Exploration Update on Initial Drilling at Durnings South
Released
Released
Announcement PDF
ASX: TLM | 20 November 2024
ASX Announcement
Exploration Update – Initial Drilling of CopperGold and Base Metal Zones at Durnings South
Highlights:
•
Strong start to the planned 4,700m, 12-hole Reverse Circulation (RC) and diamond drill program at the
Durnings South prospect, part of the 100%-owned Lachlan Project in NSW.
•
All three holes completed to date have intersected the target zones. See Note 1.
•
Hole DRRCD0027 intersected the target horizon approximately 30 metres up-dip of the copper-gold
intercepts in the discovery hole, DRRCD0019.
Assays expected in ~3-4 weeks.
Hole DRRCD0028 underway, targeted 50m down-dip of DRRCD0019.
•
•
•
•
•
Diamond hole DRDD0025 intersected the target base metals (lead-zinc-silver) horizon approximately
50m down-dip of discovery holes DRRCD0006 and DRRCD0019.
Second diamond hole, DRDD0026 also intersected the base metals target horizon approximately 100m
along strike of holes DRRCD0006 and DRRCD0019.
Assays expected in ~2-3 weeks.
Note 1. Cautionary Statement
Determination of mineralisation has been based on geological logging, visual observation and confirmation using a pXRF machine. No pXRF results are reported however the tool was
used to verify the mineralisation. pXRF readings may not be representative of the average concentrations of the elements of interest in a certain volume of material. As such, pXRF
results are used as a logging/sampling verification tool only. Laboratory analysis will be required to determine the level of mineralisation contained in the mineralised zones. Visual
estimates of mineral abundance or anomalism recorded on pXRF should never be considered a proxy or substitute for laboratory analyses where concentrations or grades are the
factor of principal economic interest. Visual estimates also potentially provide no information regarding impurities or deleterious physical properties relevant to valuations.
Talisman Mining Limited (ASX: TLM, Talisman) is pleased to provide an update on the progress of the follow-up
Reverse Circulation and diamond drilling program underway at the Durnings South prospect, part of its 100%owned Lachlan Project in central NSW.
Durnings is located approximately 25km north of Condobolin within the Lachlan Project area (see Figure 1). Highgrade base and precious metal assay results were previously reported from Talisman’s initial broad-spaced 6hole RC drilling program (DRRC0006 to DRRC0011) and follow up 13-hole (DRRC0012 to DRDD0024) drilling
program completed in April 2024. (See ASX announcements 14 December 2023 and 9 January, 15 May, 6 June
2024.)
In the current program, a total of three diamond drill-holes have been completed with a fourth step-out hole
currently in progress. All holes drilled to date have successfully intersected the target mineralised horizons, as
predicted from down-hole geophysics models.
DRRCD0027 encountered the targeted chalcopyrite-galena-gold rich horizon approximately 30 metres up-dip of
the strong copper-gold intercepts in the discovery hole DRRCD0019; the fourth hole, DRRCD0028 is in progress
to test this horizon approximately 50 metres down-dip.
Meanwhile, holes DRDD0025 and DRDD0026, drilled to step out from the original discovery holes DRRCD006 and
DRRCD0019, intersected the targeted galena-sphalerite (lead-zinc-silver) mineralisation, potentially extending
the base metal rich zone.
Both zones intersected in the current drilling program are coincident with broad geophysical signatures which
reinforce geological interpretations of the orientation of the mineralisation (Figure 2).
Talisman Mining | Suite 1, Ground Floor, 33 Colin St, West Perth 6005
ABN
ABN71079
71079536
536495
495
talismanmining.com.au
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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
Condobolin) is also shown.
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Figure 2 – Durnings Prospect showing Offset PDIP Survey chargeability (LHS) and resistivity (RHS) at 260m below
surface. The chargeability and resistivity responses in the images correspond to the position of the intersection
of the Copper-Gold Mineralised Trend and the Base Metals Mineralised Trend at South Durnings.
Note the position of drill holes DRDD0025, DRDD0026, DRRCD0027 and DRRCD0028 (this announcement)
drilled to test the mineralisation perpendicular to the trend interpreted from geophysics.
Progress – Copper-Gold Target
Drilling in DRRCD0027 consisted of an RC pre-collar from surface to 112m then HQ core from 112m to 495.5m.
The hole was drilled at approximately 50 degrees towards grid south-east, perpendicular to the modelled target
zone to intersect approximately 30m vertically above the DRRCD0019 copper-gold zone intersection.
Hole DRRCD0028, which is in progress, consists of 96m of RC pre-collar, has a target depth of approximately
500m down-hole and is targeted 50m down-dip of the copper-gold mineralisation intersected in DRRCD0019.
Refer to Figure 2 for drill-hole collar locations relative to Offset Pole Dipole IP chargeability and resistivity images.
Progress – Base Metal Target
Drilling in both DRDD0025 and DRDD0026 consisted of PQ sized core from surface to competent rock (~50m
downhole) and HQ sized drill core to 486.7m down-hole in DRDD0025 and 454.2m down-hole in DRDD0026.
The holes were drilled at 60 degrees towards grid north-west to intersect the target zone defined by DRRC0006
and DRRCD0019 approximately 50m down-dip in DRRCD0025 and 100m along strike in DRDD0026.
Refer to Figure 2 for drill-hole collar locations relative to Offset Pole Dipole IP chargeability and resistivity images.
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Information relating to the observed sulphide intercepts:
1. The nature of the sulphide minerals
•
Fine-grained semi-massive sulphide
•
Fine-grained disseminated sulphide
•
Coarse grained clustered sulphide
•
Coarse grained blebby sulphides
•
Sulphide as vein and breccia zone matrix fill
•
Sulphide in stringy shears and bands
2. Minerals observed
•
The minerals visually observed in the drill core are as follows:
• Chalcopyrite, • Galena, • Sphalerite, • Pyrite.
3. Estimates of abundance of minerals observed
The estimated abundance of minerals observed is provided in Table 1 as follows:
Downhole
Min Style
Min Style
Length (m)
(Major)
(Minor)
Semi-massive
Disseminated
Chalcopyrite
%
Hole ID
From
(m)
To (m)
DRDD0025
283.9
284.1
0.2
DRDD0025
284.1
289.5
5.4
DRDD0025
289.5
290
0.5
Semi-massive
Disseminated
25-50
10-25
2-5
DRDD0026
272
274
2
Vein
Disseminated
1-2
2-5
1-2
DRDD0026
368.5
368.8
0.3
Vein
Disseminated
0.1-0.5
DRDD0026
368.8
369.2
0.4
Vein
Disseminated
1-2
DRRCD002
7
441.7
443.9
2.2
Vein breccia
Galena %
Sphalerite %
Pyrite %
5-10
2-5
5-10
Disseminated
5-10
2-5
0.1-0.5
5-10
2-5
2-5
5-10
Table 1 – Summary sulphide mineral abundance logging from DRDD0025, DRDD0026 and DRRCD0027.
Note 1. Cautionary Statement
Determination of mineralisation has been based on geological logging, visual observation and confirmation using a pXRF machine. No pXRF results are reported however the tool
was used to verify the mineralisation. pXRF readings may not be representative of the average concentrations of the elements of interest in a certain volume of material. As such,
pXRF results are used as a logging/sampling verification tool only. Laboratory analysis will be required to determine the level of mineralisation contained in the mineralised zones.
Visual estimates of mineral abundance or anomalism recorded on pXRF should never be considered a proxy or substitute for laboratory analyses where concentrations or grades are
the factor of principal economic interest. Visual estimates also potentially provide no information regarding impurities or deleterious physical properties relevant to valuations.
Next Steps
Diamond drilling targeting the copper-gold mineralised zone and other targets within the Offset Pole Dipole IP
survey chargeability and resistivity anomaly continues from established drill pads located to the north and west
of the targeted zone position.
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Drilling is currently in progress on DRRCD0028, the fourth hole targeting the deeper copper-gold zone
mineralisation. Further follow-up drilling is planned and will take several more weeks as the Company
progressively improves its understanding of the spatial extents of mineralisation within the zones.
Samples for the RC and diamond holes drilled to date have been progressively submitted to ALS since drilling
commenced in late October. Assay results for the initial holes, DRDD0025 and DRDD0026 are expected in 2-3
weeks, with assays from DRRCD0027 expected to be returned in the next 3-4 weeks.
Management Comment
Talisman’s Managing Director, Andrew Munckton, said: “We have made a great start to our follow-up drill program
at Durnings, with a 100% success rate so far with the first few holes.”
“The first two holes, DRDD0025 and DRDD0026 were designed to intersect the base metal position – and both
achieved their intended target, giving us confidence in the orientation of the mineralised vein positions.”
“The third and fourth holes, DRRCD0027 and DRRCD0028 are designed to test primarily, the up-dip and down-dip
position of the strong copper-gold intercept in discovery hole DRRCD0019.”
“We are encouraged by these early indications and await assay results as we continue to systematically stepout from the previously reported high-grade zones. Drilling is underway on the fourth step out hole at the coppergold zone.”
“We look forward to assays over the next few weeks.”
–– 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
EL8660
EL8660
Durnings
Durnings
Durnings
Durnings
Durnings
DRRC0022
DRDD0023
DRDD0024
DRDD0025
DRDD0026
EL8660
Durnings
DRRCD0027
EL8660
Durnings
DRRCD0028
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
DD
DD
RC &
DD
RC &
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
328
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
326.8
505988
6386457
281
-75
235
375.9
506040
505749
505754
506188
506129
6386282
6386641
6386929
6386283
6386216
283
289
296
280
281
-75
-74
-55
-60
-60
236
15
51
299.9
299.65
304
251.4
249
486.7
454.2
505727
6386407
286
-60
100
495.5
505721
6386408
286
-64
100
***
EOH Depth
186
210
216
216
210
*** Drillhole DRRCD0028 is currently in progress
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.
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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
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. Mabel 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
Drilling
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.
•
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).
Commentary
•
•
•
•
•
•
•
•
•
Drill sample
recovery
•
Method of recording and assessing core
and chip sample recoveries and results
assessed.
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 2 metre composite pXRF
analysis using a 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 third
longitudinally, using an automated Almonte core saw Core
was placed in boats, holding core in place. Core sample
intervals varied from 0.3 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-AAS 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
Multipurpose UDR1200 truck mounted rig. RC components
in DRRCD0027 and DRRCD0028 were undertaken by the
UDR 1200.
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.
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Criteria
JORC Code explanation
•
•
Commentary
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.
•
No known relationship exists between recovery and grade
and no known bias exists.
Diamond Drilling
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.
•
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.
RC Drilling
Whether logging is qualitative or
quantitative in nature. Core (or costean,
channel, etc.) photography.
•
The total length and percentage of the
relevant intersections logged.
•
•
•
•
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
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Criteria
JORC Code explanation
Commentary
appropriate mineral resource estimation, mining studies,
and metallurgical studies.
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
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.
RC Drilling
•
•
•
•
•
Diamond Drilling
•
•
•
•
•
•
Quality of assay
data
•
and laboratory
tests
•
RC samples were dried, crushed (where required), split
and pulverised (total prep) to produce a 0.25g sub sample
for base metal analysis or a 30g 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.
Field duplicates were collected at a 1 in 30 sample rate.
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 0.3m 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 were dried, crushed (where required), split
and pulverised (total prep) to produce a 0.25g sub sample
for base metal analysis or a 30g 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.
Field duplicates were collected at a 1 in 30 sample rate.
The nature, quality and appropriateness of
the assaying and laboratory procedures
used and whether the technique is
considered partial or total.
RC Drilling
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.
•
•
•
•
•
QAQC protocols for all RC sampling involved the use of
certified reference materials as assay standards, inserted
at a 1 in 50 sampling rate.
Blank samples were inserted at a 1 in 50 sampling rate
using a Certified Reference Material (CRM) coarse blank.
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.
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Criteria
JORC Code explanation
•
Nature of quality control procedures
adopted (e.g. standards, blanks,
duplicates, external laboratory checks) and
whether acceptable levels of accuracy (i.e.
lack of bias) and precision have been
established.
Commentary
•
•
•
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 sample undergoes routine
pXRF analysis using a 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.
Diamond Drilling
•
•
•
•
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.
•
•
•
•
•
QAQC protocols for all DD sampling involved the use of
certified reference materials as assay standards, inserted
at a 1 in 50 sampling rate.
Blank samples were inserted at a 1 in 50 sampling rate
using a certified reference material coarse blank.
Field Duplicates were inserted at a 1 in 30 sampling rate.
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 DGPS unit with +/- 20cm accuracy. The
coordinate system used is the Geocen
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