Jupiter Metallurgical Testwork Advances Gallium & Scandium
Released
Released
Announcement PDF
ASX Announcement
9 November 2026 | ASX: CRI
CRITICA LIMITED
Level 2, 16 Altona Street,
West Perth, Western
Australia ABN 51 119 678 385
T: +61 8 6279 9428
E: admin@critica.limited
critica.limited
JUPITER ADVANCES GALLIUM AND SCANDIUM BY-
PRODUCT POTENTIAL
Metallurgical testwork achieves up to 92% gallium and 85% scandium extraction1
advancing potential value streams2
not included in Jupiter’s A$2.0 billion NPV₈
Scoping Study Base Case.
Critica Limited (ASX: CRI) (“Critica” or the “Company”) is pleased to report significant progress in its
assessment of the potential recovery of gallium and scandium as by-products from its 100%-owned Jupiter
Rare Earth Elements Project (“Jupiter” or the “Project”) in Western Australia.
1
These extraction results represent the proportion of gallium and scandium transferred into solution
during the leach process and do not represent final product recoveries. Downstream recovery from the
pregnant leach solution is the focus of the next stages of testwork.
2
References to gallium and scandium by-product potential, recovery pathways, potential value streams
and similar comments are aspirational and do not imply economic viability. Critica does not yet have
reasonable grounds to believe the aspirational statements can be achieved.
Jupiter Highlights
• Up to 91.9% gallium and 84.7% scandium extraction achieved from
Jupiter metallurgical testwork, materially advancing the potential recovery
pathway for both strategic metals.2
• Gallium extraction materially improved from ~63% previously reported.
• Substantial gallium and scandium endowment: Jupiter’s 160 Mt
Indicated Resource contains ~6,400t Ga₂O₃ and ~7,200t Sc₂O₃, while the
1.5 Bt Inferred Resource contains ~60,000t Ga₂O₃ and ~54,000t Sc₂O₃,
based on reported rounded tonnages and grades.
• Gallium and scandium report to the PLS alongside rare earth elements,
with downstream resin adsorption testwork underway to assess selectivity
and potential recovery of separate gallium and scandium products.
• Jupiter Scoping Study delivered ~A$2.0 billion after-tax NPV₈, with no
value attributed to gallium or scandium.
• Gallium and scandium are both critical minerals with strategic
applications across advanced technologies, energy and defence.
2
Recent metallurgical testwork using Jupiter’s hydrometallurgical process has achieved gallium extraction
of up to 91.9% and scandium extraction of up to 84.7%, with both metals reporting to the pregnant leach
solution (PLS) alongside the rare earth elements, materially advancing the potential recovery pathway for
both strategic metals.
The results build on Jupiter’s existing Mineral Resource, which includes gallium and scandium within both
its Indicated and Inferred classifications. Importantly, no value is currently attributed to either gallium or
scandiumintheJupiter ScopingStudyBaseCase,whichdeliveredanafter-taxNPV₈of approximatelyA$2.0
billion.
Critica’s CEO Jacob Deysel commented:
“These results represent an important step in assessing the potential for additional value from Jupiter.
Importantly, gallium and scandium are being extracted into solution alongside the rare earth elements,
providing a basis for further investigation of two strategically important critical minerals used across
advanced technologies, energy and defence.
Our focus now is on downstream testwork to better understand resin loading, selectivity and separation,
and assess whether gallium and scandium could ultimately contribute additional value from Jupiter.2
”
Gallium and Scandium at Jupiter
Gallium and scandium occur within Jupiter’s existing Mineral Resource and are not reported as separate
standalone Mineral Resources. These metals represent potential strategically important by-product
opportunities alongside the Project’s primary rare earth development pathway.
Table 1: Gallium and Scandium Content within the Jupiter Mineral Resource
Classification
Mineral
Resource
Ga₂O₃
Grade
Contained
Ga₂O₃¹
Sc₂O₃
Grade
Contained
Sc₂O₃¹
Indicated 160 Mt 40 ppm ~6,400 t 45 ppm ~7,200 t
Inferred 1.5 Bt 40 ppm ~60,000 t 36 ppm ~54,000 t
¹ Contained Ga₂O₃ and Sc₂O₃ quantities are approximate and calculated from the reported rounded Mineral Resource
tonnages and grades at the 1,000 ppm TREO cut-oD.
Importantly, Jupiter’s recent Scoping Study attributes no value to gallium or scandium in its Base Case
economics, with both identified as potential future upside subject to further mineralogical, metallurgical
and commercial evaluation, and assessment of other JORC Code modifying factors. At this stage, the
assessment of potential Gallium and Scandium by-products at Jupiter is aspirational and does not imply
economic viability. Critica does not yet have reasonable grounds to believe the aspirational statements can
be achieved. Critica will continue to progress the work required to evaluate gallium and scandium, with the
aim of generating suhicient data to support their potential inclusion in future economic studies for Jupiter.
Gallium and Scandium Extraction
As part of the acid baking and subsequent water leaching stages of the Jupiter hydrometallurgical
flowsheet, gallium and scandium are extracted into the pregnant leach solution (PLS) alongside the rare
earth elements.
These extraction results represent the proportion of gallium and scandium transferred into solution during
the leach process and do not represent final product recoveries. Downstream recovery from the PLS is the
focus of the next stages of testwork.
3
Table 2: Gallium and scandium extraction results
Test ID Ga extraction (%) Sc extraction (%)
QTC R1A 85.03 81.05
QTC R1B 85.85 82.82
QTC R1C 87.33 84.68
QTC R2A 67.78 60.90
QTC R3A 72.57 40.96
QTC R4A 84.86 72.53
QTC R5 91.93 82.15
Five of the seven tests achieved gallium extraction above 84%, while scandium extraction exceeded 80%
in four tests.
Preliminary resin adsorption testwork has commenced on the PLS, with initial results showing co-loading
of gallium, scandium and rare earth elements onto the resin. Further work will assess selectivity, elution
and downstream separation.
Metallurgical Testwork Approach
A beneficiated concentrate derived from the Jupiter QTC metallurgical composite was subjected to acid
baking and subsequent water leaching at AMML under varying operating conditions as part of ongoing
hydrometallurgical process development. Table 2 reports gallium and scandium extraction into the PLS
relative to their respective contents in the concentrate feed.
PLS from multiple tests was combined, with a portion used in preliminary resin adsorption testwork to
assess metal loading and selectivity. The remaining solution was allocated to other metallurgical
investigations.
Metallurgical Sample Source
The QTC metallurgical composite used in the gallium and scandium testwork was prepared from drill
samples sourced from within the Jupiter Mineral Resource envelope. The QTC sample is a composite of the
iron-clay mineralisation type which has formed part of ongoing bulk-flotation and hydrometallurgical test
work programs (see ASX announcements: 29 September 2025, 18 May 2026 and 4 August 2026). The iron-
clay mineralisation type is one of four dominant mineralisation types at Jupiter. The mineralisation types
occur as laterally extensive zones across areas of hundreds of metres to several kilometres throughout the
Jupiter deposit and broadly reflect mineralogical changes (zonation) of the underlying Jupiter alkaline
intrusion.
The source drill holes are listed in Table 3.
Table 3: QTC Metallurgical Drill Sample Listing
Hole ID Easting Northing RL From (m) To (m) Interval (m)
JPD002 529217 6856098 347 25.9 42.1 16.2
JPD007 529733 6854108 348 32.1 42.6 10.5
JPAC184 531495 6852846 358 8.0 44.0 36.0
JPAC186 531000 6852846 355 12.0 24.0 12.0
JPAC188 530492 6852846 353 32.0 56.0 24.0
JPAC190 530009 6852849 351 16.0 40.0 24.0
JPAC196 530491 6853348 353 20.0 40.0 20.0
JPAC199 529748 6853351 350 12.0 32.0 20.0
4
Strategic Importance of Gallium and Scandium
Gallium and scandium are strategically important critical minerals used across advanced technologies,
energy and defence, with global supply concentrated among a relatively small number of producers. The
presence of gallium and scandium at Jupiter provides Critica with the opportunity to assess whether either
metal may be recoverable as a by-product alongside the Project’s primary rare earth development pathway.
Gallium is a key input into gallium arsenide (GaAs) and gallium nitride (GaN) semiconductors used in high-
performance electronics, telecommunications, power electronics, LEDs, solar technologies and defence
applications. Global gallium supply is highly concentrated, with China accounting for more than 90% of
global refined supply.
Scandium is primarily used in high-performance aluminium-scandium alloys and solid oxide fuel cells,
with potential applications across aerospace, defence and advanced energy technologies. Global
scandium production remains small and concentrated, with China a leading producer.
Gallium and Scandium Recovery Pathway
Gallium recovery testwork has progressed to preliminary resin adsorption trials to assess adsorption
ehiciency and selectivity, with co-loading of scandium, rare earth elements and other dissolved impurities
also observed. Further testwork will evaluate resin elution, separation of gallium from co-adsorbed
elements, and subsequent purification and product development to seek to advance the gallium recovery
pathway.
The strong scandium extraction results provide the basis for progressing downstream scandium recovery
testwork, with the possibility of a recovery pathway to be further evaluated as the metallurgical program
advances.
Figure 1: Gallium and Scandium Recovery and Product Development Pathway
Simplified conceptual flowsheet illustrating the current and planned testwork stages for assessing
potential gallium and scandium recovery from Jupiter mineralised material.
Notes:
1. Gallium and scandium are extracted into the pregnant leach solution (PLS) during leaching.
2. Preliminary resin adsorption testwork has commenced to evaluate gallium loading and
selectivity from the PLS. Co-loading of scandium, rare earth elements and other dissolved
impurities has also been observed.
5
3. Further testwork will assess resin selectivity, followed by elution, separation and purification to
aim to advance the gallium recovery pathway toward production of a final gallium product.
4. Downstream scandium recovery and product development will also be evaluated to assess
whether a technically achievable recovery pathway can be established following the strong
scandium extraction results achieved.
5. The conceptual flowsheet and related comments are aspirational, and Critica does not yet have
reasonable grounds to believe the aspirational statements can be achieved.
The flowsheet is conceptual and remains subject to ongoing metallurgical testwork and optimisation.
Next Steps
Critica’s ongoing metallurgical program will focus on further assessing the potential downstream recovery
of gallium and scandium following the successful extraction results achieved to date.
Planned work includes:
• Completing gallium resin adsorption testwork to assess resin loading and selectivity from
solution;
• Evaluating gallium separation, purification and product development;
• Progressing downstream scandium recovery testwork; and
• Integrating the results into the broader Jupiter process flowsheet and development program.
Authorised by the Board of Critica Limited.
6
BUILDING A CRITICAL MINERALS PLATFORM
RARE EARTHS | YTTRIUM | GALLIUM | SCANDIUM | TIN | TUNGSTEN
Cri4ca Limited (ASX: CRI) is advancing two 100% owned Australian
cri5cal minerals projects supplying commodi5es used in defence,
semiconductors, ar5ficial intelligence, advanced
manufacturing and electrifica5on. Scoping Studies
completed on both projects in 2026.
The Mt Lindsay Tungsten-Tin Project in north-west
Tasmania is one of the largest undeveloped tungsten-
5n systems. Its Scoping Study modelled a 1.0 Mtpa
underground opera5on over a 13.5-year mining
schedule, returning an aIer-tax NPV8 of A$1.01 billion
and an aIer-tax IRR of 55.6% on pre-produc5on capital
of A$244.5 million, with payback of 1.9 years. The Project holds a
granted Mining Lease and is located approximately 120 km from the Port of
Burnie.
The Jupiter REE Project in Western Australia, part of Cri5ca's 100% owned Brothers landholding, is a
clay-hosted rare earths deposit containing neodymium, praseodymium, dysprosium and terbium, with gallium,
yXrium and scandium. Its Scoping Study modelled an 8.0 Mtpa opera5on producing a mixed rare earth
carbonate over a 14.3-year mining schedule, returning an aIer-tax NPV8 of A$2.0 billion and an aIer-tax IRR of
48.4% on pre-produc5on capital of A$556 million, with payback of 2.0 years.
Both projects sit in established Australian mining regions with exis5ng infrastructure, in commodi5es where
global supply and processing remain concentrated in a small number of countries.
Jacob Deysel
CEO
Critica Limited
Level 2, 16 AltonaStreet, West Perth, Western Australia
T: + 61 8 6279 9428 | admin@critica.limited | critica.limited
Investor and Media Relations
Dannika Warburton
InvestabilityPartners
investors@investability.com.au
JOIN CRITICA’S INTERACTIVE INVESTOR HUB
Sign up and engage with our investor relations team
7
COMPETENT PERSONS STATEMENT AND DISCLAIMERS
The information in this report that relates to exploration results including geological interpretation, data
preparation and data quality, and the metallurgical testwork and results reported for the Jupiter Project, is
based on work compiled by Dr. Stuart Owen who is a Member of the Australian Institute of Geoscientists.
Dr. Owen is a permanent employee of Critica Limited and has suhicient experience that is relevant to the
style of mineralisation and type of deposit under consideration and to the activities which he is undertaking
to qualify as Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of
Exploration Results, Mineral Resources and Ore Reserves (JORC Code). Dr. Owen consents to the inclusion
in the report of the matters based on his information in the form and context in which they appear.
No new Mineral Resource information is contained in this report.
The information in this announcement that relates to the Jupiter Mineral Resource Estimate and Jupiter
Scoping Study (such as the production target and forecast financial information) has been extracted from
the Company’s ASX announcements “Jupiter Delivers First 160 Mt Indicated Mineral Resource” dated 12
October 2026 and the Jupiter Scoping Study announcement entitled “Jupiter Scoping Study Defines
Pathway to Development” dated 20 October 2026. Those announcements are accessible from the ASX
website at www.asx.com.au. Critica confirms that it is not aware of any new information or data that
materially ahects the information included in those announcements and that all material assumptions and
technical parameters underpinning the Mineral Resource Estimate, production target and forecast
financial information continue to apply and have not materially changed. The Competent Persons for the
Jupiter Mineral Resource Estimate were Dr Stuart Owen, Dr Natalee Bonnici and Mr Rodney Brown of SRK
Consulting (Australasia) Pty Ltd, for their respective areas of responsibility. Critica confirms that the form
and context in which the Competent Persons’ findings are presented have not been materially modified
from the relevant announcements.
The information in this announcement that relates to the Mt Lindsay Mineral Resource Estimate and Mt
Lindsay Scoping Study (such as the production target and forecast financial information) has been
extracted from the Company’s ASX announcements“Critica Updates Mt Lindsay Mineral Resource to JORC
2012” dated 14 September 2026 and the Mt Lindsay Scoping Study announcement entitled “Mt Lindsay
Study Delivers Strong Tungsten and Tin Economics”dated 29 September 2026. Those announcements are
accessible from the ASX website at www.asx.com.au. Critica confirms that it is not aware of any new
information or data that materially ahects the information included in those announcements and that all
material assumptions and technical parameters underpinning the Mineral Resource Estimate, production
target and forecast financial information continue to apply and have not materially changed. The
Competent Person for the Mt Lindsay Mineral Resource Estimate was Dr Stuart Owen. The technical
informationrelatingtotheMtLindsayScopingStudywasreviewedandapprovedbyMrJacoDreyer,General
Manager Mining of DRA Global, as set out in the Mt Lindsay Scoping Study announcement. Critica confirms
that the form and context in which the Competent Person’s findings are presented have not been materially
modified from the relevant announcements.
This announcement contains certain financial measures (such as NPV) that are not recognised under
International Financial Reporting Standards (IFRS). Although Critica believes these measures provide
useful information about Critica's financial forecasts, they should not be considered in isolation or as a
substitute for measures of performance or cash flow prepared in accordance with IFRS. As these measures
are not based on IFRS, they do not have standardised definitions and the way Critica calculates these
measures may not be comparable to similarly titled measures used by other companies. Consequently,
undue reliance should not be placed on these measures.
Forward-Looking Statements
Certain statements contained in this announcement are ‘forward-looking statements’. They include
indications of, and guidance on, future matters. Forward-looking statements include, but are not limited
8
to, statements preceded by words such as "targeted", "planned", “expected”, "projected", "estimated",
“may”, "scheduled", “intends”, “anticipates”, “believes”, "potential", “could”, “likely”, “nominal”,
"conceptual",“propose”,“will”,“forecast”,“estimate”, and other similar expressions within the meaning of
securities laws of applicable jurisdictions and include, but are not limited to, anticipated future activities
at the Jupiter Project and Mt Lindsay Project, production targets, financial forecasts, estimates and
assumptions in respect of Mineral Resources and anticipated grades and recovery rates, production and
prices, recovery costs and results, capital expenditures and operating expenditures and are or may be
based on assumptions and estimates related to future technical, economic, market, political, social and
other conditions.
These ‘forward-looking statements’ are necessarily based upon a number of estimates and assumptions
that, while considered reasonable by Critica, are inherently subject to significant technical, business,
economic, competitive, political and social uncertainties and contingencies and involve known and
unknown risks and uncertainties that could cause actual events or results to diher materially from
estimated or anticipated events or results expressed or implied in any forward-looking statement and
deviations are both normal and to be expected.
The forward-looking statements contained in this announcement should be considered in light of those
risks and disclosures and the risks and disclosures previously announced by Critica. Neither Critica, nor
any of its directors, ohicers, employees, agents or advisers makes any representation, assurance,
guarantee or warranty, express or implied as to the accuracy, likelihood of achievement or reasonableness
of any forward-looking statement contained in this announcement. There is no certainty that the Jupiter
Project or Mt Lindsay Project (or both of them) will be feasible and there can be no assurance of whether
either or both of them will be funded, permitted, developed, constructed and commence operations, nor
whether the announced Scoping Study results for those projects will be accurate.
Critica disclaims any intent or obligation to update publicly or release any revisions to any forward-looking
statements, whether as a result of new information, future events, circumstances or results or otherwise
after the date of this announcement or to reflect the occurrence of unanticipated events, other than as
required by the Corporations Act 2001 (Cth) or the ASX Listing Rules.
No assurances can be given that the production targets, financial forecasts or other forecasts or forward-
looking statements or information in this announcement will be achieved.
Investors are cautioned that ‘forward-looking statements’ are not a guarantee of future performance and
accordingly investors are cautioned not to put undue reliance on ‘forward-looking statements’ due to the
inherent uncertainty therein.
9
Appendix One: JORC Code, 2012 Edition
Section 1 Sampling Techniques and Data
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.
§ The Pregnant Leach solution subject of this announcement was produced from a
beneficiated bulk sample taken from 6 Air Core (AC) and 2 diamond drill core (DDC) drill
holes within the Jupiter Inferred Resource envelope.
§ The drill hole composition of the beneficiated bulk sample corresponds to the Fe-rich clay
sample detailed in ASX announcement - ‘Consistent Bulk Sample Results Strengthen
Jupiter Pathway’ – 29 September 2025.
§ The pregnant leach solution (PLS) was generated at AMML by acid baking and subsequent
water leaching of a beneficiated concentrate derived from the QTC metallurgical composite
under varying operating conditions. PLS from multiple tests was combined, with a portion
used in preliminary resin adsorption testwork.
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.).
§ AC drilling presented in this report was completed by KTE Mining Services Pty Ltd.
§ AC drilling was completed using a Challenger RA 150 AC rig mounted on 4 x 4 MAN truck
with an onboard 350psi/750cfm compressor. Drilling was conducted with 85 and 90 mm
diameter blades and all holes were drilled to blade refusal.
§ DD drilling presented in this report was completed by DDH1 Drilling.
10
Criteria JORC Code Explanation Commentary
§ DD drilling was conducted using a Sandvick DE840 truck mounted drill rig. Drilling
comprised of PQ3 and HQ3 drill rods, with HQ and NQ tails into fresh rock.
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.
§ AC and RC sample return was visually monitored to ensure acceptable drilling recovery.
§ Bulk AC and RC sample weights were recorded on site for QAQC purposes.
§ The majority of holes intersected a shallow water table at or below the base of overburden
which only locally impacts sample recovery.
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.
§ All drill-holes have been geologically logged by suitably qualified Critica Limited geologists.
Geological logging includes regolith, lithology, colour, grain size and visual estimation of
mineral abundances.
§ Magnetic susceptibility was routinely conducted on all holes either on 1 m intervals or the
assay intervals.
§ Hyperspectral mineralogy was routinely conducted by ALS Geochemistry on all assay
samples subsequent to the initial BRAC036-039 discovery drilling program (BRAC040-
BRAC313, BRRC001-BRRC080, JPAC001-JPAC262 and JPD001-JPD007).
§ Geological logging was validated and cross-checked with geochemical and hyperspectral
data for geological modelling.
§ The detail of the logging and data validation checks are sufficient to support a Mineral
Resource estimation.
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.
§ Drill hole composites of two to six metres were collected by spear from the bagged one
metre bulk samples.
§ Median assay sample weights across all AC and RC programs range 1.6 - 2.6 kg with an
overall sample median of 2.4 kg. The sample size is considered appropriate for the type of
mineralisation and material sampled.
§ Certified Reference Materials (CRM) were included in all submissions at a rate of at least 1
in 20 and one CRM per drill hole.
11
Criteria JORC Code Explanation Commentary
§ 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.
§ The metallurgical composite (QTC) reported here covered 138.7 metres in 8 drill holes (see
ASX announcement - Consistent Bulk Sample Results Strengthen Jupiter Pathway – 29
September 2025)
§ Composited intervals within each drill hole ranged from 10.5 to 36 metres and were
composited from crushed and pulverised assay laboratory returns, then homogenised by
mat rolling, bagged and weighed for supply to GAVAQ.
§ Total composite weight was c.100 kg.
§ At AMML, the intermediate concentrate was subjected to acid baking followed by water
leaching. Following leaching, the slurry was filtered, and the residue was washed. The PLS
was then used in preliminary resin adsorption tests to assess gallium, scandium and rare
earth element loading and resin selectivity.
§ Analytical samples generated during the testwork were submitted to ALS Geochemistry,
Perth WA and Intertek for ICP-MS analysis.
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.
§ Metallurgical testwork was undertaken at AMML. Analytical samples generated during the
testwork were submitted to ALS Geochemistry, Perth WA, and Intertek for analysis.
§ Samples were analysed for rare earth elements, gallium and scandium using ICP-MS.
Intermediate concentrate samples analysed by ALS Geochemistry, Perth WA were prepared
by lithium borate fusion followed by acid digestion of the resultant glass bead. The gallium
and scandium analytical results underpin the extraction results reported in this
announcement.
Verification of sampling
and assaying
§ The verification of significant intersections by
either independent or alternative company
personnel.
§ The use of twinned holes.
§ The metallurgical results are compatible with the observed mineralogy.
§ Primary data is stored and documented in industry standard ways.
12
Criteria JORC Code Explanation Commentary
§ Documentation of primary data, data entry
procedures, data verification, data storage
(physical and electronic) protocols.
§ Discuss any adjustment to assay data.
§ The gallium and scandium extraction results reported in this announcement were
calculated from AMML testwork data and ICP-MS analytical results provided by ALS
Geochemistry, Perth WA and Intertek.
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.
§ Drill-hole locations were determined using a Stonex S900A DGPS with nominal accuracy of
± 0.4 metres.
§ All co-ordinates and maps presented are in MGA Zone 50 GDA94 system.
§ Topographic control is derived from the catchment corrected Worldwide 3 arc second SRTM
spot height data.
Data spacing and
distribution
§ Data spacing for re
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