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CONICO LTD Capital/Financing Update 2019

Feb 14, 2019

64678_rns_2019-02-14_28a0fde7-3da9-4a58-b329-ee821e773995.pdf

Capital/Financing Update

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ASX ANNOUNCEMENT 15[th] February 2019

BARRA RESOURCES LIMITED

A.B.N. 76 093 396 859

Corporate Details: ASX Code: BAR Market Cap: $18.6M @ 3.5c Cash: $2.3M (Dec)

Issued Capital: 530.89M Ordinary Shares 50M Options

Substantial Shareholders:

FMR Investments 15.4% Mineral Resources Ltd 10.8%

DIRECTORS

MD & CEO: Sean Gregory Chairman: Gary Berrell Non-Exec: Jon Young Non-Exec: Grant Mooney

PROJECTS

Mt Thirsty Co-Ni (50%) Coolgardie Au (100%)

CONTACT DETAILS

www.barraresources.com.au [email protected]

Ground Floor, 6 Thelma St West Perth, WA 6005 T: (08) 9481 3911

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EXTRACTIONS SURGE IN MT THIRSTY TESTWORK

HIGHLIGHTS

  • Significant improvements in metal extractions returned from leach optimisation test work on the master composite compared to those reported in the Scoping Study

  • Average cobalt leach extraction improved to 85% with some results as high as 88%

  • Average nickel leach extraction improved to 32% with some results as high as 37%

  • Commensurately higher project revenues expected to be available for minimal additional reagents and costs

  • Cobalt and nickel extractions were achieved on whole ore and therefore do not have to allow for additional losses from beneficiation

  • The extractions were achieved using modest quantities of SO2 for leaching without requiring the addition of supplemental acid

  • Neutralisation tests show that iron and aluminium can be effectively precipitated after leaching prior to payable metals

  • Engineering to enable capital estimation to a PFS level of accuracy scheduled to commence subject to JV funding

Barra’s Managing Director and CEO Sean Gregory said “These high-quality technical results are expected to significantly improve the economics of the Mt Thirsty project. They will go a long way to mitigate the present temporary dip in cobalt spot pricing. The long-term outlook for cobalt remains strong as an essential and scarce ingredient for batteries to fuel the electric vehicle revolution.”

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Figure 1 – Mt Thirsty Project location

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Introduction

The Mt Thirsty Cobalt Nickel Project is located 16km northwest of Norseman, Western Australia (Figure 1). The project is jointly owned by Barra Resources Limited and Conico Limited, together the Mt Thirsty Joint Venture (MTJV).

The Project contains the Mt Thirsty Cobalt-Nickel Oxide Deposit that has the potential to emerge as a significant cobalt producer.

The MTJV is progressing a Pre-Feasibility Study (PFS) on the project utilising industry leading consultants led by Amec Foster Wheeler Australia Pty Ltd, trading as Wood.

Sample Collection

The test work reported here has been completed on samples made up from Reverse Circulation (RC) drill samples from six holes collected in November 2016 (Table 1, refer ASX Quarterly Report for December Quarter 2016). The PFS master composite was made up of a blend of approximately half upper-saprolite domain (upper) and half lower-saprolite domain (lower) at grades representative of the most important early years of the mine plan. These are the same drill holes blended ostensibly at the same ratios as those used in the master composite of the Scoping Study, making these reported results directly comparable.

Hole ID Date Drilled Easting Northing RL (m) Depth
(m)
Composite
Intervals (m)
MTRC036 20/11/2016 372162 6447455 378 54 18-42
MTRC037 19/11/2016 372244 6447455 376 30 13-30
MTRC038 19/11/2016 372349 6447457 369 35 14-28
MTRC039 20/11/2016 371956 6447000 382 40 14-34
MTRC040 20/11/2016 372115 6447001 393 40 30-36
MTRC041 20/11/2016 372295 6446999 381 35 23-32

Table 1 – Drill holes used in the sample composites. All holes are vertical. Grid AGD84 Zone 51

Variability Test Work

Following on from the leaching test work on the individual upper and lower domain composites previously reported (refer ASX announcement 22/10/19), the next layer of variability was tested samples with a range of grades from each domain. The results in Table 2 illustrate that extraction can be correlated with feed grade in the range tested. This is consistent with the higher-grade samples having higher concentrations of the more easily leached asbolane mineral and the lower grade samples having more of the cobalt in the less easily leached goethite mineral. Note that these results are using the leaching parameters of the Scoping Study and are without the parameter optimisations achieved in Table 3.

Test ID Sample Source Domain Cobalt
Feed Grade
(%)
Cobalt
Extraction
(%)
Nickel
Extraction
(%)
Cobalt
Residue
Grade (%)
HY6797 MTRC038 15-16m Upper Medium-Grade 0.16 61 29 0.067
HY6795 MTRC036 25-26m Upper Low-Grade 0.09 73 24 0.028
HY6800 MTRC041 24-25m Lower High-Grade 0.21 83 30 0.043
HY6796 MTRC036 36-37m Lower Medium-Grade 0.12 63 22 0.039
HY6934 MTRC038 25-26m Lower Low-Grade 0.09 54 20 0.047

Table 2 – Variability leach results

Barra Resources Ltd | ASX Announcement Page 1

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QEMSCAN Analysis

QEMSCAN analysis was completed on the master composite sample. QEMSCAN is the quantitative evaluation of minerals using a fully automated scanning electron microscope. The technique is a very powerful tool to link the geological knowledge of the deposit to the metallurgical performance. It can be used to explain and predict observed results. The QEMSCAN results provide a wealth of information that has reaffirmed the reasons for the beneficiation performance previously reported (refer ASX announcement 22/10/18).

One specific observation from the QEMSCAN analysis that is relevant to the leaching optimisation is that 62% of the cobalt is present in manganese mineral (asbolane) which is readily leached with SO2 (Figure 2). The remainder of the cobalt and most of the nickel is in the harder to leach goethite mineral. Lower nickel extractions are explained by 44% of the nickel being in the chlorite mineral which is not leached by the methods studied. Two separate reactions will be required to target the asbolane and the goethite. The Scoping Study results align with successfully leaching the asbolane and only a small proportion of the goethite. The opportunity in the PFS and in the leaching optimisation test work reported below are to:

  • Leach the asbolane as rapidly and efficiently as possible; and

  • Target the secondary nickel and cobalt mineralisation in goethite with minimal iron dissolution.

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Figure 2 – QEMSCAN elemental deportment for Cobalt and Nickel

Barra Resources Ltd | ASX Announcement Page 2

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Leaching Optimisation Test Work

An additional 22 leach optimisation tests have been completed to date at ALS laboratories in Balcatta, bringing the total for the PFS to 35 tests. The results are an improvement on the variability samples reported above on unoptimised conditions as evident by the lower residue grades shown in Table 3.

The leaches optimised parameters such as SO2 and other reagent addition rates, temperature, grind size, and residence times, with incremental improvements identified as the tests progressed.

Test ID Cobalt Extraction (%) Nickel Extraction (%) Cobalt Residue Grade
(%)
HY6884 81 31 0.040
HY6947 83 28 0.032
HY6933 86 31 0.029
HY6976 84 32 0.032
HY6977 84 28 0.030
HY7035 88 36 0.025
HY7036 82 27 0.035
HY7067 85 32 0.031
HY7132 85 29 0.030
HY7142 86 35 0.028
HY7143 86 33 0.028
HY7154 84 29 0.032
HY7155 88 37 0.024
HY7200 88 35 0.023
HY7201 83 31 0.034
HY7233 87 33 0.027
HY7234 84 29 0.031
HY7285 85 32 0.031
HY7286 88 35 0.025

Table 3 – Significant leach optimisation test work results (>81%Co & >27%Ni)

Optimised extractions have been consistently achieved of 84-88% for cobalt and 31-37% for nickel. These results are a significant improvement to those recoveries achieved on a similar sample and used as a basis for the 2017 Scoping Study.

Neutralisation test work

The secondary leach reactions that target the goethite extract iron and aluminium in addition to manganese, cobalt, and nickel. The iron and aluminium need to be removed from the circuit prior to cobalt and nickel recovery which can lead to co-precipitation losses during neutralisation. Initial neutralisation test work has however indicated that with careful control of pH and additional reagent dosing, the iron and most of the aluminium can be precipitated ahead of the payable metals without co-precipitation (Figure 3).

Barra Resources Ltd | ASX Announcement Page 3

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Figure 3 – Neutralisation test HY7252 showing successful precipitation of iron and aluminium ahead of payable metal precipitation at pH 2.4-2.6

Cobalt Market Outlook

The price for cobalt metal has corrected over the last 12 months from a high of US$90,000/t in March to US$33,000/t today. This has been due to short term supply exceeding demand as evident by LME warehouse levels which are now at their highest level in 7 years, since Info-mine began tracking cobalt then. The supply growth has been led by producers from the Democratic Republic of Congo, increasing their dominance of the market to above 70% and further exacerbating future supply shock risk.

Speculators had been purchasing and stockpiling physical cobalt in expectation of the electric vehicle (EV) revolution. EV sales are growing exponentially from a low base, particularly in China, however the mass adoption of EVs is still ahead of us. When this inevitably occurs, supply growth will be unable to keep pace with demand. Hence the rampant speculation that saw the cobalt price unsustainably rise this time last year.

Substitution away from Cobalt through the adoption of 811 cathode chemistry (8-parts nickel, 1-part manganese, 1-part cobalt) to displace 622 cathodes has proved more difficult than major battery manufacturers forecast. Even if this thrifting away from cobalt can be safely implemented, the demand growth is still forecast to significantly outstrip supply. The challenges of 811 cathode chemistry highlight the difficultly of technological change disrupting the need for cobalt in batteries within any reasonable investment time frame.

The recent correction of the cobalt price has been sharper than forecasts issued by all major banks as reported by Consensus Economics. Longer term, the fundamentals of the cobalt market remain exceptional with very few high-quality projects such as Mt Thirsty being expected to be available to meet the demand driven by EVs.

Barra Resources Ltd | ASX Announcement Page 4

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Next Steps

Bulk leach test work will now commence. The completion of the bulk leaches will confirm the results of the optimisation and neutralisation tests reported above and form the basis for the PFS design. The bulk leach will also manufacture samples for thickening and tailings test work.

The leaches completed to-date have been conducted on a master composite consisting of a 50/50 blend of upper and lower domains from previous RC drilling chosen to be representative of the early years of mining. The upper domain is known to have superior leach performance to the lower domain from leaches conducted during the beneficiation vs whole ore leach study (refer ASX announcement 22[nd] October 2018). The optimised leach extraction performance from the master composite will need to be deconvoluted into upper and lower performance for mine planning, initially by calculation, and then by tests on each domain at the optimised leaching conditions.

The results of this next step will also allow metallurgical regressions to be constructed to be combined with the imminent JORC 2012 upgraded Mineral Resource estimation to be used for mine planning and optimisation which is expected to unlock further significant value for the project.

Engineering of the processing plant, and capital and operating cost estimating to a PFS level of accuracy at optimised conditions is now ready to commence subject to funding approval by the JV, anticipated to be released in the current quarter.

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________

SEAN GREGORY

Managing Director & CEO

Barra Resources Ltd | ASX Announcement Page 5

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DISCLAIMER

The interpretations and conclusions reached in this report are based on current geological and metallurgical theory and the best evidence available to the authors at the time of writing. It is the nature of all scientific conclusions that they are founded on an assessment of probabilities and, however high these probabilities might be, they make no claim for complete certainty. Any economic decisions that might be taken based on interpretations or conclusions contained in this report will therefore carry an element of risk.

This report contains forward-looking statements that involve a number of risks and uncertainties. These forward-looking statements are expressed in good faith and believed to have a reasonable basis. These statements reflect current expectations, intentions or strategies regarding the future and assumptions based on currently available information. Should one or more of the risks or uncertainties materialise, or should underlying assumptions prove incorrect, actual results may vary from the expectations, intentions and strategies described in this report. No obligation is assumed to update forward-looking statements if these beliefs, opinions and estimates should change or to reflect other future developments.

COMPETENT PERSONS STATEMENTS

The information in this report which relates to the drilling and collection of samples for Exploration Results for the Mt Thirsty Project is based on and fairly represents information compiled by Mr Michael J Glasson who is a Member of the Australian Institute of Geoscientists contracted to Conico Limited. Mr Glasson holds shares in Conico Ltd.

The information in this report which relates to the metallurgical test work for Exploration Results for the Mt Thirsty Project is based on and fairly represents information compiled by Mr Karel Osten who is a Member of the Australian Institute of Mining and Metallurgy and a full-time employee of Wood.

Messers Glasson and Osten have sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking to qualify as Competent Persons as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves” (the JORC Code). They consent to the inclusion in the report of the matters based on their information in the form and context in which it appears.

JORC CODE, 2012 EDITION – TABLE 1 REPORT

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 (eg 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 (eg ‘reverse
circulation drilling was used to obtain 1 m samples
from which 3 kg was pulverised to produce a 30 g
charge for fire assay’). In other cases more
explanation may be required, such as where there is
coarse gold that has inherent sampling problems.
Unusual commodities or mineralisation types (eg
submarine nodules) may warrant disclosure of
detailed information.

1m samples were split and collected at the drill rig.

The
remainder
of
the
drill
cuttings
were
immediately bagged and sealed in air tight bags to
minimise drying and agglomeration of the clays.
These samples were later used for compositing
and metallurgical test work.

The split samples were then dried and pulverised
and a 40gm sub sample analysed for Co, Ni, Mn,
Zn, Mg, Al & Fe using a four-acid digest with an ICP
OES finish.
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).

RC drilling was completed with a 165mm face
sampling hammer.

All drilling was above the water table and there was
no water injection used.

Barra Resources Ltd | ASX Announcement Page 6

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Criteria JORC Code explanation Commentary
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.

Sample recovery was generally excellent in dry
powdery clay which hosts the upper portion of the
mineralisation. Any intervals with obvious poorer
sample recovery were recorded in the logs. These
were mostly in greenish puggy clay sections
beneath the oxidised zone in the lower portion of
the deposit.

The cyclone was cleaned between each six metre
rod (RC); riffle splitters were cleaned as required.
There is no obvious relationship between grade
and sample recovery. Most of the material drilled is
strongly weathered, soft and fine grained. No
significant sample bias is expected to have
occurred due to preferential loss of fine/coarse
material.
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.

Logging is conducted in detail at the drill site by the
site geologist, who routinely records weathering,
lithology, alteration, mineralisation, or any other
relevant features. It is considered to be logged at a
level of detail to support appropriate Mineral
Resource estimation and mining studies.

All holes were logged in the field by MTJV
geologists who have a long association and
familiarity with the deposit.

Logging is qualitative in nature.

The entire length of each hole was logged in 1m
intervals.
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.

All RC drill chips were split with a rotary splitter. The
remaining sample was bagged and placed on the
ground.

Sample preparation followed industry standard
practice of drying, coarse crushing to -6mm, before
pulverising to 90% passing 75 micron.

To meet QAQC requirements duplicates were
placed at irregular intervals in the sample stream,
usually one or two duplicates per drill hole
(approximately every 20-40m). For the RC drilling
certified blanks (OREAS 24P) were placed in the
sample stream at the rate of 1 in 100, at each
hundredth sample. Additionally, two different
certified standards were used in the sample stream
(OREAS 72A and OREAS 162) at the rate of 2
standards per 100 samples. These were placed at
the 25th and 75th number of every hundred
samples.

The Co values in the blank samples were higher
than the provided values however they are below
80 ppm; comparatively low compared to the
estimated resource values and therefore within
acceptable ranges for blank samples. Overall there
were only a small number of outliers in the
duplicates collected and therefore the duplicate
results are also considered satisfactory.

Material being sampled is generally fine grained,
and a 2-3kg sample from each metre is considered
adequate.
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 (eg
standards, blanks, duplicates, external laboratory
checks) and whether acceptable levels of accuracy (ie
lack of bias) and precision have been established.

Samples were crushed and pulverised, and
analysed for Co, Ni, Mn, Zn, Mg, Al & Fe using a
four acid digest with an ICP OES finish (method
AD02-ICP) by Bureau Veritas’ Perth laboratory.
These procedures are considered appropriate for
the elements and style of mineralisation. Analysis
is considered total.

No geophysical tools have been used.

The internal laboratory QAQC procedures included
analysing its own suite of internal standards and
blanks within every sample batch and also adding
sample duplicates.
Verification of
The verification of significant intersections by either
independent or alternative company personnel.

Significant
intersections
are
determined
by
company personneland checkedinternally.

Barra Resources Ltd | ASX Announcement Page 7

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Criteria JORC Code explanation Commentary
sampling and
assaying

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.

A limited number of twinned RC holes and AC holes
twinned by Sonic Core (SC) holes have been
drilled. 5 of the 6 RC holes and the 3 AC holes are
twins previous AC holes. Analysis of paired data
representing AC and SC samples with proximity of
approximately 5 m or less has given at least
preliminary indications that some AC samples are
yielding
higher
Co
and
Mn
values
than
corresponding
samples
derived
from
SC.
Population statistics however show the reverse and
AC statistics are slightly lower grade on average
than RC and SC.

Individual sample numbers are generated and
matched on site with down hole depths. Sample
numbers are then used to match assays when
received from the laboratory. Verification of data is
managed and checked by company personnel with
extensive
experience.
All
data
is
stored
electronically, with industry standard systems and
backups.

Data is not subject to any adjustments.
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.

Collar locations were determined by hand held
GPS and are accurate to approximately +/- 5m.

The grid system used is AGD84; AMG Zone 51 to
match a previously established grid. A DTM and
2.5m spaced topographic contours have been
prepared from ortho-photomaps and hole RLs are
measured from these. This topographic control is
considered
quite
adequate
for
the
current
purposes.
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.

All holes were sampled and assayed in 1m intervals
and no other compositing has been applied during
sample
collection
and
assay
laboratory
preparation.
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.

The mineralisation is mostly contained within a flat
lying weathering blanket and vertical holes achieve
unbiased sampling in most cases.

The mineralisation is mostly contained within a flat
lying weathering blanket and vertical holes achieve
unbiased sampling in most cases.
Sample
security

The measures taken to ensure sample security.

Samples were either taken directly from the drill site
to the laboratory in Kalgoorlie or delivered to a
dedicated cartage contractor in Norseman by
company employees and or contractors.
Audits
or
reviews

The results of any audits or reviews of sampling
techniques and data.

No audits or reviews were carried out for this
metallurgical drilling as it is not considered
warranted at this stage.

Section 2 Reporting of Exploration Results

(Criteria listed in the preceding section also apply to this section.)

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 exploration results relate to the Mt Thirsty
Project, located approximately 16km north west of
Norseman, Western Australia. The tenements are
owned 50:50 (Mt Thirsty Joint Venture, MTJV) by
Conico Ltd (through its subsidiary Meteore Metals Pty
Ltd) and Barra Resources Ltd. The project includes
Retention Licence R63/4, Exploration Licences
E63/1267, and E63/1790 and Prospecting Licence
P63/2045. Mining Lease applications have been
lodged over R63/4 and E63/1267 and a General

Barra Resources Ltd | ASX Announcement Page 8

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Criteria JORC Code explanation Commentary
Purpose Lease application over E63/1790 and
P63/2045. The exploration results referred to in this
announcement are located on R63/4.

A NSR royalty is payable to a third party on any
production from R63/4. The tenements lie within the
Ngadju
native
title
claim
(WC99/002),
and
agreements between the claimants and the tenement
holders are designed to protect Aboriginal heritage
sites and facilitate access. There are no historical or
wilderness sites or national parks or known
environmental settings that affect the Mt Thirsty
Project although the project area is located within the
Great Western Woodlands.

Meteore/Barra have secured tenure over the project
area and there are no known impediments to
obtaining a licence to operate in the area.
Exploration done
by other parties

Acknowledgment and appraisal of exploration
by other parties.

The Mt Thirsty area was explored for nickel sulphide
mineralisation in the late sixties and early seventies
by Anaconda, Union Miniere, CRA, WMC/CNGC and
others. Although no significant sulphide discoveries
were made during that time, limonitic nickel/cobalt
mineralisation was encountered but not followed up.
In the 1990’s Resolute-Samantha discovered high
grade cobalt mineralisation in the oxidised profile
above an orthocumulate peridotite. This oxide
mineralisation is the subject of this announcement.
Geology
Deposit type, geological setting and style of
mineralisation.

The Mt Thirsty Cobalt deposit mineralisation has
developed as a result of weathering of ultramafic
(peridotite) rocks located at the southern end of the
Archaean Norseman - Wiluna greenstone belt. Most
of the Co and some of the Ni mineralisation is
associated with manganese oxides which have
formed in the weathering profile.
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.

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.

See table in main body of announcement
Data aggregation
methods

In reporting Exploration Results, weighting
averaging
techniques,
maximum
and/or
minimum grade truncations (eg 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.

Not applicable.

No equivalent values are used.
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 (eg‘down hole length, true width not

As the mineralised envelope is generally flat lying and
nearly all holes were drilled vertically; down hole
width is mostly considered to be true width.

Barra Resources Ltd | ASX Announcement Page 9

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Criteria JORC Code explanation Commentary
known’).
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.

All diagrams contained in this document are
generated from spatial data displayed in industry
standard mining and GIS packages.
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.

Not applicable.
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.

The
leach
composite
sub-samples
were
approximately 850g on a dry solids basis mixed at
40% solids with synthetic hypersaline water. SO2was
the main reagent used and no acid was added.
Leaches were conducted at temperatures ranging
from 60-90 degrees C for 16-30 hours.

Leach extraction results are reported as an arithmetic
average of the recoveries computed as metal in
residue vs feed and as metal in solution vs calculated
head grade.

Leach extraction results are reported prior to losses
expected in solution neutralisation and precipitation.
For the Scoping Study, final product recoveries of
73.0% for cobalt and 21.5% were calculated from
leach extractions of 79.5% and 25.6% respectively.
For the PFS, losses of less than 4% are targeted
subject to test work outcomes.
Further work
The nature and scale of planned further work (eg
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.

The Mt Thirsty deposit is presently the subject of a
PFS.

Further test work will include bulk leaches. thickening
and solid-liquid separation tests, tailing test work as
well as additional variability leaches.

Golders has been commissioned to upgrade the
Mineral Resource from JORC 2004 to JORC 2012 to
enable an Ore Reserve to be declared at the
completion of a positive PFS.

Barra Resources Ltd | ASX Announcement Page 10