
correlated between holes and along strike. It is
expected that refinements to the geological model
will be made with increased density of drilling.
Drillholes are wide-spaced and as such the
interpretation has been kept simple. Geological
logging
and
structural
measurements
from
drillholes has been used to construct the geological
model
and
northern
fault.
Sections
were
interpreted, digitised and a 3D wireframe model
constructed. Geological continuity has been
assumed along strike and down-dip.
The interpretation will evolve as drilling spacing
decreases and more information becomes available
for modelling, however the overall impact on
Mineral Resources is expected to be low. It is
unlikely that an alternative interpretation will
develop. There is currently sufficient drilling to
broadly map the stratigraphic units and the
supergene zone.
The geological model has been used to guide
mineralisation
envelopes
and
subsequent
mineralisation
wireframe
modelling.
The
interpreted fault zone in the north end has
disrupted the stratigraphy and the mineralisation
model was built to conform with the geological
model.
Geological continuity has been assumed along
strike and down-dip based on reasonably 50m x
50m drilling data. Factors that might affect
continuity are that with closer-spaced drilling the
geological model could become more complex. In
general, continuity both geologically and grade-
wise within a 0.3ppm shell is good. Grades and
thickness are more consistent down-dip than along
strike.
Dimensions The extent and variability of the
Mineral Resource expressed as
length (along strike or
otherwise), plan width, and
depth below surface to the upper
and lower limits of the Mineral
Resource.
The Bibra mineralisation wireframes have been
projected down-dip based on wider spaced drilling
intercepts; however, this extrapolation has been
removed from the resource estimate by limiting the
reported tonnes and grade to within a conceptual
optimal pit shell ($1750/oz Au). The supergene
zone modelled was 900m along strike and 230m
wide in the NE widening to 560m in the southern
half. It ranges from 1.7m to 14m in vertical
thickness.
The primary mineralisation extends below the
supergene zone for a further vertical depth of
270m.
The transition/fresh rock boundary is about 60m
below surface. The primary mineralisation has 4
main sub-parallel zones and several smaller zones.
The main zone is 900m long (N-S) and 980m wide
(horizontal width)at its widestpart in the north,

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Page 17 of 21

Criteria JORC Code explanation Commentary
tapering to 300m wide (horizontal width) at the
southern end. Note that only a portion of this
mineralisation has been classified as resource (i.e.
that portion within the region defined by the 50m x
50m spaced drilling or closer, and within the
conceptual optimal pit shell). The thickness of the
main primary mineralisation zone ranges from
1.7m vertical thickness to 30m in the thickest part.
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.

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 assumptions made
regarding recovery of by-
products.

Estimation of deleterious
elements or other non-grade
variables of economic
significance (eg sulphur for acid
mine drainage
characterisation).

In the case of block model
interpolation, the block size in
relation to the average sample
spacing and the search
employed.

Any assumptions behind
modelling of selective mining
units.

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
reconciliation data if available.
Higher grade wireframe domains were built for
mineralisation above 1.0g/t Au in the supergene
zone and 1.5g/t Au in the main zones in order to
constrain
the
higher
grade
portions
of
the
mineralisation.
Variography was completed in Snowden’s Visor
geostatistical program 8.6.1.
Block size, Search ellipses and discretisation and
minimum
and
maximum
samples
were
all
determined using the variogram through a QKNA
process in Visor
The block dimensions were 25mY, 10mX and 5mZ
for parent cells, sub-blocked to 6.25mY, 2.5mX and
1.25mZ.
Ordinary Kriging was used for grade estimation
utilising Surpac software v6.6.2.
Grade estimation was constrained to blocks within
each of the mineralisation wireframes.
The
major
direction
search
distance
in
the
supergene mineralisation was 65m. In the primary
mineralisation the major search distance was 65m
for pass 1 and 130m for pass 2 and 260m for the 3
pass. The search direction for the main zones of
mineralisation was -20->280°. The main search
direction of the super gene was 000->280°. These
search direction was developed from variographic
and geological analysis.
The maximum number of samples used for grade
interpolation was 36 with a min 6 for the first pass,
reducing to a minimum of 3 samples for the second
pass and 1 sample for the third pass.
For the minimum number of drill holes for each
block to estimate, the parameters were set to a
minimum of 4 for the first pass, minimum of 2 for
the second pass and minimum of 1 for the third
pass.
This estimate compares favourably in comparison
to IGO’s 2013 inferred resource. Grades are
similar and some small local variation has occurred
in tonnes due to refinements in the wireframes
based on in the new drilling.
No mining has occurred at Bibra.
No assumptions have been made regarding by-
products
No deleterious elements are known or expected.
Anisotropic searches were employed and were

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Page 18 of 21

Criteria JORC Code explanation Commentary
based on variography.
Only Au has been modelled.
The geological interpretation was used to control
mineralisation modelling and to assign densities to
rock-types.
Top-cuts
were
established
after
a
study
of
statistics, histograms and log-probability plots for
the main domains. Domains which had CV’s above
2 were top cut, unit the CV for the domain was
below a CV of 2,. 6 samples were cut.
The block model is checked visually in Surpac and
Micromine by comparing drillhole assays with block
grades.
Swath plots are generated to compare block grades
with sample composite grades on a sectional and
plan slice basis.
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.
Core samples in the oxide zone have been
measured for density after drying and coating at an
independent laboratory. Transition and fresh rock
samples have been tested uncoated on site after
sun-drying, and added to the database of samples
tested by the independent laboratory. New
measurements in 2012 confirmed earlier density
measurements for rocktype and oxidation.
Cut-off
parameters

The basis of the adopted cut-
off grade(s) or quality
parameters applied.
The mineralisation has been wireframe modelled
using a 0.3g/t Au assay cut-off grade. The
resource estimate has been reported above a block
grade of 0.5g/t Au.
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 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.
Currently
a
medium-sized
contractor-operated
open-pit mining option is the basis for the cut-off
grade. The shallow dip precludes using large
bench heights without incurring significant dilution.
Ore and waste would be paddock blast on 5m
benches and subsequently excavated as 2.5m
flitches utilising a conventional excavator and truck
mining fleet to facilitate moderate ore excavation
selectivity. Internal dilution to 2m has been
included and external dilution has been applied to
the estimate by re-blocking to a selective mining
unit (smu) of 6.25 m x 5 m x 2.5 m.
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
Systematic metallurgical testwork programs over
2012/13 were completed by IGO on master and
variability composites from diamond core identifies
mineralisation as free milling and amenable to
cyanidation. Adoption of a conventional gravity
and carbon in-leach process circuit design is likely
to yield gold recoveries in the low 90%’s for both
fresh and oxide material.
The leach rates improved considerablyin the Pre-
Page 19 of 21
Criteria JORC Code explanation Commentary
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.
Feasibility Study testwork with the addition of
gravity recovery to the flowsheet, with the gravity
gold component being measured at between 34-
53% for the Fresh mineralisation and 19-62% for
the
oxide
mineralisation.
Physical
testwork
indicates bond work indices of 13kWh/t to 20KWh/t
and low to moderate abrasion indices.
Environment
al 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.
Waste rock from open pit operations would be
placed in a waste rock landform adjacent to open
pit
operations,
progressively
contoured
and
revegetated throughout mine life. Process plant
residue would be disposed of in a surface tailings
storage facility (TSF). Adoption of an upstream,
central decant design would utilise mine waste
material for dam wall construction and facilitate
water recovery to supplement process water
requirements. It is expected that sufficient
volumes of oxide material, able to be made
sufficiently impermeable, will be available in the
overburden stream to enable acceptable TSF
construction.
Geochemical testwork on mineralised and non-
mineralised waste regolith and bedrock samples
indicates the material to be non-acid forming.
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.

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.

Discuss assumptions for bulk
density estimates used in the
evaluation process of the
different materials.
Densities were based on measured densities sorted
by rock type and oxidation state. Outliers were
removed
and
remaining
measurements
were
averaged for each rock type and oxidation state
domain. In the 2012 core drilling program, all
samples sent for analysis from the transition or
fresh rock zones were density measured. Density
determination by the water immersion method. The
density
database
has
a
total
of
1585
measurements for Bibra
Densities measured at the independent laboratory
accounted for void spaces and moisture. Densities
measured by IGO were in competent core that was
sun-dried but uncoated. Natural moisture in the
competent core is expected to be low. On-site
testing in future will use improved methods and
equipment. As noted above, rock type and
oxidation state were the main divisors for density
measurements and application to the block model
No assumptions have been made for bulk density
estimates. Bulk densities assigned to the block
model are based on measured data
Classification
The basis for the classification
of the Mineral Resources into
varying confidence categories.
The Inferred classification reflects the relative
confidence in the estimate, the wide-spaced drilling
input data,the assayrepeatabilityand the

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Page 20 of 21

Criteria JORC Code explanation Commentary

Whether appropriate account
has been taken of all relevant
factors (ie 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).

Whether the result
appropriately reflects the
Competent Person’s view of the
deposit.
assumed continuity of the mineralisation.
The inferred mineralisation was further constrained
to a $1750/oz AUD conceptual optimal pit shell.
The remainder of the modelled mineralisation does
not form part of the current resource estimate.
The conceptual optimal pit shell has a pit base at
240m below surface
The
classification
as
Inferred
reflects
the
Competent Person’s view of the deposit.
Audits
or
reviews

The results of any audits or
reviews of Mineral Resource
estimates.
The resource model has been reviewed for fatal
flaws internally.
Discussion of
relative
accuracy/con
fidence

• 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
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.

These statements of relative
accuracy and confidence of the
estimate should be compared
with production data, where
available.
The confidence level is reflected in the Inferred
classification of the estimate.
Mineralisation modelled but outside the criteria
used for classification as Inferred has been
excluded from the estimate. Potential for upgrading
the classification exists if closer spaced holes are
drilled, continuity is proven, and RC sampling
issues and assay repeatability are addressed.
The Mineral Resource estimate is an undiluted
global estimate.
There is no production data to compare the
resource estimate with, as Bibra has not been
mined.

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