Wide High-Grade Gallium Intercepts at Cummins Range
Released
Released
Announcement PDF
ASX Release
6 August 2025
Wide High-Grade Gallium Intercepts at Cummins Range
Engage with this announcement at the RareX investor hub.
Highlights
•
A further 970 gallium re-assays have been received from 16 drill holes.
•
Significant gallium intercepts from re-assaying of pulps include:
o
115m at 146 g/t Ga2O3, 3.4% TREO and 369 g/t Sc2O3 from 22m, including 53m at 200 g/t Ga2O3, 5.51%
TREO and 588 g/t Sc2O3
o
86m at 125 g/t Ga2O3, 3.93% TREO and 283 g/t Sc2O3 from 4m, including 9m at 158 g/t Ga2O3, 2.77%
TREO and 428 g/t Sc2O3
•
Re-assaying continues with 26 drill holes remaining from the 2020 infill drilling.
•
Gallium is a highly strategic metal, supply constrained and with rapidly growing uses in high performance
chips for AI and other advanced applications. It is anticipated that the gallium market will grow 10x in 10years1.
RareX Limited (ASX: REE – RareX, or the Company) is pleased to announce further re-assaying results of the highgrade gallium at the Cummins Range carbonatite pipe. The gallium intercept of 115m at 146 g/t Ga2O3, including
53m at 200 g/t Ga2O3 is the widest high-grade intercept at Cummin Range so far and is an example of the
extraordinary gallium and rare earth grades in the deposit.
CEO and Managing Director, James Durrant, commented: “These latest assays confirm Cummins Range as one of
Australia’s most advanced and highest-grade gallium deposits. The consistency of high-grade results across multiple
holes and long intercepts removes any remaining doubt. Gallium is now a core value stream. We are advancing both
conventional and alternative processing pathways with Gega Elements, SGS Lakefield and others to unlock the full
value of the contained metals—rare earths, gallium, scandium and phosphate.”
Gallium grades are generally classified as follows: low-grade (30–50 g/t), moderate-grade (50–100 g/t), and highgrade (>100 g/t). Notable intercepts from the re-assaying of pulps include:
•
CRX0013 - 115m at 146 g/t Ga2O3, 3.4% TREO and 369 g/t Sc2O3 from 22m. Incl. 53m at 200 g/t Ga2O3,
5.51% TREO and 588 g/t Sc 2O3
•
CRX0010 - 86m at 125 g/t Ga2O3, 3.93% TREO and 283 g/t Sc2O3 from 4m, Incl. 9m at 158 g/t Ga2O3, 2.77%
TREO and 428 g/t Sc 2O3
•
CRX0019 - 45m at 93 g/t Ga2O3, 0.69% TREO and 175 g/t Sc2O3 from 93m, including 6m at 228 g/t Ga2O3,
1.7% TREO and 539 g/t Sc2O3
•
CRX0012 - 47m at 94 g/t Ga2O3, 1.18% TREO and 194 g/t Sc2O3 from 21m, including 9m at 158 g/t Ga2O3,
2.77% TREO and 428 g/t Sc2O3
1 https://www.factmr.com/report/gallium-
market#:~:text=Gallium%20Market%20Outlook%20(2024%20to%202034)&text=The%20market%20has%20been%20forecasted,element%20with%20atomic%20number%2031
Gallium at Cummins Range
Cummins Range carbonatite has a resource of 524Mt at 0.31% TREO, 4.6% P2O5 and 70 g/t Sc2O3, including a
higher grade resource of 44Mt at 1% TREO2. In March 2025, RareX identified that historical regolith RC drilling,
conducted between 2007 and 2012 by Navigator Resources and Kimberley Rare Earths, were mostly assayed for
gallium. A total of 11,487 assays for gallium were completed with 36% of the assays containing >40 g/t Ga 2O3 and
values up to 6,826g/t (0.68%). Details on the 2007-2012 drilling, including numerous high-grade intercepts are
described in the 25 March 2025 ASX release, “RareX Discovers High Grade Gallium at Cummins Range”.
Since RareX acquired the Project in 2019, 30,000m of drilling has been completed with no gallium assays done.
RareX have begun to re-assay the pulps from recent drilling starting with the 2020 infill drilling. In 2020, RareX
completed an infill drilling program designed to upgrade the inferred rare earths resource to an indicated resource
with a total of 58 drill holes for 6,146m of RC drilling completed.
A total of 2,080 assays from 29 drill holes have now been received and results have confirmed high-grade gallium
over wide intervals. The most elevated results are coincident with high-grade rare earth and scandium content that
have been upgraded due to a combination of residual or eluvial and chemical weathering. The exceptional gallium,
rare earths, and scandium results are continuing to elevate the critical metals significance of the Cummins Range
deposit.
Figure 1 shows section 307160E with gallium grades across 100m of the Rare Carbonatite Dyke. The mineralisation
is contained in the weathered saprolite zone. The location of the section and 2020 infill drill holes are shown on
Figure 2.
Figure 1. Section 307160E. Showing gallium intercepts at Cummins Range deposit. Section location is shown in Figure 2 and
intersection specifics are in Appendix 1.
2 ASX Announcement 25 January 2024 – Cummins Range Mineral Resource Estimate Update: Indicated 77.4Mt at 0.46% TREO, 6.7% P2O5 and 90g/t Sc2O3; Inferred 446.9Mt at 0.28% TREO, 4.2% P2O5
and 70g/t Sc2O3
Figure 2. Collar location plan showing carbonatite dykes 100m below surface. Also showing Section (Figure 1) location.
The Global Gallium Market
The global gallium market is dominated by China, which controls 98% of global gallium production.3
With the growth of electronics, semi-conductors and solar panels, it is anticipated the gallium market will grow
significantly from US$2.45 billion in 2024 to US$21.53 billion by 2034.4
Beyond China, production alternatives are limited. Russia ranks as the second-largest producer globally, but at a
mere 5 metric tons in 2022—representing just 0.81% of global production—its output is negligible compared to
China's dominance5. No other countries are significant producers of primary gallium, creating a near-monopoly
situation that heightens supply risk for importing nations.
3 https://www.mining.com/web/gallium-price-rises-to-highest-since-2011-following-china-export-curbs/; https://www.statista.com/statistics/1441110/primary-production-of-gallium-worldwide-by-
country/
4 https://www.factmr.com/report/galliummarket#:~:text=Gallium%20Market%20Outlook%20(2024%20to%202034)&text=The%20market%20has%20been%20forecasted,element%20with%20atomic%20number%2031
5 https://www.mining.com/web/gallium-price-rises-to-highest-since-2011-following-china-export-curbs/;
Expanding Demand Across Multiple Sectors
The demand for gallium has expanded dramatically across numerous high-tech sectors, contributing significantly
to the upward pressure on prices. The global gallium market is projected to grow from $2.32 billion in 2024 to $2.91
billion in 2025, representing a compound annual growth rate CAGR of 25.4% 6. More aggressive forecasts suggest
the market could reach $17.0 billion by 2032, expanding at a CAGR of 24.5% 7. Upward price pressure are likely to
persist as demand continues to expand across the semiconductor, telecommunications, defense, and renewable
energy sectors.
Price Increases and Market Dynamics
Gallium prices have experienced remarkable volatility and overall upward trajectory in recent years, influenced by
a complex interplay of supply constraints and growing demand. In December 2024, gallium prices surged to $575
per kilogram (delivered to Rotterdam), representing a 17% increase over previous levels and reaching the highest
point since 2011.8
The most significant factor driving recent price increases has been China's strategic export restrictions. Beijing
implemented initial controls on gallium exports in August 2023, which immediately disrupted global supply chains
and pushed prices higher. By December 2024, China had escalated these measures, announcing a comprehensive
ban on gallium exports to the United States, further intensifying market pressures. Since China accounts for
approximately 98% of global gallium production, these export restrictions have had outsized impacts on global
availability and pricing.
China's production advantage stems from its integration of gallium recovery with its massive aluminum industry,
as gallium is typically extracted from the alumina processing stream 9.
Gallium Applications
Semiconductor Applications and Integrated Circuits 10
The semiconductor industry represents the largest demand driver for gallium, with approximately 74% of gallium
imported into the United States during 2023 being used in integrated circuits. Gallium arsenide GaAs and gallium
nitride GaN compounds have become critical semiconductor materials across multiple industries, including hightech, automotive, aerospace, healthcare, and telecommunications sectors.
Gallium nitride semiconductors are particularly valuable due to their superior power density and heat resistance
properties. Traditionally used primarily in military applications, GaN is now finding increased adoption in
commercial applications including 5G networks, wireless infrastructure, power electronics, satellites, electric
vehicles, and consumer electronics. As one manufacturer noted, “GaN offers higher power density, more reliable
operation and improved efficiency over traditional silicon-only based solutions".
Optoelectronic Devices11
Approximately 25% of gallium consumption goes toward optoelectronic devices such as laser diodes, light-emitting
diodes LEDs , photodetectors, and solar cells. The rapid growth in popularity of electronic devices including mobile
phones, laptops, televisions, and lighting applications continues to drive demand in this segment. These
applications are particularly important for fiber optic communications and high-speed data transmission
technologies, which represent growth areas for the future.
6 https://blog.tbrc.info/2025/02/gallium-market-drivers-2/
7 https://www.persistencemarketresearch.com/market-research/gallium-market.asp
8 https://www.mining.com/web/gallium-price-rises-to-highest-since-2011-following-china-export-curbs/; https://www.mining.com/web/gallium-price-has-more-than-doubled-since-china-export-curbs/
9 https://www.fitechem.com/news/gallium-price-floor-set-to-rise-in-2021/
10 https://www.metaltechnews.com/story/2024/09/16/critical-minerals-alliances-2024/us-looks-for-domes tic-gallium-sources/1917.html
11 https://www.grandviewresearch.com/industry-analysis/gallium-market-report
Renewable Energy Applications12
The renewable energy sector represents an emerging but potentially massive source of gallium demand. Thin-film
solar panels rely heavily on gallium for their high efficiency, and as renewable energy adoption accelerates globally,
gallium requirements are expected to grow substantially. Europe alone is projected to consume up to 26 times
more gallium by 2030 compared to current levels, according to the Fraunhofer Institute.
The scale of potential demand is staggering—Austria's planned renewable energy projects, despite serving a
population of only 9 million, would require approximately 4.5 times the current global gallium production. This
statistic underscores the looming supply-demand imbalance as gallium becomes increasingly integral to both
energy independence and environmental commitments worldwide.
12 https://strategicmetalsinvest.com/gallium-prices/
Competent Person’s Statement
The information in this report that related to exploration results has been compiled and reviewed by Mr Guy Moulang. Mr
Guy Moulang is a full-time employee of RareX Limited and is a Member of the Australian Institute of Geoscientists and
has sufficient experience 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 the
Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code). Mr Guy Moulang consents to the
disclosure of the information in this report in the form and context in which it appears. The Mineral Resource Estimate
for the Cummins Range Project was reported in accordance with Listing Rule 5.8 on 25 January 2024 and the Company
confirms that it is not aware of any new information or data that materially affects the mineral resources estimate
included in the previous announcement and that all material assumptions and technical parameters underpinning the
mineral resource estimate in the previous announcement continue to apply and have not materially changed. The
historical exploration results referred to in this announcement were reported in accordance with Listing Rule 5.7 on 25
March 2025 and 24 June 2025. The Company confirms it is not aware of any new information that materially affects
these results.
Reference List
• https://www.factmr.com/report/galliummarket#:~:text=Gallium%20Market%20Outlook%20(2024%20to%202034)&text=The%20market%20has%20been%
20forecasted,element%20with%20atomic%20number%2031
• https://www.mining.com/web/gallium-price-rises-to-highest-since-2011-following-china-export-curbs/
• https://strategicmetalsinvest.com/gallium-prices/
• https://www.statista.com/statistics/1445285/gallium-share-of-production-worldwide-by-country/
• https://www.fitechem.com/news/gallium-price-floor-set-to-rise-in-2021/
• https://blog.tbrc.info/2025/02/gallium-market-drivers-2/
• https://www.persistencemarketresearch.com/market-research/gallium-market.asp
• https://www.metaltechnews.com/story/2024/09/16/critical-minerals-alliances-2024/us-looks-for-domes ticgallium-sources/1917.html
• https://www.grandviewresearch.com/industry-analysis/gallium-market-report
• https://www.statista.com/statistics/1441110/primary-production-of-gallium-worldwide-by-country/
• https://www.mining.com/web/gallium-price-has-more-than-doubled-since-china-export-curbs/
RareX is a critical minerals company specialising in rare earths and gallium, niobium as well as scandium in hard
rock carbonatites.
The exploration focus of the business is on the Mt Mansbridge xenotime heavy rare earths project near Browns
Range, the Khaleesi Project in the East Yilgarn which is a district-scale, elevated gallium & niobium, alkaline
intrusive complex, and the Cummins Range near-mine anomalies.
The Company’s engineering and commercial focus is on the mid-study-level, Cummins Range Project (+$330M
NPV post-tax*) - a carbonatite hosted rare earths and phosphate project, containing magnet grade rare earths
and battery grade phosphates, and substantial gallium and scandium. It is technically Australia’s largest
undeveloped rare earths project.
RareX have been curating a portfolio of carbonatite related projects including the newly acquired bulls-eye Piper
Project along trend from both Nolans Bore and the Luni niobium deposit. RareX will continue to develop and
optimise its portfolio.
RareX maintains material investments in Kincora Copper (ASX:KCC), Cosmos Exploration (ASX:C1X) and Canada
Rare Earth Corporation (LL.V).
For further information on the Company and its projects visit www.rarex.com.au
* The forecast financial information was released on 22 August 2023. The Company confirms that the material assumptions underpi nning the
production target and forecast financial information continue to apply and have not materially changed
Appendix 1: Significant Intercepts
Hole
From (m)
To (m)
Interval (m)
Ga2O3 g/t
TREO %
Sc2O3 g/t
Nb2O5 %
P2O5 %
CRX0007
43
49
6
48
0.25
77
0.07
6
Peak Ga2O3
Value
55
CRX0008
21
29
8
43
0.1
48
0.07
2
46
CRX0008
75
84
9
46
0.22
42
0.04
4
50
CRX0009
10
18
8
48
0.23
74
0.06
7
48
CRX0009
44
63
19
61
0.62
86
0.09
14
85
CRX0009
83
94
11
49
0.99
69
0.06
9
54
CRX0010
4
90
86
125
3.93
283
0.3
12
351
Incl.
25
46
21
160
4.21
291
0.32
8
351
Incl.
73
82
9
192
5.8
391
0.44
27
303
CRX0011
6
28
22
54
0.41
128
0.18
10
76
CRX0012
21
68
47
94
1.18
194
0.18
6
187
Incl.
21
57
36
109
1.45
238
0.21
6
187
Incl.
33
42
9
158
2.77
428
0.32
5
187
CRX0012
92
96
4
62
4.24
60
0.06
8
67
CRX0013
22
137
115
146
3.4
369
0.42
8
372
Incl.
57
110
53
200
5.51
588
0.7
10
372
CRX0015
14
58
44
68
0.47
116
0.16
4
145
Incl.
47
53
6
127
1.6
461
0.55
5
145
CRX0016
78
85
7
54
0.75
202
0.39
8
81
CRX0017
NSI
CRX0018
13
31
18
47
0.22
29
0.05
1
94
CRX0019
6
32
26
62
0.62
161
0.1
3
130
Incl.
15
25
10
86
0.89
226
0.14
3
130
CRX0019
93
138
45
93
0.69
175
0.19
8
287
Incl.
110
124
14
172
1.25
372
0.34
6
287
Incl.
114
120
6
228
1.7
539
0.36
5
287
CRX0027
6
108
102
55
0.5
93
0.02
18
90
Incl.
12
44
32
70
0.67
119
0.01
22
90
CRX0028
8
18
10
48
0.36
71
0.02
13
52
CRX0028
21
84
63
46
0.35
80
0.04
12
60
CRX0032
1
15
14
57
0.65
314
0.21
11
68
CRX0032
28
55
27
75
1.39
166
0.11
18
115
Incl.
39
42
3
108
2.25
205
0.19
17
115
CRX0032
63
73
10
85
3.56
295
0.22
15
154
Incl.
68
72
4
125
6.5
415
0.27
18
154
Drill Collar Details
Hole
East MGA
CRX0007
307217
CRX0008
307215
CRX0009
307209
CRX0010
307208
CRX0011
307210
CRX0012
307154
CRX0013
307156
CRX0015
307080
CRX0016
307079
CRX0017
307031
CRX0018
307031
CRX0019
307155
CRX0027
307400
CRX0028
307400
CRX0032
307313
North MGA
RL
End Depth (m)
Azimuth
Dip
7866568
7866615
7866692
7866731
7866770
7866729
7866773
7866770
7866809
7866750
7866831
7866813
7866863
7866820
7866740
391
391
392
391
391
391
391
391
391
391
391
391
391
391
391
102
96
114
126
102
120
138
96
126
84
84
162
108
114
96
180
180
180
180
180
180
180
180
180
180
180
180
180
180
180
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
Appendix 2: JORC Tables
Section 1: Sampling Techniques and Data
Criteria
JORC Code explanation
Commentary
Sampling
techniques
•
•
Navigator Resources (2007), 148 AC holes (4,510 m), 93
reverse circulation holes (RC) (9,293 m). Holes drilled 60°
towards south, 40 m spacing.
•
Kimberley Rare Earths (2012), 77 RC holes (4,229 m).
•
Navigator (NAV) Drilling NRC001-NRC0093 (drilled in
2007); 4 m composite spear samples were taken and
assayed. Assay intervals that returned results <1000 ppm
Ce were then resampled. The 10% cone splits from the drill
rig were then used for the 1m re-assays.
•
Kimberly Rare Earths (KRE) Drilling KRC094-KRC0170
(2012) – All drill meters were assayed on 1 m intervals using
a 10% cone split from the drill rig.
•
RareX Limited (2020), 58 RC holes (6,146 m). 1m samples
through mineralised zones and up to 4m composites in
unmineralized areas
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.
•
All RareX, Kimberley Rare Earth and rare earth mineralised
samples from Navigator were taken using the cone splitter
on the drill rig or a riffle splitter.
•
It is not documented how Navigator and Kimberly identified
mineralisation. Kimberly Rare Earths blanket assayed 1m
intervals and analysed for Gallium. Navigator blanket
assayed with 4m composites and did not include gallium.
Samples with >1000ppm Ce were re-assayed at 1m
intervals and did analyse for gallium.
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 drilling technique used was reverse circulation (RC)
drilling
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 2007-2012 samples (Navigator Resources and
Kimberley Rare Earths Ltd) were collected as both 4m
composites for initial assaying and 1m samples for follow
up assaying of anomalous zones. Most holes had good
sample recovery although a limited number of holes
encountered high ground water inflow and karst type
weathering in void formations at depth exceeding 40m.
Difficult drilling conditions including binding clays, voids
and water flow in several holes.
•
The 2020 infill drill program (RareX) involved drilling
between historic drillholes to test continuity of grade. The
program used a larger and more capable rig which resulted
Criteria
JORC Code explanation
Commentary
in good recoveries in most of the drilling with an averaged
of greater than 90% sample recovery.
Logging
Sub-sampling
techniques
and sample
preparation
•
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.
•
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.
•
No measures were described in the historical reports
regarding maximising sample recovery.
•
RareX ensured the cyclone was cleaned after every 3 m drill
run and where sticky clays were intersected, the driller
would lift the hammer off the bottom and clean the cyclone
after each metre. Wet samples were left open for water to
evaporate.
•
There doesn’t appear to be a relationship between sample
recovery/grade and sample bias. Although you can’t
calculate this from the data captured by KRE and NAV
•
All but three drill holes (NRC090-NRC093 for a total of 300
m) have had a geological log completed.
•
All of the above logs are quantitative with the exception of
geological logs in the regolith which can be qualitative.
•
The detail of logging is considered by the Competent
Person to be appropriate for Mineral Resource estimation.
•
Navigator Drilling NRC001-NRC0093 – 4m composite spear
samples were taken using a PVC spear. Assay intervals that
returned results <1000 ppm Ce were then resampled. The
10% cone splits from the drill rig were then used for the 1 m
re-assays. This sampling procedure and size is considered
appropriate for the grain size of the material being
sampled.
•
Kimberly Rare Earths (KRE) Drilling KRC094-KRC0170 - Drill
core were assayed on 1 m intervals using a 10% cone split
from the drill rig. This sampling procedure and size is
considered appropriate for the grain size of the material
being sampled.
Quality control procedures have not been documented by
NAV or KRE, other than what is described above.
•
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.
•
RareX:
CRX0001-CRX0058 – entire Bulk samples were split down
into 1-4 m composites using a 50/50 or 75/25 riffle splitter.
All samples were dry before splitting.
•
This technique is industry standard practice.
•
Field duplicates were taken at an average of 1 in 30 for the
RC drilling.
•
2020 Lab duplicates were also re-assayed.
Criteria
JORC Code explanation
Commentary
•
Sample sizes are regarded as being appropriate for this
style of mineralization.
Quality of
assay data
and laboratory
tests
Verification of
sampling and
assaying
Location of
data points
•
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.
•
Navigator – 4 m composites were taken at the drill rig and
sent to Intertek where a 4-acid digest, with ICP-OES and
ICP-MS finish (detection limit for gallium was 0.1ppm).
Where 4 m composites returned cerium assays >1000 ppm,
1 m re-assays were conducted on each of the metres in the
composites. The 1 m reassays were a peroxided fusion
digest with ICP-OES and ICP-MS finish. This technique is
considered as a total analysis for elements in consideration
for this resource. 40 elements were assayed for and
detection limit for gallium was 10ppm. Laboratory QA/QC
was completed with regular standards, blanks and repeats.
•
Kimberly Rare Earths used Intertek for the 1m assays using
peroxided fusion digest with ICP-OES and ICP-MS finish.
This technique is considered as a total analysis for
elements in consideration for this resource. 30 elements
were assayed for. Laboratory QA/QC was completed with
regular standards, blanks and repeats.
•
The results in this release were assayed using a 4 Acid
Digest with a ICP-MS finish. Regular assaying of standards,
duplicates and repeats were completed by the laboratory.
An alternate assaying method of peroxide fusion with ICP
finish was also completed on 26 check samples.
•
The quality of control procedures adopted by the
laboratories are in line with industry standards and
acceptable levels of accuracy and precision have been
established throughout the generations of assaying.
•
The verification of significant intersections
by either independent or alternative
company personnel.
•
Reported results have not been verified by either an
independent or alternative company personnel.
•
•
Twinned holes have been drilled
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.
Data in the announcement has been captured from
historical database from NAV and KRE. Geological data is
of high quality, and it is assumed these companies
followed industry standard procedures and protocols
when collecting and storing data.
•
The assay results have been converted into oxides using
the below stochiometric conversion factors: Ga2O3 1.3442,
La2O3 1.1728, CeO2 1.2284, Pr6O11 1.2082, Nd2O3 1.1664,
Sm2O3 1.1596, Eu2O3 1.1579, Gd2O3 1.1526, Dy2O3 1.1477,
Ho2O3 1.1455, Er2O3 1.1435, Tm2O3 1.1421, Yb2O3 1.1387,
Lu2O3 1.1371, Sc2O3 1.5338, Y2O3 1.2699, Nb2O5 1.4305,
P2O5 2.2916
•
Drill hole collars have been surveyed with a DGPS and have
and accuracy of 100 mm.
•
Collar coordinates are in MGA Zone 52H 2020 and have
been converted from MGA94 and AMG84 grids.
•
Accuracy and quality of surveys used to
locate drillholes (collar and downhole
surveys), trenches, mine workings and
other locations used in Mineral Resource
Criteria
JORC Code explanation
estimation.
Data spacing
and
distribution
•
Specification of the grid system used.
•
Quality and adequacy of topographic
control.
•
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.
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.
Sample
security
•
The measures taken to ensure sample
security.
Audits or
reviews
•
The results of any audits or reviews of
sampling techniques and data.
Commentary
•
Topographic control has been established from surveyed
drill collars and are within 100 mm. The Cummins Range
deposit is located on flat terrain.
•
Drill hole spacing is considered appropriate to gain a robust
understanding of the mineralisation. The RareX exploration
team are seeing the same geological positions for
mineralisation in each drilling campaign, suggesting RareX
have a solid geological model. Drill spacing is considered
appropriate to support an Inferred and Indicated Mineral
Resource estimate.
•
4m drill composites were used by NAV. Where 4 m
composites returned cerium assays >1000 ppm, 1 m reassays were conducted on each of the metres in the
composites.
•
Navigator (NRC0001-NRC0093), Kimberley Rare Earths
(KRC0094-KRC0170) and RareX 2020 drill holes (CRX0001CRX0048, CRX0050-CRX0058) were drilled at an acute
angle to the dominant orientation of the fresh rock rare
earths mineralisation. These drill holes are
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