Talisman Recommences Drilling at Durnings
Released
Released
Announcement PDF
ASX: TLM | 15 October 2024
ASX Announcement
New phase of drilling commences at Durnings
Copper-Gold Prospect, NSW
Drilling underway to test for extensions of previous high-grade copper-gold and base metal results
Highlights:
•
New program of Reverse Circulation (RC) and diamond drilling commences at Durnings.
•
Previous high-grade drill results and step-out geophysical anomalies to be tested.
•
Exploration work approval received from NSW Department of Primary Industries and Regional
Development.
•
RC pre-collars with Diamond drilling program comprises up to ten holes to test zones of high-grade
copper-gold mineralisation previously intersected at Durnings South and Durnings North.
•
Five holes will also test down-hole EM anomalies associated with the high-grade base metal
intersections.
Talisman Mining Limited (ASX: TLM, Talisman) is pleased to advise that it has commenced a new phase of
exploration drilling at its Durnings Prospect, located 25km north of Condobolin in the Cobar basin of centralwestern NSW.
Durnings generated a number of high-grade copper-gold and base metals intersections reported in the March
and June Quarters this year across the Durnings South and Durnings North targets, including:
Durnings South
•
28.3m at 4.03g/t Au, 0.9% Cu, 3.8% Pb, 0.7% Zn, 26.5g/t Ag from 370.5m to 398.8m down-hole, including:
o
10.0m at 7.94g/t Au, 1.0% Cu, 9.9% Pb, 1.5% Zn, 61.3g/t Ag from 374m down-hole.
Durnings North
•
4m at 12.6g/t Au, 0.5% Cu, 0.4% Pb, 0.6% Zn and 11.4g/t Ag from 90m, including:
o
•
1m at 44.4g/t Au, 1.1% Cu, 0.5% Pb, 0.6% Zn and 29.0g/t Ag
13m at 1.35g/t Au, 0.3% Cu, 2.7% Pb, 0.3% Zn and 18.1g/t Ag from 65m, including:
o
7m at 2.79g/t Au, 0.5% Cu, 4.9% Pb, 0.5% Zn and 31.4g/t Ag from 65m
The current phase of drilling will target extensions of these high-grade copper-gold zones as well as down-hole
EM geophysical anomalies which represents potential extensions of the high-grade base metal mineralisation.
The Durnings Prospect lies along strike from Kingston Resources’ Mineral Hill Operation along the eastern side
of the highly prospective Cobar Basin. The location and geological setting of the Durnings Prospect is shown in
Figure 1 and Figure 2.
Talisman Mining | Suite 1, Ground Floor, 33 Colin St, West Perth 6005
ABN
ABN71079
71079536
536495
495
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Figure 1 – Durnings Prospect location plan highlighting prospect locations along the
Eastern Cobar Basin. High-grade base metals and copper-gold deposits in the belt include CSA, Peak, Hera,
Federation and Mineral Hill. Other Talisman tenure in the area (to the east and south-east of Cobar and north of
Condoblin) is also shown.
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Figure 2 – Durnings Prospect over GAIP geophysics. The elevated IP response in the north and south-east of the
image reflects elevated pyrite mineralisation that surrounds the high-grade intersections. Southern Durnings
contains two zones of high-grade base metal and copper-gold mineralisation. Northern Durnings contains one
zone of high-grade copper-gold mineralisation.
Geology and Mineralisation
The Durnings prospect is situated within a complex structural setting associated with NNW trending faults
interpreted to be part of the Mineral Hill Fault Zone, which provides a pathway for mineralised fluids to move
upwards from deeper local granite intrusions.
Durnings is a lightly explored project defined by strongly anomalous soil geochemistry and contains two large,
coherent, conductive GAIP anomalies located along strike from and to the east of strong RC drilling results
returned from earlier exploration by Talisman Mining (see ASX announcement 15 May 2023).
An initial program of RC drilling totalling six holes (DRRC0006-DRRC0011) for 1,710m was completed in late
November 2023 targeted at the southern GAIP anomaly. All six RC holes drilled at approximately 200m spacing
were designed to test a buried GAIP anomaly modelled to between 50m and 200m below surface.
Follow-up RC and diamond drilling commenced at Durnings in March 2024, comprising four diamond cores
drilled to extend RC holes from the November 2023 RC program (DRRCD0006, DRRCD0008, DRRCD0010 and
DRRCD0011) that were suspended in mineralisation, as well as an additional eleven RC holes to test up-dip and
immediately along strike from discovery hole, DRRCD0006.
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Exceptional assay results from diamond drill-hole, DRRCD0019, drilled adjacent to the discovery hole,
confirmed two zones of strong, high-grade mineralisation in the Southern Durnings area – a base metals
mineralisation zone and a deeper copper-gold mineralisation zone.
The Base Metals Zone is associated with a number of conductive “plates” detected and modelled from
downhole electro-magnetic (DHEM) surveys. The deeper copper-gold zone target is associated with a broad
chargeability model located at approximately 300m below surface from re-processed Pole-Dipole Induced
Polarisation (PDIP) survey data over the area.
Results from this program confirmed two broad zones of disseminated galena, silver, sphalerite, chalcopyrite
and gold associated with strong sulphide mineralisation in sericite altered volcaniclastic rocks.
Highlights from the previous drilling programs included:
Southern Durnings
Base Metals Zone1,2
•
42m at 2.3% Pb, 25.3g/t Ag, 1.3% Zn, 0.09% Cu, 0.43g/t Au from 244m to 286m end of hole in
DRRCD0006 including:
o
6m at 10.3% Pb, 126g/t Ag, 3.5% Zn, 0.4% Cu and 1.93g/t Au from 274m to 280m.
•
7.5m at 1.5% Pb, 2.2% Zn, 23.6g/t Ag, 0.3% Cu, 0.31g/t Au from 198m to 205.5m in DRRCD0019 and
•
7.4m at 6.7% Pb, 2.9% Zn, 137g/t Ag, 0.2% Cu, 0.24g/t Au from 218.8m to 226.2m including:
o
1.7m at 26.5% Pb, 7.8% Zn, 558g/t Ag, 0.7% Cu, 0.81g/t Au from 224.5m to 226.2m
containing 1.1m of massive sulphide.
Copper-Gold Zone2
•
28.3m at 4.03g/t Au, 0.9% Cu, 3.8% Pb, 0.7% Zn, and 26.5g/t Ag from 370.5m to 398.8m down-hole,
including:
o
10.0m at 7.94g/t Au, 1.0% Cu, 9.9% Pb, 1.5% Zn and 61.3g/t Ag from 374m to 384m downhole, including:
Northern Durnings
Copper-Gold Zone2
•
4m at 12.6g/t Au, 0.5% Cu, 0.4% Pb, 0.6% Zn and 11.4g/t Ag from 90m, including:
o
•
1m at 44.4g/t Au, 1.1% Cu, 0.5% Pb, 0.6% Zn and 29.0g/t Ag
13m at 1.35g/t Au, 0.3% Cu, 2.7% Pb, 0.3% Zn and 18.1g/t Ag from 65m, including:
o
7m at 2.79g/t Au, 0.5% Cu, 4.9% Pb, 0.5% Zn and 31.4g/t Ag from 65m
Note 1. ASX: TLM -11 January 2024, 27 March & 29 April 2024. Note 2. ASX: TLM - 7 June 2024
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Durnings – Work Plan and Proposed Drill Testing
The proposed drilling program consists of approximately 4,700m of RC and diamond drilling in 12 holes. The
program is intended to be conducted in three phases to test each of the three targets over a 6-10 week period.
The targets at Durnings are illustrated in Figure 3 and include:
•
Southern Durnings base metals;
•
Southern Durnings copper-gold; and
•
Northern Durnings copper-gold.
Figure 3 – Durnings target over GAIP image. Proposed TLM drill-hole locations illustrated by white labels.
Historical drilling conducted by TLM that discovered the high-grade zones of mineralisation shown in blue labels.
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Management Comment
Talisman’s Managing Director, Andrew Munckton, said: “The start of a new phase of exploration drilling at the
Durnings Prospect provides an exciting opportunity to follow up our exploration discovery at this prospect earlier
this year.
“At a time of strengthening copper and gold prices around the world, this project offers walk-up drill targets
containing high grade intersections of both copper and gold and co-existing high-grade base metals in adjacent
positions.
“All these recent high grade drill results are contained in a lightly tested trend of mineralised rocks where
Talisman controls the bulk of the prospective tenure. The extent of mineralisation within the belt clearly
demonstrates the significant opportunity for both high-grade extensions to known mineralisation and further
discoveries.
“The follow-up drilling program has now commenced and will test both the extension positions to previous highgrade copper-gold mineralisation and new positions highlighted by both DHEM and PDIP geophysical models
developed for the area from our previous drilling programs. Importantly, this phase of drilling will provide us with
detailed information regarding the extent of the high-grade mineralisation in the immediate Durnings area.
“We have been looking forward to this follow-up drilling program now that access has been re-established
following a substantial rain delay in late June and will update the market once drilling results have been
received.”
–– Ends ––
For further information, please contact:
Andrew Munckton - Managing Director
+61 4 3563 5598
Nicholas Read (Media inquiries)
+61 4199 29046
This release has been authorised by the Board of Talisman Mining Limited.
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Table 1: Drill-hole information summary – Durnings
Details and coordinates of historical drill holes relevant to this release.
Exploration
Licence
Prospect
Hole ID
EL8660
EL8660
EL8660
EL8660
EL8660
Durnings
Durnings
Durnings
Durnings
Durnings
DRRC0001
DRRC0002
DRRC0003
DRRC0004
DRRC0005
EL8660
Durnings
DRRCD0006
EL8660
Durnings
DRRC0007
EL8660
Durnings
DRRCD0008
EL8660
Durnings
DRRC0009
EL8660
Durnings
DRRCD0010
EL8660
Durnings
DRRCD0011
EL8660
EL8660
EL8660
Durnings
Durnings
Durnings
DRRC0012
DRRC0013
DRRC0014
EL8660
Durnings
DRRCD0015
EL8660
EL8660
EL8660
Durnings
Durnings
Durnings
DRRC0016
DRRC0017
DRRC0018
EL8660
Durnings
DRRCD0019
EL8660
Durnings
DRRCD0020
EL8660
Durnings
DRRCD0021
EL8660
EL8660
EL8660
Durnings
Durnings
Durnings
DRRC0022
DRDD0023
DRDD0024
Hole
Type
RC
RC
RC
RC
RC
RC &
DD
RC
RC &
DD
RC
RC &
DD
RC &
DD
RC
RC
RC
RC &
DD
RC
RC
RC
RC &
DD
RC &
DD
RC &
DD
RC
DD
DD
Easting
Northing
RL
Dip
505741
505894
505844
505793
505741
6386634
6386759
6386773
6386837
6386879
289
291
291
293
295
-75
-60
-59
-60
-58
Azimuth
(MGA
94)
12
130
132
131
132
505927
6386293
287
-60
50
403.5
505819
6386566
285
-61
47
238
505691
6386868
294
-61
47
298.7
505639
6387024
290
-60
51
322
505829
6386739
289
-60
49
315.7
505988
6386156
285
-60
50
384.4
505988
505990
506049
6386344
6386340
6386395
283
283
281
-60
-60
-60
47
56
53
118
214
280
506049
6386395
281
-60
228
423.7
506079
505998
505936
6386420
6386457
6386406
280
281
282
-60
-60
-60
52
50
55
244
214
214
506079
6386420
280
-75
236
452.9
506101
6386334
281
-75
232
384.3
505988
6386457
281
-75
235
375.9
506040
505749
505754
6386282
6386641
6386929
283
289
296
-75
-74
-55
236
15
51
304
251.4
249
EOH Depth
186
210
216
216
210
About Talisman Mining
Talisman Mining Limited (ASX: TLM) is an Australian mineral development and exploration company. The
Company’s aim is to maximise shareholder value through exploration, discovery and development of
complementary opportunities in base and precious metals.
Talisman has secured tenements in the Cobar/Mineral Hill region in Central NSW through the grant of its own
Exploration Licenses and through a joint venture agreement. The Cobar/Mineral Hill region is a richly mineralised
district that hosts several base and precious metal mines including the CSA, Tritton, and Hera/Nymagee mines.
This region contains highly prospective geology that has produced many long-life, high-grade mineral
discoveries. Talisman has identified several areas within its Lachlan Cu-Au Project tenements that show
evidence of base and precious metals endowment which have had very little modern systematic exploration
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completed to date. Talisman believes there is significant potential for the discovery of substantial base metals
and gold mineralisation within this land package and is undertaking active exploration to test a number of these
targets.
Talisman also has secured access to over 1040 km2 of highly prospective tenure in South Australia’s Gawler
Craton known as the Mabel Creek Project. Mabel Creek is prospective for large scale Iron Oxide Copper Gold
(IOCG) deposits and intrusion related rare earths and battery metals mineralisation. Mable Creek is surrounded
by similar tenure owned and being actively explored by Australia’s biggest resource companies including BHP,
Rio Tinto and FMG.
Competent Person’s Statement
Information in this announcement that relates to Exploration Results and Exploration Targets is based on, and
fairly represents information and supporting documentation compiled by Dr Tim Sharp, who is a member of the
Australasian Institute of Geoscientists. Dr Sharp is a full-time employee of Talisman Mining Ltd and has
sufficient experience which is relevant to the style 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
“Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Dr Sharp has
reviewed the contents of this announcement and consents to the inclusion in this announcement of all
technical statements based on his information in the form and context in which they appear.
Forward-Looking Statements
This ASX release may include forward-looking statements. These forward-looking statements are not historical
facts but rather are based on Talisman Mining Ltd.’s current expectations, estimates and assumptions about the
industry in which Talisman Mining Ltd operates, and beliefs and assumptions regarding Talisman Mining Ltd.’s
future performance. Words such as “anticipates”, “expects”, “intends”, “plans”, “believes”, “seeks”,
“estimates”, “potential” and similar expressions are intended to identify forward-looking statements. Forwardlooking statements are only predictions and are not guaranteed, and they are subject to known and unknown
risks, uncertainties, and assumptions, some of which are outside the control of Talisman Mining Ltd. Past
performance is not necessarily a guide to future performance and no representation or warranty is made as to
the likelihood of achievement or reasonableness of any forward-looking statements or other forecast. Actual
values, results or events may be materially different to those expressed or implied in this presentation. Given
these uncertainties, recipients are cautioned not to place reliance on forward looking statements. Any forwardlooking statements in this announcement speak only at the date of issue of this announcement. Subject to any
continuing obligations under applicable law and the ASX Listing Rules, Talisman Mining Ltd does not undertake
any obligation to update or revise any information or any of the forward-looking statements in this
announcement or any changes in events, conditions, or circumstances on which any such forward looking
statement is based.
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Appendix 2
JORC Tables Section 1 & 2
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections)
Criteria
Sampling
techniques
JORC Code explanation
•
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 3kg 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.
Drilling
techniques
•
Drill type (e.g. core, reverse circulation, openhole 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).
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
Commentary
•
•
•
•
•
RC Drilling samples are collected at either one metre or
two metre intervals via a drill rig mounted cyclone and
static cone splitter set to a 12% split to produce a nominal
4-7kg sample which was collected in a pre-numbered
sample bag.
RC samples undergo routine 1 metre composite pXRF
analysis using an Olympus Vanta M-series to aid in logging
and identifying zones of interest.
Diamond core samples, either PQ, HQ3 or NQ2 in size
diameter, were either cut in half longitudinally or a quarter
longitudinally, using an automated Almonte core saw Core
was placed in boats, holding core in place. Core sample
intervals varied from 0.2 to 1.3m in length but were
predominantly aligned to 1m intervals or with sample
boundaries which respected geological contacts.
Sampling is controlled by Talisman protocols and QAQC
procedures as per industry standard and a chain of custody
maintained through transfer to ALS Laboratories in
Adelaide, SA.
RC /DD samples were dried, crushed (where required),
split and pulverised (total prep) to produce a master pulp.
From this master pulp, a 0.25g sub sample was taken for
multi-element analysis by four acid digest with an ICP-MS
finish. A 50g sub sample was also taken for fire assay for
gold with ICP-AES finish.
•
RC drilling cited in this report was undertaken by Strike
Drilling Pty Ltd using a LC36 (KWL 700) truck-mounted
Reverse Circulation drill rig. A truck-mounted booster and
compressor provided high pressure air with an auxiliary
compressor used where ground conditions warranted.
• RC drilling was completed with a face sampling hammer of
nominal 140mm size.
• Diamond Drilling cited in this report was undertaken by
DDH1 Drilling Pty LTD ùsing an Evolution FH3000 or
UDR1200 truck mounted rig.
• The core was orientated using a Reflex Ez-Ori Tool.
RC Drilling
• RC drill sample recovery is generally high with sample
recoveries and quality recorded in the database by the
logging geologist.
• Sample recoveries were monitored in real-time by the
presence of Talisman personnel at the drill site.
• No known relationship exists between recovery and grade
and no known bias exists.
Diamond Drilling
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Criteria
Logging
Sub-sampling
techniques and
sample
preparation
JORC Code explanation
Commentary
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.
•
If core, whether cut or sawn and whether
quarter, half or all core taken.
RC Drilling
• RC logging records lithology, mineralogy, mineralisation,
alteration, structure, weathering, colour and other primary
features of the rock samples and is considered to be
representative across the intercepted geological units.
• RC logging is both qualitative and quantitative depending
on the field being logged.
• All RC drill-holes are logged in full to end of hole.
• All RC chip trays are photographed, and then stored onsite
in the Lachlan Copper-Gold Project.
• All information collected is entered directly into laptop
computers or tablets, validated in the field, and then
transferred to the database. The level of logging detail is
considered appropriate for exploration and to support
appropriate mineral resource estimation, mining studies,
and metallurgical studies.
Diamond Drilling
• DD logging is carried out on site once geology personnel
retrieve core trays from the drill rig site. Core is collected
from the rig daily.
• DD logging records lithology, mineralogy, mineralisation,
alteration, structure, weathering, colour and other primary
features of the rock samples and is considered to be
representative across the intercepted geological units.
• All DD drill-holes are logged in full to end of hole.
• Drillhole collar coordinates, azimuth, dip, depth and
sampling intervals are also recorded. DD logging is to
geological contacts.
• DD logging is both qualitative and quantitative depending
on the field being logged. Logging of diamond drilling
includes geotechnical data, RQD and core recoveries.
• Drill core is photographed prior to any cutting and/or
sampling, and then stored onsite in the Lachlan Copper Gold Project. Photographs are available for every diamond
drillhole completed.
• All information collected is entered directly into laptop
computers or tablets, validated in the field, and then
transferred to the database. The level of logging detail is
considered appropriate for exploration and to support
appropriate mineral resource estimation, mining studies,
and metallurgical studies.
RC Drilling
• RC Drilling samples are collected at either one metre or
two metre intervals via a drill rig mounted cyclone and
static cone splitter set to a 12% split to produce a nominal
4-7kg sample which was collected in a pre-numbered
Core recovery data was recorded for each run by
measuring total length of core retrieved against the
downhole interval actually drilled and stored in the
database. TLM representatives continuously monitor core
recovery and core presentation quality as drilling is
conducted and issues or discrepancies are rectified
promptly to maintain industry best standards.
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Criteria
JORC Code explanation
•
Quality of assay
data
and laboratory
tests
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, spectrometres,
handheld XRF instruments, etc, the
parametres 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
Commentary
sample bag.
RC samples are dispatched to a sample preparation lab in
Adelaide ALS where they are dried, crushed (where
required), split and pulverised (total prep) to produce a
0.25g sub sample for base metal analysis or a 50g sub
sample for gold analysis by fire assay.
• QAQC protocols for all RC sampling involved the use of
Certified Reference Material (CRM) as assay standards.
• All QAQC controls and measures were routinely reviewed.
• Sample size is considered appropriate for geochemical
sampling for base-metal and gold mineralisation given the
nature of drilling and anticipated distribution of
mineralisation.
Diamond Drilling
• Diamond drill core (NQ3, HQ or PQ) samples collected for
analysis were longitudinally cut in half, and quarters for the
QAQC samples using a using an automated Almonte core
saw. Core was placed in boats, holding core in place.
• Half core or quarter core sample intervals typically varied
from 0.2m to 1.3m in length. 1m sample intervals were
favoured and are the most common method of sampling,
however sample boundaries do principally coincide with
geological contacts. The remaining core was retained in
core trays.
• DD samples are dispatched to a sample preparation lab in
Adelaide ALS where they are dried, crushed (where
required), split and pulverised (total prep) to produce a
0.25g sub sample for base metal analysis or a 50g sub
sample for gold analysis by fire assay.
• QAQC protocols for all DD sampling involved the use of
Certified Reference Material (CRM) as assay standards.
• All QAQC controls and measures were routinely reviewed.
• Sample size is considered appropriate for geochemical
sampling for base-metal and gold mineralisation given the
nature of drilling and anticipated distribution of
mineralisation.
•
•
•
•
•
Geochemical analysis is carried out on all samples using a
standardised analytical suite and sample preparation
protocol.
A multi (48) analysis by 4-acid digest with ICP-MS
determination (ME-MS61). Over-limit Pb, Zn, Cu, Ag
samples were re-assayed by 4 acid digest with ICP finish
(OG 62 and OG 62h). Assay determination of Pb% is cut to
a maximum of 40% Pb - the upper detection limit of the OG
62h assay method requested from ALS. Two (2) samples
both of 0.5m downhole width within the massive sulphide
zone (224.5m-226.2m) in DRRCD0019 are affected by this
upper limit and have been assigned 40% Pb in the
significant intersections grade estimate.
Au analysis by fire assay/AAS Finish (AA24). Over-limit Au
by fire-assay and gravimetric finish (GRA-21).
QAQC protocols for all DD sampling involved the use of
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Criteria
JORC Code explanation
Commentary
accuracy (i.e. lack of bias) and
precision have been established.
•
•
•
•
•
•
•
Verification of
sampling and
assaying
Location of data
points
•
The verification of significant intersections
by either independent or alternative
company personnel.
•
The use of twinned holes.
•
Documentation of primary data, data entry
procedures, data verification, data storage
(physical and electronic) protocols.
•
Discuss any adjustment to assay data.
•
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.
•
•
•
•
•
certified reference materials as assay standards, inserted
at a 1 in 25 sampling rate.
Field duplicates and blanks are introduced in areas of
identified mineralisation.
All assays are required to conform to the procedural QAQC
guidelines as well as routine laboratory QAQC guidelines.
All QAQC controls and measures were routinely reviewed.
Laboratory checks (repeats) occurred at a frequency of 1 in
25.
Field duplicates returned a reasonable level of precision
with some minor variation in Au attributed to nugget effect
of gold mineralisation.
Each 1m or 2m composite RC Drill sample undergoes
routine pXRF analysis using an Olympus Vanta M-series to
aid in logging and identifying zones of interest. All pXRF
readings were taken in Geo-Exploration mode with a 45
second 3 beam reading. Standard reference materials
were used to calibrate the pXRF instrument every 30
samples.
In relation to the disclosure of visual mineralisation, the
Company cautions that visual estimates of sulfide material
abundance should never be considered a proxy or
substitute for laboratory analysis. Laboratory assay results
are required to determine the type, grade and width of the
visible mineralisation reported in this announcement. The
Company will update the market when laboratory analytical
results become available.
Significant intercepts have been verified by alternate
company personnel.
Logging and sampling data is captured and imported using
Ocris software.
Assay data is uploaded to a secure database directly from
the CSV file provided by the laboratory.
Primary laboratory assay data is always kept and is not
replaced by any adjusted or interpreted data.
Talisman RC drill collar locations are pegged using a handheld GPS. Final collar locations were also picked up using
a hand-held GPS with +/- 3m accuracy. The coordinate
system used is the Geocentric Datum of Australia (GDA)
1994. All coordinates are in the Map Grid of Australia zone
55 (MGA), Universal Transverse Mercator.
talismanmining.com.au
12
4 August 2024
ASX Announcement
Criteria
Data spacing
and distribution
JORC Code explanation
•
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.
Commentary
•
•
•
•
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 introd
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