Critica Produces First MREC from Jupiter at ANSTO
Released
Released
Announcement PDF
ASX Announcement
16 February 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
Critica Produces First Commercial-Quality
MREC from Jupiter at ANSTO
ANSTO testwork delivers high-quality, commercial grade (58% TREO1
) Mixed
Rare Earth Carbonate (MREC) significantly advancing Jupiter's product
specification and Scoping Study readiness
Critica Limited (ASX: CRI) (“Critica” or “the Company”) is pleased to announce the successful production of an
initial commercial-quality MREC from the Jupiter Rare Earth Project in Western Australia.
The MREC was produced by the Australian Nuclear Science and Technology Organisation (ANSTO) using Critica’s
beneficiation-derived intermediate concentrate and a conventional acid bake hydrometallurgical flowsheet.
This milestone marks Jupiter’s transition from laboratory-scale validation towards proven, scalable product,
providing a key technical input into the ongoing Scoping Study. The successful production of this initial MREC and
previously Mixed Rare Earth Oxide (MREO) at GAVAQ2
highlights the geological and metallurgical optionality of
the Jupiter system and underpins the downstream processing assumptions now being advanced through
engineering studies.
1. TREO = La2O3 + CeO2 + Pr6O11 + Nd2O3 + Sm2O3 + Eu2O3 + Gd2O3 + Tb2O3 + Dy2O3 + Ho2O3 + Er2O3 + Tm2O3 + Yb2O3 + Lu2O3 + Y2O3
2 Refer to ASX Announcements 2 December 2025 and 17 November 2025.
Highlights
• First commercial-grade Mixed Rare Earth Carbonate (MREC) produced from Jupiter,
validating a conventional refinery-aligned product pathway, with a 58% TREO¹
carbonate generated at ANSTO, placing Jupiter at the upper end of development-stage
clay-hosted carbonate products
• Step-through recovery to MREC of approximately 80% TREO, with a defined pathway
to ~89% TREO recovery in a commercial circuit
• Effective impurity control achieved, supporting refinery suitability and product
qualification
• Conventional sulphuric acid bake flowsheet validated, confirming Jupiter’s amenability
to standard, scalable hydrometallurgical processing
• Magnet rare earth dominant product profile - MREC enriched in Nd, Pr, Dy & Tb
• GAVAQ pilot plant closed-circuit (3,000 kg bulk sample) close to completion
• Results materially de-risk the processing flowsheet and underpin Scoping Study
development
• Product grade and impurity profile compares favourably with Australian clay-hosted
peers
• Scoping Study commenced - expected delivery by the end of H1 CY2026
2
Critica’s CEO Jacob Deysel commented:
“Producing both a Mixed Rare Earth Carbonate and a Mixed Rare Earth Oxide from Jupiter marks a significant
advancement for Critica. This is where metallurgical testwork moves beyond laboratory validation and advances
towards delivering a demonstrated commercial product pathway.
Importantly, these are not isolated outcomes. The MREC produced by ANSTO, together with the successful
production of MREO, confirm the repeatability and robustness of the flowsheet. This provides confidence that
Jupiter’s metallurgy is scalable and development-ready.
Jupiter’s geology and mineralogy provide real downstream optionality — enabling alternative product routes
using conventional processing methods, while maintaining effective impurity control and strong recoveries of
magnet rare earth elements.
These results, although still to be optimised, materially de-risk the processing pathway and establish a clear
foundation for product specification, partner engagement and progression of the Scoping Study. Our focus now
is disciplined engineering execution as we advance Jupiter toward development.”
MREC is a commonly traded intermediate product within the rare earth supply chain, typically supplied to
separation plants for further refining. The successful production of a 58% TREO MREC (refer Table 2) confirms
Jupiter’s ability to generate a conventional carbonate product form consistent with industry practice.
As an upgraded intermediate product, mixed rare earth carbonate is typically positioned higher in the value chain
than mineral concentrates, reflecting its increased rare earth content and suitability for downstream refining.
Figure 1 illustrates the integrated beneficiation and downstream processing configuration now being
incorporated into the Jupiter Scoping Study. The production of commercial-quality MREC validates this integrated
pathway and provides a defined processing basis for Scoping Study development.
Figure 1 - Integrated Beneficiation-First and Downstream Processing Flowsheet – Jupiter Project
3
Technical Summary – MREC Production Pathway (ANSTO)
Initial downstream testwork undertaken by ANSTO to produce a MREC from Jupiter intermediate concentrate
comprised the following conventional sulphuric acid bake hydrometallurgical stages:
• Sulphuric acid bake
• Water leach
• Impurity Removal Stage 1 (IR-1)
• Impurity Removal Stage 2 (IR-2)
• MREC precipitation
Optimised impurity removal conditions materially improved iron and phosphorus rejection, reducing
downstream rare earth co-precipitation losses and supporting efficient recovery through to precipitation.
Under these conditions, a MREC was produced grading approximately 58% TREO, at approximately 80%
cumulative recovery from acid bake through to MREC precipitation.
ANSTO has advised that, in a commercial operating circuit, recycling of Impurity Removal Stage 2 (IR-2) solids
would recover rare earths currently reporting to that stream. On this basis, overall recovery through to MREC is
expected to increase to approximately 89% TREO in practice.
These results confirm the technical viability of a conventional sulphuric acid bake flowsheet for Jupiter and
provide a validated downstream processing basis for the ongoing Scoping Study.
Standard Acid Bake Process Conditions
The MREC products were generated using a conventional sulphuric acid bake flowsheet under the operating
conditions summarised below.
Table 1: Jupiter Acid Bake Process Conditions
Parameter Typical Condition
Acid type Sulphuric acid (H2SO₄)
Acid concentration ~1,400–1,600 kg H2SO₄ per tonne of concentrate
Bake temperature ~260 °C
Bake time ~3 hours
Leach medium Water
Leach temperature Ambient
Pressure Ambient
Leach time
Rapid REE dissolution observed; majority of REEs leached
within ~30–45 minutes
Solid: liquid ratio Optimised for rapid REE release
IR-1 pH ~3.5
IR-2 pH Optimised for residual impurity control
Precipitation reagent Carbonate-based
These operating conditions confirm that Jupiter can be processed using a conventional, industry-standard
sulphuric acid bake flowsheet suitable for downstream rare earth carbonate production. The acid addition
range and bake parameters applied in this testwork are within typical ranges used for rare earth phosphate
concentrates.
4
Further optimisation work is planned across acid bake, impurity removal and solid-liquid separation stages,
with the objective of increasing rare earth extraction, reducing reagent consumption and enhancing overall
circuit efficiency.
MREC Product Quality
Chemical analysis of the MREC produced by ANSTO confirms the generation of a high-quality product, with
consistent TREO grade and effective control of key deleterious impurities.
The results demonstrate repeatable product quality and confirm the reliability of the downstream
processing pathway under the defined operating conditions.
Table 2: REE content of Jupiter MREC (expressed as oxides)
Oxide Unit MREC
La2O₃ wt% 13.15
CeO2 wt% 27.03
Pr6O11 wt% 3.12
Nd2O3 wt% 10.63
Sm2O3 wt% 1.23
Eu2O3 wt% 0.25
Gd2O3 wt% 0.67
Tb4O₇ wt% 0.07
Dy2O₃ wt% 0.26
Ho2O₃ wt% 0.04
Er2O₃ wt% 0.08
Tm2O₃ wt% 0.01
Yb2O₃ wt% 0.03
Lu2O₃ wt% 0.003
Y2O₃ wt% 1.25
TREO wt% 57.82
MREO wt% 14.1
MREO/TREO wt% 24.4
LREO wt% 55.4
HREO wt% 2.41
* In practice recycling of IR2 solids is anticipated to take overall recovery to c. 89%.
The MREC delivered a total rare earth oxide (TREO) grade of 58%, confirming commercial-quality carbonate
production from Jupiter intermediate concentrate.
Magnetic rare earth oxides (Nd2O₃, Pr₆O₁₁, Dy₂O₃ and Tb₄O₇) represent approximately 24% of total TREO,
reflecting Jupiter’s magnet-dominant rare earth profile (see Figure 2).
5
Figure 2: Distribution of Magnet Rare Earth Oxides (Nd, Pr, Dy, Tb) in MREC
Effective impurity removal was achieved during the two-stage impurity removal process (IR-1 and IR-2), resulting
in low concentrations of key deleterious elements in the final MREC product.
Table 3: Key deleterious impurities in initial Jupiter MREC
Impurity Units MREC
Al2O₃ wt% 0.89
CaO wt% 0.19
Fe2O₃ wt% 0.08
K2O wt% 0.12
MgO wt% 0.11
MnO2 wt% 0.02
Na2O wt% 1.32
P2O₅ wt% 0.22
SO4 wt% 2.25
SiO2 wt% 0.11
U3O₈ ppm 51
ThO2 ppm 13
Key impurities including Al, Ca, Fe, P, U and Th were maintained at levels consistent with commercial MREC
specifications. Based upon the initial MREC testwork results we believe there is considerable scope to reduce the
already low impurity levels further. The impurity profile achieved demonstrates effective downstream
purification and supports the suitability of the conventional sulphuric acid bake flowsheet for scalable carbonate
production.
MREC Grade and Impurity Profile
The grade and impurity profile of Jupiter’s MREC product has been assessed against publicly reported mixed rare
earth carbonate products from development-stage clay-hosted and ionic clay rare earth projects.
• On an oxide-equivalent basis, Jupiter’s MREC delivered:
6
• 58% TREO
• Approximately 24% magnet rare earth oxides (Nd, Pr, Dy, Tb) as a proportion of TREO
• Controlled levels of key deleterious impurities
A TREO grade of approximately 58% positions Jupiter’s carbonate product toward the upper end of grades
reported for development-stage mixed rare earth carbonate products.
Key impurity levels are within ranges typically reported for carbonate intermediates at comparable stages of
project development( refer Table 3). Aluminium, iron and alkaline elements are present at levels consistent with
conventional downstream processing requirements, with further optimisation potential identified through
beneficiation and circuit refinement.
Overall, the product specification achieved supports refinery-aligned carbonate production and compares
favourably with development-stage clay and ionic clay projects progressing through Scoping and Pre-Feasibility
studies.
Recovery and Process Performance
The ANSTO testwork program incorporated full mass balance accounting from sulphuric acid bake through to
final MREC precipitation.
Key recovery outcomes:
• Cumulative recovery to MREC of approximately 80.3% TREO
• Recovery measured across:
o Acid bake
o Leach
o Impurity Removal Stage 1 (IR-1)
o Impurity Removal Stage 2 (IR-2)
o Carbonate precipitation
Commercial circuit optimisation pathway:
• Rare earths currently reporting to IR-2 solids are recoverable via solids recycling
• Recycling of IR-2 stream expected in a commercial circuit
• Projected overall recovery increases to approximately 89% TREO
Processing implications:
• Confirms technical viability of a conventional sulphuric acid bake flowsheet
• Demonstrates robust recovery performance under controlled conditions
• Establishes a validated processing basis for integration into the Jupiter Scoping Study
Integrated Beneficiation-First and Downstream Processing Pathway
Critica’s development approach at Jupiter integrates upfront beneficiation with conventional downstream
hydrometallurgical processing to produce MREC.
Integrated development framework:
• Beneficiation-first upgrading to reject mass and increase feed grade prior to hydrometallurgical
treatment
• Generation of higher-grade intermediate concentrate to reduce downstream processing volume
• Conventional sulphuric acid bake flowsheet under ambient leach conditions
• Two-stage impurity removal prior to carbonate precipitation
• Optional downstream product flexibility (MREC and MREO pathways demonstrated)
7
Strategic implications:
• Reduced reagent intensity per tonne of run-of-mine feed
• Lower downstream circuit scale requirements
• Simplified hydrometallurgical configuration
• Scalable and capital-efficient flowsheet design
• Alignment with conventional industry practice
Next Steps
With commercial-quality MREC now demonstrated, Critica is transitioning from validation testwork to integrated
development execution.
Near-term activities are focused on scaling beneficiation and downstream processing programs, generating
representative product samples for qualification, and progressing engineering inputs into the Jupiter
Scoping Study.
Near-Term Work Programmes
Beneficiation pilot operations (GAVAQ):
• Continued closed-circuit operation of the GAVAQ pilot plant
• Generation of recovery, mass balance and operating data from the previously reported 3,000 kg bulk
sample
• Preparation and dispatch of an additional ~20,000 kg bulk sample for pilot-scale treatment
• Production of intermediate concentrate to support further MREC and MREO sample generation
• Generation of representative product samples for qualification and offtake engagement
Downstream processing workstreams:
• Ongoing parallel downstream testwork programs across:
o ANSTO
o Minutech–AMML
o Phenikaa University
• Refinement of MREC and MREO product specifications
• Production of representative carbonate and oxide samples for potential downstream partners
Product and market positioning:
With commercial-quality MREC now demonstrated, Critica is advancing the preparation of representative
product samples for qualification with downstream separation plants and refining groups. The Company will
progress early-stage engagement with potential offtake counterparties, aligning product specifications with
refinery requirements as part of the Scoping Study execution pathway.
• Advancement of formal product specifications
• Early-stage engagement with downstream processors and offtake counterparties
• Alignment of product quality parameters with market requirements
Scoping Study execution:
• Integration of beneficiation, downstream processing, infrastructure and development assumptions
• Definition of a base-case development pathway
• Incorporation of validated recovery and product quality outcomes into study design
• The Jupiter Scoping Study is being led by:
8
o Sedgman – Lead study management and process integration
o Snowden Optiro – Mining and scheduling
o SRK Consulting – Resource update and optimisation
• Expected delivery by the end of H1 CY2026
Figure 3: Indicative Jupiter Development Timeline and Scoping Study Pathway
*Subject to study outcomes, market conditions, permitting, financing and Board approval.
9
Authorised by the Board of Critica Limited.
Jacob Deysel
CEO
Critica Limited
Level 2, 16 Altona Street, West Perth, Western Australia
T: + 61 8 6279 9428 | admin@critica.limited | critica.limited
Investor and Media Relations
Dannika Warburton
Investability Partners
investors@investability.com.au
JOIN CRITICA’S INTERACTIVE INVESTOR HUB
Sign up and engage with our investor relations team
Critica (ASX: CRI) is rapidly
advancing the Jupiter Project
in WA, Australia’s largest
clay-hosted rare earth
resource, with a mine-to-
magnet plan to meet
surging AI, EV, renewables
and defence demand.
10
Competent Persons Statement
The information in this report that relates to exploration results including geology interpretation, data
preparation and data quality 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 sufficient experience
that is relevant to the style of mineralisation and type of deposit under consideration and to the activity 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.
The Information in this announcement that relates to previous exploration results for the Projects is extracted
from the following ASX announcements:
• MREP Shows Strong Magnet REE & Y Grades- 2 December 2025
• Critica’s MREP flowsheet achieves 63% Gallium Leach Recovery –10&17 November 2025
• Consistent Bulk Sample Results Strengthen Jupiter Pathway – 29 September 2025
• Critica to produce high-grade REE concentrate at pilot plant – 1 September 2025
• ANSTO & Minutech engaged to produce first MREC from Jupiter – 26 August 2025
• Jupiter Confirmed as Australia’s Largest MREO Clay Resource – 13 August 2025
• Critica Advances Jupiter – Outstanding Magnet and HREO Grades – 16 July 2025
• Critica Commences Bulk Metallurgical Testwork – 28 May 2025
• First Pass Metallurgical Testwork Delivers 830% REE Upgrade – 23 January 2025
No new Mineral Resource information is contained in this report.
Information in this report which refers to Mineral Resources for the Jupiter Project in Western Australia is taken
from the company’s initial ASX disclosure dated 11 February 2025, 13 August 2025 and 10 November 2025 at
www.critica.limited. The disclosure fairly represents information compiled by Mr Rodney Brown a Member of
Australian Institute of Mining and Metallurgy and is an employee of SRK Consulting (Australia) Pty Ltd,
independent of Critica Limited and has no conflict of interest.
The Company confirms that all material assumptions and technical parameters underpinning the Mineral
Resources Estimates referred to within previous ASX announcements remain current and have not materially
changed since it was last reported. The Company is not aware of any new information or data that materially
affects the information included in this announcement.
The Company confirms that the form and context in which the Competent Person's findings are or were
presented have not been materially modified.
11
Table 4: Jupiter drill holes and intervals used to produce the reported Mixed Rare Earth
Carbonate
Hole
Drill
type
East m North m RL m
Azimuth Dip
From
(m)
To (m)
Interval
(m)
MGA Zone50
GDA94
MGA Zone50
GDA94
AHD
BRAC105 AC 531247 6854602 354 360 -90 36 44 8
JPAC156 AC 524250 6850353 342 360 -90 8 20 12
JPAC173 AC 530497 6851350 356 360 -90 32 40 8
JPAC174 AC 529755 6851838 352 360 -90 44 52 8
JPAC176 AC 530248 6851845 354 360 -90 44 48 4
JPAC177 AC 530496 6851848 355 360 -90 36 56 20
JPAC182 AC 530752 6852355 354 360 -90 28 36 8
JPAC183 AC 530507 6852347 352 360 -90 32 48 16
JPAC185 AC 531247 6852848 356 360 -90 32 36 4
JPD001 DDH 529507 6857126 351 180 -70 31.2 37.9 6.7
JPD004 DDH 527978 6852100 344 90 -70 35.3 67.9 32.6
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Appendix One: 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
Table
Sampling
Techniques
• Nature and quality of sampling (e.g.: cut
channels, random chips, or specific
specialised industry standard
measurement tools appropriate to the
minerals under investigation, such as
downhole gamma sondes, or handheld
XRF instruments, etc.). These examples
should not be taken as limiting the broad
meaning of sampling.
• 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.: 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 Mixed Rare Earth Carbonate (MREC)
subject of this announcement was
produced from a beneficiated bulk
sample taken from 9 Air Core (AC) and 2
diamond drill core (DDC) drill holes as
within the Jupiter Inferred Resource
envelope.
• Sampling was conducted and supervised
by a suitably qualified Critica geologists
and field technicians.
Drilling
Techniques
• Drill type (e.g.: core, reverse circulation,
open-hole hammer, rotary air blast,
auger, Bangka, sonic, etc..) and details
(e.g.: core diameter, triple or standard
tube, depth of diamond tails, face-
sampling bit or other type, whether core
is oriented and if so, by what method,
etc..).
• The metallurgical composites were
collected from 90mm diameter AC holes
drilled by KTE Mining Services with a KL
150 Air Core rig and PQ diameter DDC
holes drilled by DDH1 with a Sandvik
DE840 truck mounted drill rig.
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.
• The bulk AC samples were visually
assessed and weighed. Recovery is
considered acceptable and
representative.
• The diamond holes were marked up and
core loss recorded prior to samples
being quarter cored.
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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 holes were qualitatively geologically
logged by suitably qualified Critica
geologists.
• The detail of geological logging,
minerology and geochemistry are
appropriate for exploration, resource
definition and metallurgical sample
selection purposes.
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.
• The material used in the reported
metallurgical test work represents 127
m from 9 AC and 2 DDC drill holes within
the Jupiter Inferred Resource footprint.
• The metallurgical samples were
collected by sampling scoop from the
bulk AC drill spoils and cut in continuous
quarter core intervals from the PQ
diameter Diamond Drill Core. The
samples were crushed as necessary,
pulverized then homogenized by mat
rolling for supply to the metallurgical
laboratory.
• A subsample of the homogenized bulk
sample was collected for head assay
prior to submission to the metallurgical
laboratory.
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.
• Head assaying of the constituent drill
samples and metallurgical concentrate
supplied to ANSTO was conducted at
ALS Geochemistry, Perth for a broad
suite of elements using industry
standard methods including REEs by
lithium borate fusion with ICP-MS finish.
Certified reference materials reported
within expected ranges.
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.
• The results are compatible with
observed mineralogy.
• Primary data is stored and documented
in industry standard ways.
• The use of twinned holes is not relevant
to the reported metallurgical test work.
• Assay data is reported by the relevant
assay and metallurgical laboratories and
has not been adjusted in any way.
Location of
Data Points
• Accuracy and quality of surveys used to
locate drill holes (collar and down-hole
surveys), trenches, mine workings and
• Drill hole locations were determined by
handheld GPS with a nominal accuracy
of +/- 5 metres.
14
other locations used in Mineral Resource
estimation.
• Specification of the grid system used.
• Quality and adequacy of topographic
control.
• All coordinates and maps presented
here are in the MGA Zone 50 GDA94
system.
• Topographic control is provided by
Worldwide 3 arc second SRTM spot
height data.
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.
• The drill holes selected for the reported
metallurgical test work were part of
Jupiter exploration and resource
definition programs as previously
reported to the ASX.
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.
• All AC drilling was vertical and DDC
drilling -70 degrees as appropriate for
the broadly flat-lying mineralization
style.
• Downhole thickness approximates true
thickness.
Sample Security • The measures taken to ensure sample
security.
• The chain of custody for the
metallurgical composite from collection
to submission to the metallurgical
laboratory was managed by Critica
personnel. and the level of security is
considered appropriate.
Audits or
Reviews
• The results of any audits or reviews of
sampling techniques and data.
• The drilling and sample selection was
monitored and reviewed by suitably
qualified Critica personnel.
15
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 Brothers REE Project currently consists of
granted Exploration Licences E59/2421,
E59/2463, E59/2710, E59/2711, E59/2819,
E59/2820, E59/2821, E59/2827, E59/2889,
E59/2890, E59/2907, E59/2927, E59/2928,
E59/2930, and applications E59/2977 and
E58/629. All are 100% held by Tasmanian Rare
Earth Pty Ltd a wholly owned subsidiary of
Critica Limited.
Exploration
Done by Other
Parties
• Acknowledgment and appraisal of
exploration by other parties.
• Documented previous explorers within the
area now covered by the Brothers Project
include North Flinders Mines Ltd, CRA
Exploration Pty Ltd, Spark Energy Pty Ltd,
Arcadia Minerals Ltd, Babalya Gold Pty Ltd,
Burmine Ltd, Equigold NL, Equinox Resources
NL, Jervois Mining Ltd, Minjar Gold Pty Ltd,
Mount Magnet South NL, Sons of Gwalia Ltd
and David Ross.
• Refer to previous Critica announcements to
the ASX and also available from
http://critica.limited.
Geology • Deposit type, geological setting and
style of mineralisation.
• The Brothers REE exploration area is situated
within the Western Australian Archean Yilgarn
Craton and mostly comprises Cenozoic cover
sequence overlying an extensive Archaean
monzogranite complex (the Big Bell Suite).
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:
• easting and northing of the
drill hole collar
• elevation or RL of the drill hole
collar
• dip and azimuth of the hole
• down hole length and
interception depth
• hole length.
• If the exclusion of this information
is justified on the basis that the
information is not Material and this
exclusion does not detract from the
understanding of the report, the
Competent Person should clearly
explain why this is the case.
• Locations and intervals for the metallurgical
material used in the test work reported here
are listed in Table 4 of this announcement.
• Collar locations were determined by
differential GPS to sub-metre accuracy.
• All coordinates and maps presented here are
in the MGA Zone 50 GDA94 system.
• Topographic control is provided by Worldwide
3 arc second SRTM spot height data.
• Refer to previous ASX announcements for
relevant intersections, assay results and
resource estimation.
Data
Aggregation
Methods
• In reporting
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