Outstanding result of 455m at 0.5% TREO and 5% P2O5
Released
Released
Announcement PDF
ASX Release: 5 October 2022
OUTSTANDING NEW DRILL INTERCEPTS AT CUMMINS RANGE:
455m at 0.5% TREO and 5% P2O5 & 326m at 0.4% TREO and 4% P2O5
Latest diamond holes further expand the rare earths and phosphate mineralisation at depth,
demonstrating strong potential to expand the current 18.8Mt Resource
HIGHLIGHTS
•
•
•
•
Assays for next two diamond holes set new records at the Cummins Range Rare Earths and
Phosphate deposit:
o 455.6m at 0.5% TREO and 5% P2O5 returned in CDX0027, with multiple high-grade rare
earths intersections above 0.5% TREO cumulatively 100.4m at 1.9% TREO including 17m
at 2.4% TREO from CDX0027
o 326.4m at 0.4% TREO and 4% P2O5 returned in CDX0022 with multiple high-grade rare
earths intersections above 0.5% TREO cumulatively 60.5m at 1.8% TREO including 6.2m
at 4.2% TREO
Results follow the previous record intercept of 384.4m at 4% P2O5 and 0.4% TREO in CDX0020,
reported on 20 September
Rare Dyke is strongly mineralised to 500m down-dip with a >450m wide rare earths and
phosphate mineralised alteration halo
Drilling continues at Cummins Range with over 15,000m completed
Further to its announcement of 20 September 2022, RareX Limited (RareX, the Company) (ASX: REE)
advises that assays have been received for a further two diamond drill-holes, CDX0022 and CDX0027,
at its 100%-owned Cummins Range Rare Earths and Phosphate Project in the Kimberley region of
Western Australia (the Project, Cummins Range).
Both holes returned very wide rare earths and phosphate intersections, building on the record
intercept reported on 20 September 2022 and continuing to demonstrate the scale and potential of
the Cummins Range Project.
The latest results include: 455.6m at 5% P2O5 and 0.5% TREO and multiple high-grade rare earths
intersections cumulatively 100.4m at 1.9% TREO including 17m at 2.4% TREO from CDX0027; and
326.4m at 4% P2O5 and 0.4% TREO with multiple high-grade rare earths intersections cumulatively
60.5m at 1.8% TREO including of 6.2m at 4.2% TREO from CDX0022.
These two drill holes have been drilled on the same drill section down-dip from the JORC 2012
Indicated and Inferred Mineral Resource Estimate (at a 0.5% TREO cut-off) of 18.8 million tonnes at
1.15% TREO and 10% P2O5, highlighting the strong potential to expand and upgrade the current MRE.
For more information, please contact:
Investors: Jeremy Robinson, Managing Director
Media: Nicholas Read, Read Corporate
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
Ph: +61 8 6383 6593
Ph: +61 8 9388 1474
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
CDX0027 and CDX0022 are located 100m to the south-east of CDX0020, which intersected 384.4m at
4% P2O5 and 0.3% TREO (ASX: 20 September 2022).
RareX Managing Director, Jeremy Robinson, said: “Our 2022 drilling program is continuing to provide
overwhelming evidence that Cummins Range is a world-class mineral system, hosting both rare earth
oxides and top-quality rock phosphate. The potential to extract both valuable minerals was confirmed
by the encouraging metallurgical testwork results we announced yesterday, which confirmed the
potential to produce a high-quality phosphate concentrate.
“The latest drilling is now adding significant volume and scale to the deposit, with these latest
intersections occurring well beyond the current Mineral Resource envelope. They will be incorporated
in our next MRE update, which will in turn underpin a Pre-Feasibility Study to determine the optimum
scale of this exciting and globally significant project.”
Figure 1. Drill hole locations of 2022 drill program. Showing TREO % mineralisation and location of drill Section ‘C’ – “C”.
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
CDX0027
Assay results have been received for the diamond portion of CDX0027. The assays for the upper 198m
of RC are still outstanding. The drill hole passed through the Pendant Dyke, Rare Dyke and was
stopped short of the Phos Dyke.
Figure 2. Section showing drill results for CDX0027 and CDX0022. Location of section shown on Figure 1.
A total of 24 rare earths mineralised zones (Table 1) were intersected with a cumulative width and
grade of 100.4m at 1.9% TREO. Zones ranged in width from 0.5m to 17m and in grade from 0.6% to
5.8% TREO. The uranium and thorium oxide content is ultra-low with an average of 39ppm for the 24
mineralised zones.
A majority of the mineralised zones are located in the hanging wall position proximal to, or on contact
zones with the Rare Dyke, including 17m at 2.4% TREO from 492.2m. Mineralisation within the Rare
Dyke is also strong with intercepts of 3.6m at 4.5% TREO and 12m at 2.4% TREO.
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
The phosphate alteration around the Rare Dyke is extensive with a significant intercept of 455.6m @
5% P2O5 and 0.5% TREO from 197.8m (Table 2). This phosphate intercept is likely to expand up-hole
once RC assays are received for the top 197.8m.
The hole was stopped in strong phosphate mineralisation with the last 87.9m assaying at 9% P2O5
and 0.4% TREO. The combined uranium and thorium oxide for the 455.6m intersection was very low
at 69 ppm.
The phosphate occurs as disseminated apatite in the carbonatite and altered pyroxenite. Higher
grade phosphate of >7%, for example hole CDX0015 in Figure 2, occurs in phoscorite, which is an
ultramafic rock composed of coarse apatite-magnetite-phlogopite and diopside. The footwall
position of CDX0027 is mostly phoscorite with the same geochemical composition as the Phos Dyke
phoscorite.
CDX0022
All assays have been received for CDX0022, which was drilled through the Pendant Dyke and Rare
Dyke and stopped in the footwall at 439.4m.
20 rare earths mineralised zones were intersected with a cumulative width of 60.5m at 1.8% TREO.
The zones are hosted in the hanging wall position and within the Rare Dyke.
The most mineralised zone in the hanging wall position is 27.7m at 1% TREO including 5.2m at 3.1%
TREO and within the Rare Dyke is 6.15m at 4.2% TREO. Negligible uranium and thorium oxide was
seen with an average combined total of 37ppm over the 20 mineralised zones.
Consistent phosphate mineralisation was seen in most of CDX0022, with a large intersection starting
at the Pendant dyke and finishing at the end-of-hole with 326.4m at 4% P2O5 and 0.4% TREO. The
disseminated coarse apatite is low in uranium and thorium with a combined average of 52ppm.
A scissor hole, CDX0033, was drilled to confirm the geological model and strike and dip of structures,
rock fabrics and mineralised zones.
CDX0033 is shown in Figure 2 and is drilled down the hanging wall position. A low-angle rock fabric
dipping to the south-west is seen in most of the drill hole which supports the geological model. Assays
are expected in coming weeks.
This announcement has been authorised for release by the Board of RareX Limited.
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
Competent Person’s Statements
The information in this announcement that relates to the geological model is based on and fairly represents
information compiled by Mr Guy Moulang, an experienced geologist who is an employee of RareX Limited. Mr
Moulang 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 to which he is undertaking
to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of
Exploration Results, Mineral Resources and Ore Reserves”. Mr Moulang consents to the inclusion in this
announcement of the matters based on this information in the form and context in which it appears.
Prior exploration results were reported in accordance with Listing Rule 5.7 and the Company confirms
there have been no material changes since the information was first reported.
The mineral resource estimate in this announcement was reported by the Company in accordance
with Listing Rule 5.8 on 19 July 2021. The Company confirms it is not aware of any new information
or data that materially affects the information included in the previous announcement and that all
material assumptions and technical parameters underpinning the estimates in the previous
announcement continue to apply and have not materially changed.
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
Appendix 1: Significant Intercepts and Drill Collars
Table 1. TREO Significant Intercepts for Drill Holes CDX0022 and CDX0027 at 0.5% cut-off
TREO = Lanthanide Oxides + Yttrium Oxide + Scandium Oxide
Mineralised
Zone
Hole ID
From
(m)
To
(m)
Interval
(m)
TREO
%
NdPr
%
NdPr %
of
TREO
Nb2O5
%
P205
%
Rare Dyke
Hanging wall
CDX0022
153.9
154.55
0.65
0.75
0.14
19
0.06
4
Rare Dyke
Hanging wall
CDX0022
163.65
191.3
27.65
0.95
0.16
17
0.05
5
Rare Dyke
Hanging wall
CDX0022
186.1
191.3
5.2
3.06
0.47
15
0.02
6
Rare Dyke
Hanging wall
CDX0022
245
246.1
1.1
0.94
0.17
18
0.02
3
Rare Dyke
Hanging wall
CDX0022
255
255.6
0.6
0.5
0.11
23
0.1
6
Rare Dyke
Hanging wall
CDX0022
259.1
259.7
0.6
0.67
0.13
19
0.05
3
Rare Dyke
Hanging wall
CDX0022
269.7
270
0.3
2.73
0.45
16
0.03
4
Rare Dyke
Hanging wall
CDX0022
299.2
300
0.8
1.26
0.21
17
0.14
2
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Rare Dyke
CDX0022
CDX0022
CDX0022
CDX0022
CDX0022
CDX0022
CDX0022
CDX0022
CDX0022
CDX0022
CDX0022
303
311.5
313.8
322.4
322.4
333
353.1
354.95
368.6
369.75
373.15
303.3
314.9
314.9
333.3
325.15
333.3
354
355.25
374.75
370.8
374.15
0.3
3.4
1.1
10.9
2.75
0.3
0.9
0.3
6.15
1.05
1
1.52
0.71
1.29
0.89
1.66
6.24
0.9
1.15
4.16
12.63
8.1
0.27
0.12
0.19
0.14
0.26
0.9
0.16
0.18
0.65
2.01
1.18
18
18
15
16
16
14
18
16
16
16
15
0.03
0.15
0.11
0.08
0.06
0.07
0.09
0.07
0.02
0
0.01
5
4
1
2
3
1
5
4
4
0
8
Rare Dyke
Footwall
CDX0022
459.4
459.85
0.45
0.75
0.12
16
0.16
1
Pendant Dyke
Hanging wall
CDX0027
208.95
209.95
1
1.26
0.24
19
0.04
3
Pendant Dyke
Hanging wall
CDX0027
232.5
233.5
1
0.59
0.11
18
0.12
4
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
Hole ID
From
(m)
To
(m)
Interval
(m)
TREO
%
NdPr
%
NdPr %
of
TREO
Nb2O5
%
P205
%
Pendant Dyke
CDX0027
241.35
242.35
1
1.73
0.3
18
0.07
1
Rare Dyke
Hanging wall
CDX0027
263.2
264.5
1.3
0.57
0.1
18
0.02
1
Rare Dyke
Hanging wall
CDX0027
301.33
304.8
3.47
1.37
0.21
16
0
2
Rare Dyke
Hanging wall
CDX0027
301.33
301.7
0.37
5.65
0.87
15
0.01
6
Rare Dyke
Hanging wall
CDX0027
308.8
313.15
4.35
0.97
0.16
17
0.02
3
Rare Dyke
Hanging wall
CDX0027
308.8
309.25
0.45
5.78
0.87
15
0
1
Rare Dyke
Hanging wall
CDX0027
325.9
338.65
12.75
0.87
0.15
17
0.05
4
Rare Dyke
Hanging wall
CDX0027
325.9
326.95
1.05
4.22
0.68
16
0.05
3
Rare Dyke
Hanging wall
CDX0027
331.2
331.8
0.6
3.99
0.62
16
0.05
3
Rare Dyke
Hanging wall
CDX0027
350.6
352.52
1.92
1.18
0.2
17
0.08
4
Rare Dyke
Hanging wall
CDX0027
372.5
374.95
2.45
1.4
0.25
18
0.1
4
Rare Dyke
Hanging wall
CDX0027
378.97
380.2
1.23
0.52
0.09
18
0.12
5
Rare Dyke
Hanging wall
CDX0027
389.95
401.7
11.75
1.25
0.21
17
0.06
4
Rare Dyke
Hanging wall
CDX0027
399.4
401.7
2.3
3.32
0.52
16
0.03
1
Rare Dyke
Hanging wall
CDX0027
417.6
419.4
1.8
0.88
0.14
15
0.1
1
Rare Dyke
Hanging wall
CDX0027
430.1
443.95
13.85
0.99
0.17
17
0.08
4
Rare Dyke
Hanging wall
CDX0027
431
431.85
0.85
3.49
0.57
16
0.12
4
Rare Dyke
Hanging wall
CDX0027
438.5
439.59
1.09
3.92
0.61
16
0.04
3
Rare Dyke
Rare Dyke
Rare Dyke
CDX0027
CDX0027
CDX0027
492.16
493.55
505
509.2
496.8
508.55
17.04
3.25
3.55
2.36
5.39
4.47
0.37
0.81
0.7
16
15
16
0.02
0.01
0
2
2
3
Mineralised
Zone
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Unit 6, 94 Rokeby Road
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@rarex_asx
Mineralised
Zone
Rare Dyke
Hole ID
From
(m)
To
(m)
Interval
(m)
TREO
%
NdPr
%
NdPr %
of
TREO
Nb2O5
%
P205
%
CDX0027
520
532
12
2.38
0.36
15
0.04
3
Table 2. Phosphate Significant Intercepts for Drill Holes CDX0022 and CDX0027 at 3% cut-off.
TREO = Lanthanide Oxides + Yttrium Oxide + Scandium Oxide
Mineralised
Zone
Pendant Dyke
Rare Dyke
Rare Dyke
Rare Dyke
Footwall
Hole ID
From
(m)
To
(m)
Interval
(m)
TREO
%
NdPr
%
NdPr %
of
TREO
Nb2O5
%
P2O5
%
CDX0022
CDX0022
CDX0022
CDX0027
7
112
144
197.8
81
132
470.4
653.4
74
20
326.4
455.6
0.14
0.22
0.39
0.48
0.03
0.05
0.08
0.09
23
22
20
20
0.04
0.22
0.06
0.06
4
3
4
5
CDX0027
565.55
653.4
87.85
0.35
0.09
27
0.05
9
Azimuth
Dip
Type
Status
50
60
Diamond
Assays Received
Table 3. Drill Collars
Hole ID
East MGA
North MGA
RLUTM
CDX0020
306871
7866529
392
End Depth
(m)
666
CDX0021
306890
7866641
392
345.2
50
60
Diamond
Awaiting Assays
CDX0022
307007
7866511
391
470.6
50
60
Diamond
Assays Received
CDX0023
307009
7866383
392
569.9
50
60
Diamond
Awaiting Assays
CDX0024
307123
7866367
391
545.8
50
60
Diamond
Awaiting Assays
CDX0025
307113
7866260
391
198
50
60
RC
Awaiting Assays
CDX0026
307222
7866252
391
578.8
50
60
Diamond
Awaiting Assays
CDX0027
306891
7866411
392
653.8
50
60
Diamond
Assays Received
CDX0028
307005
7866263
392
695.8
50
60
Diamond
Awaiting Assays
CDX0029
307115
7866262
391
578.8
50
60
Diamond
Awaiting Assays
CDX0030
307220
7866139
391
515.9
50
60
Diamond
Awaiting Assays
CDX0031
307324
7866122
391
150
50
60
RC
Awaiting Assays
CDX0032
307101
7866148
391
198
50
60
RC
Awaiting Assays
CDX0033
307154
7866673
391
701
217
60
Diamond
Awaiting Assays
CDX0034
307296
7866700
392
293.8
50
60
Diamond
Being processed
CDX0035
307267
7866608
390
476.7
50
60
Diamond
Being processed
CDX0036
307046
7866596
392
84
50
60
RC
Being processed
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@rarex_asx
Hole ID
East MGA
North MGA
RLUTM
Azimuth
Dip
Type
Status
392
End Depth
(m)
428.9
CDX0037
307040
7866590
50
60
Diamond
Being processed
CDX0038
307076
CDX0039
306946
7866551
392
464.9
50
60
Diamond
Being processed
7866457
392
324
50
60
RC
Being processed
CDX0040
307071
7866436
392
476.9
50
60
Diamond
Being processed
CDX0041
307202
7866431
391
446.9
50
60
Diamond
Being processed
CRX0071
307080
7866743
393
144
50
60
RC
Assays Received
CRX0072
307113
7866776
393
96
50
60
RC
Assays Received
CRX0073
307023
7866747
393
138
50
60
RC
Assays Received
CRX0074
307528
7866794
391
120
50
60
RC
Assays Received
CRX0075
307561
7866824
391
114
50
60
RC
Assays Received
CRX0076
307602
7866854
391
114
50
60
RC
Awaiting Assays
CRX0077
307638
7866884
391
102
50
60
RC
Awaiting Assays
CRX0078
307672
7866914
391
102
50
60
RC
Awaiting Assays
CRX0079
307708
7866938
391
102
50
60
RC
Awaiting Assays
CRX0080
307349
7866802
392
126
50
60
RC
Awaiting Assays
CRX0081
307479
7866747
391
156
50
60
RC
Assays Received
CRX0082
307564
7866558
392
96
50
60
RC
Awaiting Assays
CRX0083
307666
7866694
391
96
50
60
RC
Awaiting Assays
CRX0084
307601
7866701
391
157
50
60
RC
Awaiting Assays
CRX0085
307578
7866733
391
120
50
60
RC
Awaiting Assays
CRX0086
307624
7866671
391
126
50
60
RC
Awaiting Assays
CRX0087
307621
7866710
391
132
50
60
RC
Awaiting Assays
CRX0088
307549
7866763
391
126
50
60
RC
Being processed
CRX0089
307593
7866649
391
114
50
60
RC
Being processed
CRX0090
307568
7866676
391
114
50
60
RC
Being processed
CRX0091
307586
7866791
391
96
50
60
RC
Being processed
CRX0092
307613
7866762
391
96
50
60
RC
Being processed
CRX0093
307565
7866624
391
150
50
60
RC
Being processed
CRX0094
307502
7866829
391
120
50
60
RC
Being processed
CRX0095
307479
7866857
391
120
50
60
RC
Being processed
CRX0096
307445
7866625
391
132
50
60
RC
Being processed
CRX0097
307415
7866591
391
150
50
60
RC
Being processed
CRX0098
307421
7866647
391
132
50
60
RC
Being processed
CRX0099
307389
7866622
391
174
50
60
RC
Being processed
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
Appendix 2: JORC Code, 2012 Edition – Table 1
Cummins Range Section 1 Sampling Techniques and Data
Criteria
Sampling
techniques
Drilling Techniques
Drill Sample
Recovery
JORC Code Explanation
Commentary
Nature and quality of sampling (eg 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 (eg ‘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 (eg submarine nodules) may
warrant disclosure of detailed information.
•
Drill type (eg core, reverse circulation, open- hole
hammer, rotary air blast, auger, Bangka, sonic, etc)
and details (eg 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).
•
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.
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
The Cummins Range Rare Earth deposit is
being drilled tested with RC drilling and
diamond drilling.
The RC drill rig used a 5 ½ inch diameter
hammer. Each 1m bulk sample was
collected in a plastic bag.
Diamond drill sizes used are PQ, HQ and
NQ2
Each metre was analysed with a portable
XRF, and recovery and geology logs were
completed.
Sample interval selection was based on
geological controls and mineralisation
Each 1m RC sample has a 4% cone split
from the drill rig. Samples submitted to
the laboratory vary in length from 1m to
4m.
Each core sample was cut in half with an
automatic core saw. The half core sample
was sent to the laboratory with intervals
ranging from 0.3m to 1.3m.
Samples are assayed for 35 elements
using peroxide fusion with a ICP-OES and
ICP-MS finish
Prefix CRX drill holes are reverse
circulation (RC) drilling
Prefix CDX are diamond drilling.
Recoveries for all drill holes were
recorded for each metre.
Recoveries for the RC drilling in this
announcement are >98%
Recoveries for the Diamond drilling in this
announcement are 100%
RareX limited
www.rarex.com.au
@rarex_asx
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.
All metres drilled had a geology log
completed. Geology logs were aided using
geochemical analysis from a portable XRF.
The detail of logging is appropriated for
Mineral Resource estimation.
The total length and percentage of the relevant
intersections logged.
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 subsampling 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.
A 4% split from the cone splitter on the
drill rig is used for the laboratory assay.
Samples are often composited and
samples can range from 1-4m.
This RC sampling technique meets the
industry standards and is appropriate for
this style of mineralisation and for
resource estimation.
Diamond core was cut in half with an
automatic core saw and half the core was
sent to the laboratory. This is an
appropriate method for this style of
mineralization and for resource
estimation.
Whether sample sizes are appropriate to the grain
size of the material being sampled.
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.
The reported assays were analysed by
Nagrom. The following techniques
were used:
•
•
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.
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
35 elements were assayed for using
peroxide fusion with a ICP-OES and ICPMS finish
In addition to internal checks by Nagrom,
RareX incorporates a QA/QC sample
protocol utilizing prepared standards,
blanks and duplicates for 8% of all assayed
samples.
RareX limited
www.rarex.com.au
@rarex_asx
Verification of
sampling and
assaying
The verification of significant intersections by either
independent or alternative company personnel.
•
The use of twinned holes.
The verification of significant intersections by either
independent or alternative company personnel.
•
•
Discuss any adjustment to assay data.
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.
Data spacing and
distribution
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.
•
Significant intercepts were calculated by
RareX geological staff.
The intercepts have not been verified by
independent persons
There are numerous drill holes with in the
Cummins Range resource of comparable
tenure
All assay results are reported to RareX in
parts per million (ppm). RareX geological
staff then convert the parts per million to
ppm oxides using the below element to
stoichiometric oxide conversion factors.
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 were located by handheld
GPS and DGPS
All coordinates are in MGA Zone 52H 2020
Topographic control is maintained by the
use of previously surveyed drill holes. The
Cummins Range deposit is located on flat
terrain.
Down hole surveys were taken every 10m
using an Axis Gyro tool
Drill hole spacing is considered
appropriate to gain a robust
understanding of the mineralisation. The
exploration team are seeing the same
geological positions mineralised along
strike, suggesting RareX have a solid
geological model. Drill spacing is
considered appropriate to gain an inferred
mineral resource from.
2m to 4m RC composites were completed
in areas where higher grades were not
expected
The angled drill holes were directed as
best as possible across the known
geology.
If the relationship between the drilling orientation
and the orientation of key mineralised structures is
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
considered to have introduced a sampling bias, this
should be assessed and reported if material.
Sample security
The measures taken to ensure sample security
•
Drill samples are delivered to Halls Creek
by RareX staff. Then the samples are
transported from Halls Creek to Perth via
a reputable transport company.
Cummins Range Section 2 Reporting of Exploration Results
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 Cummins Range REO deposit is
located on tenement E80/5092 and is
100% owned by Cummins Range Pty Ltd
which is a wholly owned subsidiary of
RareX Ltd. Cummins Range Pty Ltd has
purchased the tenement from Element 25
with a potential capped royalty payment
of $1m should a positive PFS be
completed within 36 months of purchase
finalisation.
CRA Exploration defined REO
mineralisation at Cummins Range in 1978
using predominantly aircore drilling.
Navigator Resources progressed this
discovery with additional drilling after
purchasing the tenement in 2006.
Navigator announced a resource estimate
in 2008. Kimberley Rare Earths drilled
additional holes and upgraded the
resource estimate in 2012.
The Cummins Range REO deposit occurs
within the Cummins Range carbonatite
complex which is a 2.0 km diameter nearvertical diatreme pipe that has been
deeply weathered but essentially
outcropping with only thin aeolian sand
cover in places. The diatreme pipe
consists of various mafic to ultramafic
rocks with later carbonatite intrusions.
The primary ultramafic and carbonatite
rocks host low to high grade rare earth
elements with back ground levels of
1000-2000ppm TREO and high grade
zones up to 17% TREO. The current
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.
Exploration done
by other parties
Acknowledgment and appraisal of exploration by
other parties.
•
Geology
Deposit type, geological setting and style of
mineralisation.
•
RareX - ASX:REE
ABN: 65 105 578 756
Unit 6, 94 Rokeby Road
Subiaco, WA 6008, Australia
info@rarex.com.au
+61 (0) 8 6383 6593
RareX limited
www.rarex.com.au
@rarex_asx
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:
•
resource sits primarily within the
oxidised/weathered zone which extends
to 120m below the surface. Metallurgical
studies by previous explorers and by
RareX show the rare earth elements are
hosted by monazite and bastnasite which
are a common and favourable hosts for
rare earth elements.
All drill hole locations are shown on the
drill plan and collar details are tabled
within the announcement
easting and northing of the drill hole collar
elevation or RL (Reduced Level – elevation
above sea level in metres) 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.
Data aggregation
methods
In reporting Exploration Results, weighting
averaging techniques, maximum and/or minimum
grade truncations (eg cutting of high grades) and
cut-off grades are usually Material and should be
stated.
Where aggregate intercepts incorporate short
lengths of hi
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