Jupiter Delivers Impressive High Grade (84% TREO) MREP
Released
Released
Announcement PDF
28 October 2025
ASX: CRI
CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
Jupiter Delivers First High-Grade (84% TREO) Mixed Rare
Earth Product, Further De-Risking Critica’s Flowsheet
Critica Limited (ASX: CRI) (“Critica” or “the Company”) has achieved a major milestone with the successful
production of an impressive, high quality Mixed Rare Earth Product (MREP) from the Company’s flagship
Jupiter Deposit in Western Australia. The outstanding metallurgical results validate the Company’s
beneficiation-first strategy and further de-risks Critica’s flowsheet, marking a clear transition from
explorer to developer.
Announcement Highlights
• First Mixed Rare Earth Product (MREP) produced from Jupiter concentrate, assaying
84% TREO.
• 78% recovery to Mixed Rare Earth Oxide (MREO) achieved, confirming high leach
extraction.
• Standard acid-bake process successful; parallel alternative leach programs underway at
ANSTO and Minutech-AMML.
• Very low impurities – uranium and thorium well below transport and handling
thresholds1.
• ~3,000 kg closed-circuit pilot at GAVAQ (Hanoi) now in commissioning phase.
• Beneficiation testwork continues to deliver ~95 % mass rejection and 6–10× grade
uplift, supporting a simple, capital-efficient flowsheet.
• These results prove that Critica can produce a high-grade Mixed Rare Earth Product
(MREP).
The first unoptimised high-grade MREP from Jupiter achieved 84% TREO with 78% recovery to Mixed Rare
Earth Oxide (MREO). This demonstrates that beneficiated Jupiter concentrate can be leached using
conventional, scalable hydrometallurgy, yielding a high-purity oxide product (see Figure 1).
The result represents a major technical step forward, advancing Critica’s pathway toward pilot-scale
operations, Scoping Study inputs, and product specification definition.
1 One of the world’s largest and cleanest clay-hosted deposits.
28 October 2025
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CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
The metallurgical work forms part of Critica’s broader Mixed Rare Earth Products (MREP) program,
encompassing both oxide (MREO) and carbonate (MREC) specifications. The initial oxide product was
produced via a standard acid-bake route under supervision of the Centre of Science and Technology of
Minerals and Environment (GAVAQ) in Hanoi, Vietnam (see Figure 2).
The Magnet Rare Earth Oxide (Nd, Pr, Dy, Tb) component represented ~23% of total REO content,
reinforcing Jupiter’s strong magnet-REE bias — the value driver for EV, AI, Data Centres, renewable and
defence supply chains. The Jupiter Project is Australia’s largest Magnet Rare Earth resource hosted in clay
and these results will be globally significant for consideration of Western sourced rare earth supply chain
development.
Parallel hydrometallurgical programs at the Australian Nuclear Science and Technology Organisation
(ANSTO) and Minutech – Australian Minmet Metallurgical Laboratories (AMML) are exploring alternative
leach routes to further optimise MREP chemistry.
Critica’s CEO Jacob Deysel commented:
“This first unoptimised Mixed Rare Earth Product is a pivotal step for Critica. Our metallurgical results
confirm that beneficiated Jupiter concentrate can be successfully leached using conventional, scalable
processing to produce a high-grade oxide product.
With beneficiation proven, MREP achieved, and pilot commissioning underway, we are moving decisively
from explorer to developer.
Our focus now is optimisation, product specification, and engagement with prospective offtake and
strategic partners as we continue building a credible, low-cost, Western-aligned rare earth supply chain
anchored in one of the world’s largest and cleanest clay-hosted deposits.”
Figure 1: Initial Mixed Rare Earth Product (oxide) 84% TREO
28 October 2025
ASX: CRI
CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
Why This Matters – Flowsheet De-risked
This milestone bridges beneficiation and hydrometallurgy, confirming the integrity of Critica’s integrated
flowsheet. It demonstrates and supports the Critica model of:
• Simplicity: Beneficiate first to reduce mass and cost; leach an upgraded hydromet feed product
(intermediate concentrate) to saleable MREP specifications.
• Scale: Australia’s largest clay-hosted magnet-REE resource base underpins long-life optionality.
• Speed: Pilot commissioning now; data flows directly into product specification and Scoping Study
workstreams.
Figure 2: Schematic of GAVAQ MREO Flowsheet - standard acid-bake
28 October 2025
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CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
Pilot Plant Commissioning Underway
Construction of the 3,000kg closed-circuit pilot plant at GAVAQ in Hanoi is now well advanced, with
equipment installation and commissioning activities underway (see Figure 3).
The pilot will enable continuous operation to optimise upgrade and recovery performance, generate
larger volumes of concentrate for downstream hydrometallurgical testwork and provide data for Critica’s
upcoming Scoping Study.
Figure 3: GAVAQ Pilot Plant – cold commissioning of Pilot Plant
Progression Pathway – From Laboratory to Pilot
Critica’s Jupiter flowsheet development has advanced through a disciplined scale-up program, validating
performance and de-risking the process at each stage:
• Laboratory Scale (23 January 2025): Initial flotation and beneficiation trials on 50 kg of sample
established proof of concept and confirmed Jupiter’s amenability to physical upgrading.
• Bulk Sample (28 May 2025): Dispatch of a 400 kg composite to GAVAQ in Vietnam confirmed
consistent ~95 % mass rejection and 6–10× TREO grade uplift across all ore types ( See ASX
announcement 29 September 2025 – Consistent Bulk Sample Results Strengthen Jupiter Pathway).
28 October 2025
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CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
• Intermediate Product Validation: This bulk sample produced intermediate beneficiated concentrate
that was divided between GAVAQ, ANSTO and Minutech–AMML to support parallel
hydrometallurgical development. GAVAQ has since delivered the first Mixed Rare Earth Oxide
(MREO) from this intermediate concentrate, validating the integrated beneficiation-to-leach
pathway and confirming parallel progress across all laboratories.
• Pilot Plant (1 September 2025): Commissioning of the 3,000 kg closed-circuit pilot plant at GAVAQ
is now underway. This program will optimise upgrade and recovery performance, produce
additional concentrate for MREP optimisation, and generate key inputs for Critica’s Scoping Study
and early offtake discussions.
The bulk sample completed in May 2025 therefore marks the critical bridge between laboratory trials and
pilot operations—demonstrating that ore from Jupiter can be beneficiated, leached, and converted to a
high-grade oxide product through scalable, conventional processing routes.
Next Steps
• Commission and operate the closed-circuit pilot at GAVAQ (Q4 ’25 – H1 ’26).
• Conduct parallel hydrometallurgical optimisation at GAVAQ, ANSTO and Minutech-AMML to finalise
bake and leach parameters (Q4 ’25 – H1 ’26).
• Define final MREP/MREO product specifications (H1 ’26).
• Incorporate pilot and hydromet results into Scoping Study inputs (H1 ’26).
• Initiate Pre-feasibility Study (H2 ’26).
• Advance offtake and strategic engagement as product specifications are finalised (ongoing).
About GAVAQ
Established in 2004, the Centre of Science and Technology of Minerals and Environment (GAVAQ) in
Hanoi is a Vietnam-based mineral-processing and metallurgical engineering firm with nearly two
decades of experience in beneficiation and plant design. The company provides end-to-end capability
from feasibility to full-scale circuit delivery and equipment supply. Vietnam itself hosts significant rare-
earth resources and has deepening expertise in REE processing, making GAVAQ’s involvement
particularly valuable to Critica’s flowsheet development and pilot-scale programs.
28 October 2025
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CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
Glossary of Terms
• TREO (Total Rare Earth Oxides): Total content of all rare earth oxides in a sample.
• MREP (Mixed Rare Earth Products): Critica’s collective term covering both Mixed Rare Earth
Carbonate (MREC) and Mixed Rare Earth Oxide (MREO) specifications. The product reported here is
the oxide form of MREP, assaying 84% TREO at 78% recovery.
• Beneficiation: Physical upgrading of ore by rejecting waste material while concentrating valuable
minerals.
• Open Circuit vs Closed Circuit: Open circuit runs once without recycling; closed circuit recycles
process streams to maximise recovery.
• Clay vs Ionic Clays: Jupiter’s clay-hosted ore can be beneficiated upfront, unlike ionic clays that must
be leached directly.
Authorised by the Board of Critica Limited.
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.
Jacob Deysel
CEO
Critica Limited
Level 2, 16 Altona Street, West Perth, Western Australia
T: + 61 8 6279 9428 | admin@critica.limited | www.critica.limited
Investor and Media Relations
Dannika Warburton
Investability Partners
investors@investability.com.au
28 October 2025
ASX: CRI
CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
The Company confirms that the form and context in which the Competent Person's findings are or were presented have not been
materially modified.
Critica Limited (ASX: CRI) is advancing the Jupiter Project in Western Australia - recognised as Australia’s largest clay-
hosted rare earths resource and the nation’s largest magnet-REE resource base. Jupiter is magnet-REE dominant (Nd,
Pr, Dy, Tb), the value drivers for EV, renewable and defence supply chains. Breakthrough beneficiation testwork has
demonstrated ~95% mass rejection with an ~8× grade uplift into a magnet-REE-rich concentrate, underscoring the
potential for a simple, capital-efficient flowsheet. With exceptionally low U/Th content, Jupiter presents a distinctive
development profile.
Critica is pivoting from explorer to developer with a clear mine-to-magnet roadmap: scale beneficiation and leach to
pilot, finalise MREP specifications, progress development studies and approvals, and advance product qualification and
offtake with Western-aligned partners.
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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:
• 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 and 13 August 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 last reported. The Company
is not aware of any new information or data that materially affects the information included in this announcement.
28 October 2025
ASX: CRI
CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
Table 1: Jupiter drill holes and intervals used to produce the reported Mixed Rare Earth Oxide
Hole
Drill
type
East m
MGA Zone50
GDA94
North m
MGA Zone50
GDA94
RL m
AHD
Azimuth Dip
From
(m)
To
(m)
Interval
(m)
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 DDC 529507 6857126 351 180 -70 31.2 37.9 6.7
JPD004 DDC 527978 6852100 344 90 -70 35.3 67.9 32.6
28 October 2025
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CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
ABN 51 119 678 385 | T: +61 8 6279 9428 | F: +61 8 6500 9986 | admin@critica.limited | www.critica.limited
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 down hole 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.: ‘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 Mixed Rare Earth Product (MREP)
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 within the Jupiter
Inferred Resource envelope as listed in
Table 1 on this announcement.
• 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.
Logging • Whether core and chip samples have been
geologically and geotechnically logged to a
level of detail to support appropriate Mineral
• All holes were qualitatively geologically
logged by suitably qualified Critica
geologists.
28 October 2025
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CRITICA LIMITED Level 2, 16 Altona Street, West Perth, Western Australia
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Criteria JORC Code explanation Commentary
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.
• The detail of geological logging, minerology
and geochemistry is 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 as listed
in Section 2 below.
• 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 bulk metallurgical composite
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.
• Metallurgical process materials and
products were assayed under the
supervision of the Centre of Science and
Technology or Minerals and Environment
(GAVAQ), Vietnam.
• Assaying of leach residues and solutions
was conducted at Intertek, Perth using
industry standard methods.
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 metallurgical 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.
28 October 2025
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Criteria JORC Code explanation Commentary
• Assay data is as 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 other
locations used in Mineral Resource
estimation.
• Specification of the grid system used.
• Quality and adequacy of topographic control.
• Drill hole locations were determined by
handheld GPS with a nominal accuracy of
+/- 5 metres.
• 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 test work was monitored and reviewed
by suitably qualified Critica metallurgist Dr
Hien Dinh.
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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 1 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.
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Criteria JORC Code explanation Commentary
Data
aggregation
methods
• In reporting Exploration Results,
weighting averaging techniques,
maximum and/or minimum grade
truncations (e.g. cutting of high
grades) and cut-off grades are
usually Material and should be
stated.
• Where aggregate intercepts
incorporate short lengths of high
grade results and longer lengths of
low grade results, the procedure
used for such aggregation should be
stated and some typical examples of
such aggregations should be shown
in detail.
• The assumptions used for any
reporting of metal equivalent values
should be clearly stated.
• Metal equivalents have not been applied.
• Refer to previous ASX announcements for relevant
Jupiter project intersections and assay results.
• Standard element to oxide conversion factors have
been used and TREO was calculated on an
unrounded basis.
Relationship
between
mineralisation
widths and
intercept
lengths
• These relationships are particularly
important in the reporting of
Exploration results.
• If the geometry of the mineralisation
with respect to the drill hole angle is
known, its nature should be
reported.
• If it is not known and only the down
hole lengths are reported, there
should be a clear statement to this
effect (e.g. ‘down-hole length, true
width not known’
• The intersected clay and saprolite zones blanket
weathered granitoid basement such that downhole
thickness approximate true thickness.
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.
• Metallurgical sample locations are given in Table 1.
• Refer to previous Critica announcements to the ASX
for block model plans and sections, also available
from http://critica.limited.
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.
• Refer to previous ASX announcements for relevant
Jupiter project drill intersections and resource
estimation.
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
• Beneficiation of the bulk metallurgical composite was
conducted at the Centre of Science and Technology
of Minerals and Environment (GAVAQ), Vietnam as
previously announced by Critica Limited to the ASX
29 September 2025.
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