TIDMCCZ
RNS Number : 0385W
Castillo Copper Limited
13 April 2023
13 April 2023
CASTILLO COPPER LIMITED
("Castillo", or the "Company")
MREO focused metallurgical test-work underway by ANSTO
Castillo Copper Limited (LSE and ASX: CCZ), a base metal
explorer primarily focused on copper across Australia and Zambia,
is pleased to announce that it has appointed specialist consultant,
the Australian Nuclear Science and Technology Organisation
("ANSTO")(1) , to undertake metallurgical test-work on six samples
from Fence Gossan, Reefs and Tors Tanks Prospects within the BHA
Project's East Zone.
HIGHLIGHTS:
-- Specialist consultant, ANSTO(1) , has been appointed to
undertake comprehensive metallurgical test-work on six samples from
Fence Gossan, Reefs and Tors Tanks Prospects (BHA Project's East
Zone) to understand the potential to extract Rare Earth Elements
("REE") from shallow clay zones; results should take 8-10 weeks
-- The scope of work will focus on characterising REE
leachability from the six samples which comprise fresh pegmatite to
highly weathered clay, especially with Magnetic Rare Earth Oxide
("MREO") grades ranging from 362-603ppm (refer Appendix A)
-- This is an important step towards advancing the viability of
the BHA Project's East Zone REE potential and securing interest
from prospective development partners, especially given the extent
of high-value MREO (Nd+Pr+Dy+Tb) within the system
-- To recap, the best RC and diamond core assay result
intercepts from Tors Tank and Fence Gossan - across the shallow,
clay-hosted, REE system(2) - were:
o 13m @ 1,550ppm Total Rare Earth Oxides (TREO) from 5m; 38.9%
MREO (TT_005DD)(2) of the TREO grade vs 25% peer average(3)
o 17m @ 1,605ppm TREO from 2m; 28.6% MREO & 1m @ 3,236 TREO
from 19m; 28.9% MREO (FG_003RC)(2)
o 10m @ 1,013ppm TREO from 49m; 24.7% MREO (FG_001RC)(2)
o 6m @ 1,480ppm TREO from 7m; 28.9% MREO (FG_004RC)(2)
o 5m @ 1,598ppm TREO from 14m; 29.1% MREO (TT_002RC)(2)
-- Meanwhile, work on the Big One Deposit optimisation study and
updating the Cangai Copper Mine Mineral Resource Estimate is
progressing on schedule.
Ged Hall, Chairman of Castillo Copper, said: "The Board is
delighted ANSTO is conducting specialist metallurgical test-work on
samples from the BHA Project's East Zone. Understanding the
potential to extract REE mineralisation, especially MREOs, will
greatly assist in our efforts to align with a future development
partner. Pleasingly, the work done to date clearly confirms there
is an extensive shallow REE system across the central part of the
BHA Project's East Zone."
ANSTO UNDERTAKING METALLURGICAL TEST-WORK
The scope of work that ANSTO will perform is designed to provide
a deeper understanding of the following:
-- The potential to extract REE mineralisation from shallow clay zones;
-- Characterising the REE leachability from the six samples
which comprise fresh pegmatite to highly weathered clay; and
-- Separating out high-value MREO (Nd+Pr+Dy+Tb) as the grades in
the samples range from 362-603ppm MREO (Figure 1).
FIGURE 1: COMPOSITE SAMPLE DESCRIPTIONS FOR ANSTO TEST
PROGRAMME
Drillhole Sample Number(s) From To Thick. Comments on samples
(m) (m) (m)
================== ====== ====== =======
MREO = 466 ppm; highly
TT_002RC CCZ03888-92 14.00 19.00 5.00 weathered clay
================== ====== ====== ======= =======================
MREO = 603 ppm; highly
TT_005DD CCZ04936-49 5.00 18.00 13.00 weathered clay
================== ====== ====== ======= =======================
MREO = 459 ppm; highly
FG_003RC CCZ04513-30 2.00 20.00 18.00 weathered clay
================== ====== ====== ======= =======================
MREO = 427 ppm; highly
FG_004RC CCZ04686-91 7.00 13.00 6.00 weathered clay
================== ====== ====== ======= =======================
MREO = 466 ppm; highly
RT_001RC CCZ03819-21 14.00 17.00 3.00 weathered clay
================== ====== ====== ======= =======================
MREO = 362 ppm; fresh
RT_001RC CCZ04869 64.00 65.00 1.00 pegmatite
================== ====== ====== ======= =======================
Note: MREO elements (Nd+Pr+Dy+Tb)
Source: REE Analyses using ALS Method ME-MS81
The Board believes this is a crucially important step towards
materially advancing the viability of the BHA Project's East Zone.
Furthermore, robust metallurgical test-work results for high-value
MREO mineralisation should aid securing interest from prospective
development partners.
Assay result recap
To recap, diamond core drill-hole from the Tors Tank Prospect
returned an excellent assay result:
-- 13m @ 1,550ppm TREO from 5m; 38.9% MREO (TT_005DD)(2)
Notably, the high value MREO reading was well above the 25%
average among the peer group(2) .
Re-assays of 1m samples from the Tors Tank and Fence Gossan
Prospects re-affirmed high MREO percentages (Figure 2) and provided
clearer evidence there is an extensive, shallow REE mineralisation
system across the centre of the BHA Project's East Zone (refer
Appendix B & C).
FIGURE 2: BEST "RC" INTERCEPTS TORS TANK / FENCE GOSSAN
Hole From (m) To (m) Width TREO (ppm) MREO (%)
(m)
========= ======= ====== ===========
TT_001RC 25 27 2 1,048 27.1%
========= ======= ====== =========== =========
TT_002RC 14 19 5 1,598 29.1%
========= ======= ====== =========== =========
TT_003RC 4 11 7 890 34.6%
========= ======= ====== =========== =========
12 13 1 1,103 28.4%
========= ======= ====== =========== =========
15 17 2 3,491 24.6%
========= ======= ====== =========== =========
FG_001RC 8 20 12 907 31.0%
========= ======= ====== =========== =========
49 59 10 1,013 24.7%
========= ======= ====== =========== =========
FG_002RC 11 16 5 1,065 28.9%
========= ======= ====== =========== =========
FG_003RC 2 19 17 1,605 28.6%
========= ======= ====== =========== =========
19 20 1 3,236 28.9%
========= ======= ====== =========== =========
FG_004RC 7 13 6 1,480 28.9%
========= ======= ====== =========== =========
28 32 4 1,342 22.9%
========= ======= ====== =========== =========
Source: CCZ geology team
In addition, hand auger surface sampling assays delineated a
sizeable (circa 4.5km(2) ) anomalous REE zone around the Fence
Gossan Prospect.
For further information, please contact:
Castillo Copper Limited +61 8 6558 0886
Dr Dennis Jensen (Australia), Managing Director
Gerrard Hall (UK), Chairman
SI Capital Limited (Financial Adviser and
Corporate Broker) +44 (0)1483 413500
Nick Emerson
Gracechurch Group (Financial PR) +44 (0)20 4582 3500
Harry Chathli, Alexis Gore, Henry Gamble
About Castillo Copper
Castillo Copper Limited is an Australian-based explorer
primarily focused on copper across Australia and Zambia. The group
is embarking on a strategic transformation to morph into a mid-tier
copper group underpinned by its core projects:
-- A large footprint in the Mt Isa copper-belt district,
north-west Queensland, which delivers significant exploration
upside through having several high-grade targets and a sizeable
untested anomaly within its boundaries in a copper-rich region.
-- Four high-quality prospective assets across Zambia's
copper-belt which is the second largest copper producer in
Africa.
-- A large tenure footprint proximal to Broken Hill's
world-class deposit that is prospective for
zinc-silver-lead-copper-gold and platinoids.
-- Cangai Copper Mine in northern New South Wales, which is one
of Australia's highest grading historic copper mines.
The group is listed on the LSE and ASX under the ticker
"CCZ."
Competent Person's Statement
The information in this report that relates to Exploration
Results for "BHA Project, East Zone" is based on information
compiled or reviewed by Mr Mark Biggs. Mr Biggs is a director of
ROM Resources, a company which is a shareholder of Castillo Copper
Limited. ROM Resources provides ad hoc geological consultancy
services to Castillo Copper Limited. Mr Biggs is a member of the
Australian Institute of Mining and Metallurgy (member #107188) and
has sufficient experience of relevance to the styles of
mineralisation and types of deposits under consideration, and to
the activities undertaken, to qualify as a Competent Person as
defined in the 2012 Edition of the Joint Ore Reserves Committee
(JORC) Australasian Code for Reporting of Exploration Results, and
Mineral Resources. Mr Biggs holds an AusIMM Online Course
Certificate in 2012 JORC Code Reporting. Further, Mr Biggs consents
to the inclusion in this report of the matters based on information
in the form and context in which it appears.
References
1) ANSTO. Available at: https://www.ansto.gov.au/services/resources-sector/minerals
2) CCZ ASX Release - 23 November 2022, 15 & 28 February 2023
3) Nelson, S. "Rare earths rush showed no signs of abating in Q4
2022" 6 February 2023. Available at:
https://www.proactiveinvestors.com.au/companies/news/1005217/rare-earths-rush-showed-no-signs-of-abating-in-q4-2022-1005217.html
Appendix References:
4) Total REE extraction is not necessarily the best indicator as
the individual REE's will likely dissolve to different extents, and
the value of the individual REE's varies significantly (the most
valuable are Nd, Pr, Tb, and Dy).
5) Mt Weld, Peak Resources, Arafura, Northern, Hastings and Iluka.
6) Hydrochloric acid is an alternative, but sulfuric acid is preferred based on cost.
7) Higher temperatures can be tested in further work, but higher
temperature accelerates gangue dissolution and adds to costs,
particularly for a low-grade clay feed at a relatively low slurry
density. Clay processing is probably limited to a slurry density of
35 wt%.
8) NaCl and MgSO4 are also potential adsorbents, but ammonium
sulphate is typically the best for a true ionic clay. Other options
could consider the concentration being decreased. These are
possible options for later stages of testing.
APPIX A: METALLURGY TESTING AT ANSTO STARTED
BACKGROUND AND SCOPE
Castillo recently identified clay-hosted REE mineralisation
across the Fence Gossan, Tors and Reefs Tanks Prospects. Since
then, initial flotation tests show the REE minerals can be
separated from the clays and hard rock (such as monazite) by
flotation to produce a higher-grade concentrate (2-3 times REE
enrichment). The next step in this process is to develop an
understanding of the potential to extract the REE's contained in
the clay zones.
Castillo has engaged ANSTO to progress a work programme that
characterises the REE/clay mineralisation with respect to
leachability for six samples ranging from fresh pegmatite to highly
weathered clay (see Figure A1). Note, the MREO (Magnetic REE's -
Pr, Nd, Tb, Dy) grades of the samples supplied vary from 362 -- 603
ppm.
FIGURE A1: COMPOSITE SAMPLE DESCRIPTIONS FOR ANSTO TEST
PROGRAMME
Drillhole Sample Number(s) From To Thick. Comments on samples
(m) (m) (m)
================== ====== ====== =======
MREO = 466 ppm; highly
TT_002RC CCZ03888-92 14.00 19.00 5.00 weathered clay
================== ====== ====== ======= ===========================
MREO = 603 ppm; highly
TT_005DD CCZ04936-49 5.00 18.00 13.00 weathered clay
================== ====== ====== ======= ===========================
MREO = 459 ppm; also,
Preliminary Met ALS Perth
sample; highly weathered
FG_003RC CCZ04513-30 2.00 20.00 18.00 clay
================== ====== ====== ======= ===========================
MREO = 427 ppm; highly
FG_004RC CCZ04686-91 7.00 13.00 6.00 weathered clay
================== ====== ====== ======= ===========================
MREO = 466 ppm; highly
RT_001RC CCZ03819-21 14.00 17.00 3.00 weathered clay
================== ====== ====== ======= ===========================
MREO = 362 ppm; fresh
RT_001RC CCZ04869 64.00 65.00 1.00 pegmatite
================== ====== ====== ======= ===========================
Note: MREO elements (Nd+Pr+Dy+Tb)
Source: REE Analyses using ALS Method ME-MS81
Key questions to answer are the proportion of ionically adsorbed
REEs and potential for increased extraction by a simple direct acid
leaching approach.
OBJECTIVES OF THE WORK PROGRAMME
The main objective of the work programme is to assess the
leachability of REEs from clay samples over a range of pHs. The
specific tasks in the scope are:
1. Drying of as-received samples and preparation for compositing, assay, and leach tests.
2. Head assays on six samples (XRF, fusion digest/MS).
3. Carry out a diagnostic leach on the six samples using ammonium sulphate (AS) at pH 4.
4. Carry out a diagnostic leach tests on six samples using
ammonium sulphate at pH 1 (in sulfuric acid).
5. Provision of a data pack, with a summary note and discussion of the main findings.
Chondrite normalised plots below (Figure A2) for two individual
samples from the composites listed in Figure A1 shows the assays
plot as expected, and the slope of the plot is typical for this
deposit type. Figure A2 would tend to indicate the REEs are not
solely present as monazite.
FIGURE A2: CHONDRITE NORMALISED PLOTS FROM TWO FENCE GOSSAN
SAMPLES
Source: Ansto 2023
CLAY REE DEPOSITS
The so-called REE ionic clay deposits ("IADs") are commercially
leached in China and Myanmar as a major source of heavy REEs. A
feature of the IADs is the REE's are present as physically adsorbed
ions which can be readily solubilised by displacing the REE ions
with an appropriate cation. Typical desorption conditions are
contact with 0.3-0.5 ammonium sulphate at pH 4-5 for 30 minutes at
ambient temperature, 20-30 wt% solids. Under these conditions up to
70% extraction (typically 40-60%) of the TREO + Y can be obtained,
with very little dissolution of gangue elements, which makes for
simple downstream processing to produce a mixed REE carbonate.
Over the last few years, there have been numerous reports of
elevated concentrations of REE's associated with clays, but in most
cases the deposits have not proven to be of the classic ionic clay
type, and a lower pH has been found to be necessary to dissolve the
REE's. Under these circumstances, the economics of the process will
depend on REE extraction, acid consumption and the concentrations
of dissolved gangue elements.
The objective of the current studies is to obtain an initial
indication of potential economic viability by leaching under
desorption conditions (pH 4) and a lower pH to determine REE
extraction(4) versus gangue dissolution.
ANSTO: BACKGROUND IN RE PROCESSING
The minerals group at ANSTO has extensive experience in REE
process development, with several experts in their organisation
having >30 years' experience that dates back to some early work
on the Mt Weld deposit (monazite mineralogy) in the early 1990s.
Over the last 10 to 15 years, ANSTO has worked on numerous REE
projects both in terms of process development, piloting(5) and
providing expert advice.
ANSTO have experience in the processing of monazite, bastnasite,
and xenotime, as well as from less frequently exploited REE sources
such as apatite, ionic clays and complex ores containing
zirconium/niobium silicates. Further, ANSTO have undertaken process
development work for clients in Australia and across the globe.
Their work has included all facets of REE process flowsheets,
including acid leaching, sulfation baking, caustic conversion,
alkaline roasting, selective precipitation, impurity removal,
solvent extraction, ion exchange, process water treatment
(softening) and chemical concentrate production. Incrementally,
ANSTO are experts in the deportment and the management of
radioactivity in the REE process flowsheets, and all radionuclide
analyses are carried out in-house (as well as standard REE
elemental assays).
PROPOSED APPROACH
Desorption response
Diagnostic tests (pH 4) will be carried out on the six supplied
samples under classic ionic clay conditions to confirm extractions.
This is recommended as the ability to use desorption conditions
would have many advantages.
Leach response
A diagnostic test will be carried out with ammonium sulphate at
pH 1 on all 6 samples to determine if the REEs can be extracted at
"moderate" acidity. Conditions will be ammonium sulphate+ sulfuric
acid(6) at pH1 for 2h at ambient temperature(7) . Note, pH 1
conditions will indicate a limit for extraction, with economic
conditions likely to be at a higher pH (preferably pH 4). Note,
that pH 1 conditions will not dissolve primary REE minerals such as
monazite or xenotime.
All diagnostic tests are carried out on pulverised samples at
high L/S ratio, where there are no effects of adsorption,
co-precipitation etc. These tests will indicate the maximum
extraction that could be achieved under the test conditions (at
more practical lower L/S ratios, extraction could be less). Slurry
leach tests are not recommended at this stage as several other
variables are introduced, which would need some degree of
optimisation that is not warranted at this early stage of the
work.
WORK PROGRAMME
Sample preparation
The samples are composites from drill holes in the three
prospects in the East Zone. The supplied samples will be dried at
50 deg C to constant weight, crushed to < 1 mm, if necessary. A
250-500 g sub-sample will then be taken, pulverised, and split into
representative portions for head assay and leach tests. The
remainder of the composites will be stored.
Sample characterisation
The head samples (dried at 105degC) will be analysed by a
combination of XRF (in-house) and fusion digest/ICP--MS (ALS,
Brisbane) for the following elements:
-- XRF - Al, Ca, Cu, Fe, K, Mg, Mn, Na, P, S, Si, Zn
-- Digest/ICP-MS - Ag, Ce, Co, Dy, Er, Eu, Gd, Ho, La, Lu, Nd,
Pb, Pr, Sc, Sm, Tb, Th, Tm, U, Y, Yb
LEACH TESTS
Desorption conditions
Diagnostic leach tests on all samples will be conducted under
following desorption conditions:
-- 0.5 M ammonium sulphate(8) as lixiviant;
-- pH 4.
-- 0.5 h.
-- Ambient temperature (22 deg C); and
-- 4 wt% solids density.
Prior to commencing the leach test-work, a bulk solution of AS
will be prepared, and the pH will be adjusted to the appropriate
target using H(2) SO(4) .
All tests will be conducted on 80g of dry (dried at 50degC),
pulverised sample and 1,920g of the lixiviant in a 2L titanium/
stainless steel baffled leach vessel equipped with an overhead
stirrer. No thief samples will be taken. The pH for the duration of
the test will be maintained by addition of 1M H(2) SO(4) , if
necessary.
At the completion of each test, the slurry will be vacuum
filtered to separate the leach liquor. The final residue solids
will be thoroughly water washed on the filter with 200mL of DI
water, and dried at 105degC. The individual REE recoveries for each
sample will be calculated using the measured head and the final
leach liquor composition. The final leach liquors will be analysed
as follows:
-- ICP-MS for Ag, Ce, Co, Dy, Er, Eu, Gd, Ho, La, Lu, Nd, Pb,
Pr, Sc, Sm, Tb, Th, Tm, U, Y, Yb (ALS).
-- ICP-OES for Al, Ca, Cu Fe, K, Mg, Mn, Na, P, S, Si, Zn (in-house).
The water wash will be collected, and a sub-sample will be
stored but not analysed. The final washed residue will be stored,
but not analysed.
Acid leach conditions
A diagnostic leach tests will be conducted on all samples under
the following conditions:
-- 0.5 M ammonium sulphate as lixiviant.
-- pH 1.
-- 2 h.
-- Ambient temperature (22 deg C); and
-- 4 wt% solids density.
The leach will be conducted on a pulverised sample. Sulfuric
acid will be added to control pH. Prior to commencing the leach
test work, a bulk AS solution will be prepared, and the pH adjusted
to the target using H(2) SO(4) .
Each of the leach tests will be conducted on 80g of dry,
pulverised sample and 1,920 g of the lixiviant in a 2L titanium/
stainless steel baffled leach vessel equipped with an overhead
stirrer. No thief samples will be taken during the tests. The pH
for the duration of the test will be maintained by addition of conc
H(2) SO(4) , if necessary. The acid addition for each test will be
measured.
At the completion of each test, the slurry will be vacuum
filtered to separate the leach liquor. The final residue solids
will be thoroughly water washed on the filter with 200mL of DI
water, and dried at 105degC. The individual final RE recoveries
will be calculated using the head and the final leach liquor
composition, and the head and leach residue assays.
The final liquor samples will be analysed as indicated in Gangue
element concentrations will give an indication of acid
consumption.
The leach residue samples will be analysed by XRF (at ANSTO) and
digest/ICP-MS (lithium tetraborate method) at ALS, for the elements
specified in the sample characterisation section. The water wash
will be collected, and a sub-sample will be stored but not
analysed.
APPIX B: ALS PERTH FG COMPOSITE 1M DATA
One of the samples delivered for the ANSTO sampling and testing
programme is over the same interval as the composite sample used
for the ALS Perth hard rock metallurgy programme.
This comprised a composite sample of RC chips from Fence Gossan
drillhole FG_003RC was constructed over the interval from 0-20m
(reference). The material reported over that interval had lithology
logged as clay, haematite, goethite, and extremely weathered
pegmatite. The main hard rock rare earth element-containing
minerals are thought to be monazite, allanite, xenotime, and maybe
baryte or celsian (to account for the high barium contents of some
samples).
These assumptions need to be tested by XRD and/or QEM-SEM
testing. The composite was made up of 1m samples tested using
ME-MS81 analysis method (the results for which are provided in
Figure B1).
FIGURE B1: DRILLHOLE FG_003RC - 0 TO 20M COMPOSITE USED FOR ALS
PERTH METALLURGICAL TESTING, 1M ANALYSIS
Sample From Length PGM-MS23 PGM-MS23 PGM-MS23 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81 ME-MS81
Number To
Au Pt Pd Ba Ce Cr Cs Dy Er Eu Ga Gd Hf Ho La Lu Nb Nd Pr Rb Sc Sm Sn Sr Ta Tb Th Ti Tm U V W Y Yb Zr
===== === ======= ========= ========= ========= ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ========
m m m ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm ppm ppm
===== === ======= ========= ========= ========= ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ======== ========
CCZ04511 0 1 1 0.002 0.001 0.002 297 131 61 3.13 6.48 3.92 1.71 23.5 7.17 5.56 1.35 70 0.58 10.85 54.8 16.1 67.5 16.4 10.3 3.2 128 0.9 1.18 12.85 0.49 0.59 4.02 190 3.1 37 3.69 223
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CCZ04512 1 2 1 0.006 0.0013 0.003 910 172.5 73 2.58 7.57 4.05 2.16 38.1 8.71 4.09 1.52 97.5 0.46 10.55 74.2 21 51.2 20 12.35 2.4 180 0.8 1.28 13.65 0.41 0.55 7.54 247 4 35.3 3.39 134
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CCZ04513 2 3 1 0.004 0.0011 0.002 648 696 71 2.64 20.9 9.3 9.12 46.2 34.4 4.18 3.6 409 0.93 12.75 347 94.2 51.7 19.4 52.8 3.2 126 1 4.53 14.55 0.38 1.18 15.65 191 4.4 76.9 7.01 137
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CCZ04514 3 4 1 0.002 0.0007 0.001 166.5 580 72 5.2 17.85 6.75 7.5 55.9 28.5 3.02 2.76 369 0.54 10.4 276 74.4 92.2 37.5 41.8 3.5 129.5 1 3.79 16.3 0.33 0.84 13.85 171 2.8 50.3 5.02 109
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CCZ04515 4 5 1 0.002 0.0007 0.001 143 511 80 5.01 16.35 6.43 6.46 51.2 25.9 3.39 2.67 336 0.63 13.85 252 67.4 89.1 27.5 38.7 4.3 109.5 1.2 3.52 14.95 0.4 0.78 12.5 178 2.8 53.6 5.09 110
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CCZ04516 5 6 1 0.001 0.0008 0.001 98.4 376 75 3.04 10.5 3.86 3.91 53.5 17.5 3.05 1.62 229 0.36 12.8 175.5 46.6 51.2 14.7 25.9 3.5 91.3 1.1 2.28 16.25 0.38 0.55 7.46 129 3.7 30.9 2.88 100
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CCZ04517 6 7 1 <0.001 0.0008 0.001 91.9 480 76 3.89 13.75 4.51 5.55 54.5 22.4 3.37 2.03 293 0.47 11.9 221 59.8 78.9 14.7 33.2 2.6 99.1 1 2.98 16.35 0.34 0.57 9.41 106 4.3 35.8 3.23 110
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CCZ04518 7 8 1 <0.001 0.0007 0.001 59.1 332 90 3.2 8.64 3.14 3.43 60.5 14.3 3.18 1.33 204 0.28 15.4 142.5 39.3 79.8 11.6 22.6 3.2 101 1.2 1.88 18.25 0.38 0.38 7.65 102 6.3 25.5 2.31 107
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CCZ04519 8 9 1 <0.001 0.0007 0.001 87.2 422 88 5.13 12.5 5.17 4.67 53.4 19 2.97 2.05 258 0.6 12.55 184.5 49.7 121 16.7 29 3.6 100 1.2 2.58 14.9 0.35 0.71 10.7 140 3 43.1 4.57 99
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CCZ04520 9 10 1 <0.001 0.0008 0.001 94.5 287 78 5.62 7.68 3.76 2.49 56.5 10.55 2.62 1.37 175 0.49 13.2 116.5 31.3 160.5 19.6 16.3 3.5 84.7 1.1 1.5 14.3 0.32 0.55 8.74 150 2.2 28.2 4.08 87
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CCZ04521 10 11 1 0.001 0.0007 0.001 110.5 366 81 6.57 8.9 4.09 3.31 48.3 14.05 2.56 1.69 231 0.55 10.95 145.5 42.6 196 20.4 21.6 4.1 89.8 0.9 1.96 14.5 0.31 0.59 12.1 149 1.7 33.6 3.97 87
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CCZ04522 11 12 1 <0.001 0.0007 0.001 118.5 384 90 6.47 12.3 6.33 3.66 58.3 16.7 2.95 2.2 258 0.92 13.1 158.5 43.4 171.5 20.2 24 3.7 117 1.1 2.28 19.6 0.34 0.96 15.85 149 3.5 50.9 6.62 99
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CCZ04523 12 13 1 <0.001 0.0007 0.001 88.6 292 85 3.63 9.33 5.15 2.71 57.2 12.45 3.51 1.79 202 0.61 12.7 117 32.1 108.5 21.4 16.55 3.1 98.9 1.1 1.79 17.65 0.34 0.73 11.2 101 6.3 38.4 4.72 116
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CCZ04524 13 14 1 <0.001 0.0007 0.001 98.8 318 81 5.38 12.6 5.77 4.14 56.9 17.65 2.9 2.28 233 0.68 13.15 145.5 38.3 131 20.4 22.3 5 103.5 1 2.28 17.3 0.33 0.79 12.5 136 4 49 4.78 97
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CCZ04525 14 15 1 <0.001 0.0009 0.001 45.7 486 91 4.58 17.9 6.78 5.7 63 28.4 3.06 2.93 341 0.61 12.45 222 59.1 98.8 15.7 35.2 4.3 88.2 1.1 3.64 18.45 0.36 0.81 14.2 170 3.5 57 5 95
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CCZ04526 15 16 1 <0.001 0.0008 0.001 69.4 577 71 9.24 29 13.5 7.19 61.2 38.1 3.58 5.31 427 1.5 11.4 266 68.9 143.5 19.2 41.5 4.3 81.2 1 5.56 18.25 0.31 1.78 20.7 184 2.7 115.5 11.75 113
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CCZ04527 16 17 1 0.001 0.0025 0.002 53.4 453 67 5.76 23.3 11.35 5.34 47.1 28 4.04 4.32 322 1.29 10.1 195 50.9 84.4 17.6 30.9 3.5 64.9 0.9 4.24 12.7 0.27 1.54 19.1 147 3.6 95.8 9.92 142
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CCZ04528 17 18 1 0.003 0.0017 0.002 118 698 53 17.75 30.3 14.65 7.91 48.2 40.5 1.46 5.72 466 1.5 5.57 303 81.5 139.5 17.8 47 3.8 51.4 0.4 5.61 6.91 0.15 1.98 38.1 498 4.2 137 12.55 53
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CCZ04529 18 19 1 0.045 0.002 0.002 109 774 54 6.11 42.4 16.05 12.35 40.3 60.8 1.61 6.9 644 1.36 6.51 425 106.5 52 38.5 66 5.7 110 0.4 8.47 4.76 0.74 1.94 73.4 580 3 128 11.6 50
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CCZ04530 19 20 1 0.005 0.0011 0.001 193 661 60 2.69 104.5 69.3 15.6 25.8 100 2.98 23.8 597 8.34 7 403 94.2 32.7 41.9 72.2 1.5 146 0.4 16 1.57 1.11 9.13 48.7 442 1.1 722 57.8 94
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Average 180.0 449.8 74.9 5.4 20.6 10.2 5.7 50.0 27.3 3.2 3.9 308.1 1.1 11.4 211.2 55.9 100.1 21.6 33.0 3.6 105.0 0.9 3.9 14.2 0.4 1.3 18.2 208.0 3.5 92.2 8.5 108.1
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Notes:
1. Source: ALS Adelaide methods ME-MS81 and PGM-MS23 used.
2. Drillhole FG_003RC drilled October 2022.
APPENDIX C: BHA PROJECT'S EAST ZONE
FIGURE A1: BHA PROJECT's EAST ZONE - REE EXPLORATION
FOOTPRINT
Source: CCZ geology team
FIGURE A2: BHA PROJECT
Source: CCZ geology team
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END
MSCITMLTMTMBBBJ
(END) Dow Jones Newswires
April 13, 2023 02:00 ET (06:00 GMT)
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