Further Encouraging Mineralised Intervals at Trundle Project
Released
Released
Announcement PDF
ASX / MEDIA ANNOUNCEMENT
22 December 2020
FURTHER ENCOURAGING MINERALISED INTERVALS AT
TRUNDLE COPPER-GOLD PROJECT, NSW
Second drill rig to be mobilized in early 2021 to assist in expanding mineralized footprints
•
Highlights:
• RareX’s 65% joint venture partner at the Trundle Copper-Gold Project in NSW, Kincora
Copper (TSX-V: KCC) has provided a significant update on the ongoing diamond drilling
program at Trundle.
• The latest diamond drill hole completed at the Trundle Park prospect, TRDD012, has
provided further significant encouragement following on from previously reported visual
observations for hole TRDD0011:
- TRDD012 has intersected the best observed primary bornite and chalcopyrite zones
seen to date at the Trundle Project; and
- The hole has intersected four well-developed and broad skarn horizons.
• High-priority intervals from TRDD011 and TRDD012 have been submitted for assay results.
• A second drill rig is expected to be operational early in the New Year at the Trundle Park
prospect to assist in expanding the alteration and mineralization footprints.
• Ongoing drilling and re-logging of core at the Trundle Park prospect is providing an
improved geological understanding and vectors for the at/near-surface skarn potential, as
well as the potential for a large related porphyry intrusion system.
RareX Limited (ASX: REE) (RareX or the Company) is pleased to provide an update on ongoing drilling
activities at the Trundle Gold-Copper Project Joint Venture Project, located in the Macquarie Arc of the
Lachlan Fold Belt in NSW, Australia. The Trundle Project is a 65% / 35% joint venture between RareX and
Kincora Copper Ltd (Kincora) (TSXV: KCC).
Kincora has advised that the latest diamond hole at the Trundle Park prospect, TRDD012, has intersected
the best observed primary bornite and chalcopyrite zones seen at the Project to date.
John Holliday, Technical Committee chair, and Peter Leaman, Senior VP of Exploration, commented: “The
latest drill hole at the Trundle Park prospect, TRDD012, was targeted to make a deeper intersection of the
structurally controlled covellite-pyrite-chalcocite massive sulphide mineralization intersected at shallow
depth in hole TRDD011.
“TRDD012 looks particularly positive as our site geologists report it has intersected the best observed
primary bornite and chalcopyrite zones to date at the Trundle Project. The zones are coincident with
magnetite, with some intervals also hosting covellite and chalcocite. TRDD012 and TRDD011 provide
encouragement for increased grade potential, vectors towards the more favourable part of the
mineralised system and of an improved geological model for the Trundle Park prospect.”
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
Figure 1: Trundle is the only brownfield porphyry project held by a listed junior in the Macquarie Arc, Australia’s
foremost and gold rich copper porphyry belt. Trundle is the western section of the Northparkes intrusive complex,
that hosts the second largest porphyry mine in Australia, with initial Kincora drilling taking place at targets 8.5km
apart.
Figure 2: Kincora’s twelfth hole has intersected the best visual primary bornite and chalcopyrite zones, and thickest
skarn horizons, to date at the Trundle project.
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
Trundle Park prospect
As outlined in the 2 December, 2020 ASX release, drill hole TRDD011 (see Figure 3), intersected intense
structurally controlled mineralization hosted within near surface skarn alteration.
TRDD011 extended the mineralized skarn horizon to the north-west of TRDD001 and was followed up by
a 50m step back to the south-east with TRDD012, which is an 80m step-out to the south of TRDD001.
TRDD012 was designed to intersect the down-dip extension of previously intersected higher grade, near
surface intervals, and to better understand the width potential of the skarn horizons.
TRDD012 was drilled to 581 metres, and was extended beyond the original target depth of 400 metres
due to the extension of skarn alteration and mineralization intersected.
Figure 3: Improved geological understanding generating results. Encouraging visual intervals awaiting assay results.
Notes:
1.
There is insufficient drilling data to date to demonstrate continuity of mineralized domains and determine the
relationship between mineralization widths and intercept lengths, true widths are not known. Refer to Tables
1 and 2 and the QA/QC Procedures note for further details, including cut off and dilution levels of reported
significant intervals.
2.
Photos of selected intervals which are not representative of the mineralization hosted on the whole property
but are of the lithology’s intersected in the mineralized zones in this drill hole within respective skarn horizons.
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
The average depth of prior explorer drilling at the Trundle Park prospect is 28 metres, with only two
diamond core drill holes completed to moderate depths.
Benefitting from this field season’s deeper diamond core drilling program, re-logging of Kincora’s core
has resulted in a change in the current drill hole orientation towards the north-west. Kincora’s ongoing
exploration activities have resulted in a significantly improved understanding of the bedding direction
hosting the skarn horizons, along with key structures/faulting and the identified multiple phases of
mineralization within the skarn – all supporting a substantial mineralizing event and providing further
vectors to the targeted causative intrusion system.
Recent drill results have provided the confidence to mobilize a second drill rig, which is planned to be
active early in the 2021.
Table 1: Trundle Project – Collar Information
Target
Hole #
Trundle Park1
Mordialloc2
Bayley’s3
Trundle Park3
Mordialloc3
Mordialloc4
Trundle Park*
Trundle Park4
Trundle Park*
Trundle Park*
Trundle Park*
Trundle Park*
Trundle Park*
TRDD001
TRDD002
TRDD003
TRDD004
TRDD005
TRDD006
TRDD007
TRDD008
TRDD009
TRDD010
TRDD011
TRDD012
TRDD013
Length
(m)
685
790
721
694
958
727
521
490
445
643
332
581
Dip
(o)
60
60
60
55
60
70
60
60
60
60
55
55
60
Azimuth
RL
251
101
329
264
110
275
264
264
310
330
330
330
330
270
271
274
271
266
270
272
274
270
274
273
273
274
Easting
(MGA)
570049
568443
569230
569780
568439
568598
570015
569924
569613
569964
570036
570061
570010
Northing
(MGA)
6352082
6360363
6360641
6352079
6360204
6360208
6352231
6351963
6352380
6351922
6352043
6352000
6351830
Core
Recovery
95.9%
98.2%
99.5%
99.6%
97.3%
84.4%
97.1%
99.2%
96.4%
94.8%
Results previously released to the ASX on the following dates:
1. 6 July 2020
2. 24 July 2020
3. 7 September 2020
4. 2 December 2020
* Assays pending
Drilling, Assaying, Logging and QA/QC Procedures
Sampling and QA/QC procedures are carried out by Kincora, and its contractors, using Kincora’s protocols
as per industry best practice.
All samples have been assayed at ALS Minerals Laboratories, delivered to Orange, NSW, Australia. In
addition to internal checks by ALS, Kincora incorporates a QA/QC sample protocol utilizing prepared
standards and blanks for 5% of all assayed samples.
Diamond drilling was undertaken by DrillIt Consulting Pty Ltd, from Parkes, under the supervision of
Kincora’s field geologists. All drill core was logged to best industry standard by well-trained geologists
and Kincora’s drill core sampling protocol consisted a collection of samples over all of the logged core.
Sample interval selection was based on geological controls or mineralization or metre intervals, and/or
guidance from the Kincora Technical Committee provided subsequent to daily drill and logging reports.
Sample intervals are cut by Kincora and delivered directly to ALS.
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
All reported assay results are performed by ALS and widths reported are drill core lengths. There is
insufficient drilling data to date to demonstrate continuity of mineralized domains and determine the
relationship between mineralization widths and intercept lengths.
True widths are not known at this stage.
The following assay techniques have been adopted:
-
Gold: Au-AA24 (Fire assay), reported.
-
Multiple elements: ME-ICP61 (4 acid digestion with ICP-AES analysis for 33 elements) and MEMS61 (4 acid digestion with ICP-AES & ICP-MS analysis for 48 elements), the latter report for
TRDD001 and former reported for holes TRDD002-TRDD010.
-
Copper oxides and selected intervals with native copper: ME-ICP44 (Aqua regia digestion with
ICP-AES analysis) has been assayed, but not reported.
-
Assay results >10g/t gold and/or 1% copper are re-assayed.
This announcement has been authorized for release by the Board of RareX Limited.
For further information, please contact:
RareX Limited
Jeremy Robinson
Executive Director
Ph: 08 6143 6720
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
Media Enquiries
Nicholas Read
Read Corporate
Ph: 08 9388 1474
Competent Person’s Statement
Information in this release that relates to current Exploration Results is based on and fairly represents
information and supporting documentation reviewed by Mr Guy Moulang, an experienced geologist
consulting for RareX Limited. Mr Moulang is a Member of the Australian Institute of Geoscientist and has
sufficient experience which is relevant to the styles of mineralisation and types of deposits under
consideration and to the activities being undertaken 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 release of the matters based on his information
in the form and context in which it appears.
The Trundle Project
The Trundle project is located 30km west of the China Molybdenum Company Limited (“CMOC”)
operated Northparkes copper-gold project, in the same Northparkes Igneous Complex.
Past explorer drilling has been extensive with the completion of 2208 holes for 61,146 metres
but deeper drilling utilising modern exploration knowledge has been very limited.
Over 92% of prior drilling has been to less than 50 metres depth, a depth that the existing major
mines in this belt suggest is just too shallow, with just 11 holes beyond 300 metres (0.5% of holes
drilled).
Existing significant drill intersections supports vectoring to very compelling targets for ongoing
phase 1 drilling program at three existing mineralised systems – Trundle Park, Mordialloc and
Bayleys. These systems have not been drilled since industry leading Induced Polarisation
survey's, including HPX’s proprietary Typhoon system, and magnetic modelling were completed.
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
Appendix 1: JORC Code, 2012 Edition – Table 1
Trundle Section 1 Sampling Techniques and Data
Criteria
Sampling
techniques
Drilling Techniques
Drill Sample
Recovery
Logging
JORC Code Explanation
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.
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.
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
•
The Trundle Park prospect at the Trundle Project was drill tested by our
Joint Venture partner Kincora Copper Limited with diamond drilling
completed by Drill Consulting Pty Ltd
Diamond drilling was used to obtain orientated samples from the ground,
which was then structurally, geotechnically and geologically logged
No new assay results have been reported in this announcement
•
Diamond Drilling (DD) completed using PQ, HQ3 and NQ2 diameter
•
•
Drill Core recovery was logged
Diamond drill core recoveries are contained in the body of the
announcement
•
Systematic geological, structural and geotechnical logging was completed
by Kincora geologists and consultants
The detail of logging was appropriated for the understanding and sampling
of this style of mineralization
Drill core was photographed
•
•
•
•
Sub-sampling
techniques and
sample preparation
Quality of assay
data and
laboratory tests
Verification of
sampling and
assaying
Location of data
points
Data spacing and
distribution
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 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.
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.
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.
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.
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
•
•
•
•
•
•
•
No new assay results have been reported in this announcement
•
No new assay results have been reported in this announcement
•
No new assay results have been reported in this announcement
Drill hole collars were located by handheld GPS
All coordinates are in MGA Zone 55H 1994
Topographic control is maintained by the use of widely available
government data sets. Ground is gently undulating.
Down hole surveys were taken at approximately 30m intervals, using a
digital Reflex multi shot camera.
Drill holes are preferentially located in prospective areas
Further information on drill hole locations are discussed in the body of
the report
Orientation of data
in relation to
geological
structure
Sample security
Whether sample compositing has been applied.
•
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.
The measures taken to ensure sample security
•
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
•
The mineralised areas are yet to demonstrate sufficient grade or
continuity to support the definition of a Mineral Resource per the JORC
2012 Code
The angled drill holes were directed as best possible across the known
lithological and interpreted mineralized structures
Core is handled by Kincora Copper, and its contractors, including delivery
to the laboratory
Trundle Section 2 Reporting of Exploration Results
Criteria
Mineral
tenement and
land tenure
status
Exploration
done by other
parties
JORC Code Explanation
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.
Acknowledgment and appraisal of exploration by other parties.
•
The Trundle Project is located on EL8222 in which RareX is 35% free
carried in a JV with Kincora Copper until PEA or scoping study is
completed.
•
Exploration has been conducted by multiple previous explorers include
Newcrest Mining, Calibre Mining, HPX and Clancy Exploration
The review and verification process for the information disclosed herein
for the Trundle project has included the receipt of all material exploration
data, results and sampling procedures of previous operators and review
of such information by Kincora’s geological staff using standard
verification procedures
•
Geology
Deposit type, geological setting and style of mineralisation.
As per body of announcement
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 (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.
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 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.
As per body of announcement
Data
aggregation
methods
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
•
No new assay results have been reported in this announcement
Relationship
between
mineralisation
widths and
intercept
lengths
Diagrams
Balanced
reporting
Other
substantive
exploration
data
Further work
The assumptions used for any reporting of metal equivalent values should be clearly
stated.
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 (eg ‘down hole length, true width not known’).
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.
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.
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 method of treatment; metallurgical test results; bulk
density, groundwater, geotechnical and rock characteristics; potential deleterious or
contaminating substances.
The nature and scale of planned further work (eg tests for lateral extensions or large scale
step out drilling.
Diagrams clearly highlighting the areas of possible extensions, including the main
geological interpretations and future drilling areas, provided this information is not
commercially sensitive.
RareX Limited
Suite 23, 513 Hay Street, Subiaco WA 6008 Ph: 08 6143 6720 ACN: 105 578 756
•
Geometry of the mineralised zones, including true width, is unknown due
to lack of drill density
•
Maps and diagrams are included in the body of the announcement
•
Reporting is considered balanced
•
Nothing further
•
•
Exploration is ongoing.
Exploration activities are to be undertaken by Kincora Copper, the
Company's joint venture partner.
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