Latest results extend Rip n Tear discovery to over 1.8km
Released
Released
Announcement PDF
14 March 2024
Latest results extend Rip n Tear discovery to over
1.8km strike and 200m depth
Phase 1 diamond drilling complete; RC and diamond drilling now underway at Durnings
Highlights:
•
Assay results received from additional extensional diamond (DD) drill-holes completed at the
Rip n Tear Prospect, part of the 100%-owned Lachlan Project in NSW.
•
The diamond extension to MYRCD0009 was designed to test for depth extensions and
continuity of mineralisation from previous broad RC drill intercepts that terminated in
mineralisation at the northern MLEM anomaly, providing a diamond drilling tail from the end of
the RC hole at 166m down to 272.9m. Results include:
MYRCD0009
o
DD Tail
§
o
Combined RC + DD tail
§
•
19m at 1.4% Pb, 12.2g/t Ag, 0.05% Zn from 167m to 186.0m
86m at 0.8% Pb, 6.6g/t Ag, 0.04% Zn from 100m to 186m
Diamond hole MYDD0012 was drilled to a depth of 447m to test mineralisation down dip/plunge
of discovery hole MYRCDD0002. Results include:
MYDD0012
§
87m at 0.5% Pb, 5.3g/t Ag, 0.05% Zn from 261m to 348m
•
Extensional diamond drilling has also been completed at MYDD0013, located at the eastern
extension of the MLEM survey anomaly, approximately 800m east of MYRCD0003. This hole
was designed to target further extensions of the prospective mineralised horizon, with assays
awaited.
•
The latest results have confirmed the depth extension and continuity of lead-silver-zinc
mineralisation at Rip n Tear over a strike length of more than 1.8km and down-hole widths of up
to 200m, highlighting the substantial scale of the mineralised system.
•
The diamond rig has now commenced extensional drilling on RC holes at the Durning’s
discovery.
1
Talisman Mining Limited (ASX: TLM, Talisman) is pleased to advise that it has received further
significant assay results from diamond drilling completed in early 2024 at the Rip n Tear Prospect,
part of its 100%-owned Lachlan Project in central NSW, targeting depth extensions to the broad
zones of lead-silver mineralisation intersected in initial Reverse Circulation (RC) drilling.
Rip n Tear is located approximately 35km north of Condobolin on EL8615 and approximately 20km
north-west of the Company’s Durnings discovery. Both Rip n Tear and Durnings were discovered as
part of a 7,200m RC drilling campaign completed in late 2023 across four priority prospects within
the Lachlan Project area (see Figure 1).
Assays have now been received for holes MYRCD0009 (a diamond drill-hole extension of a previous
RC drill hole) and MYDD0012 (a diamond drill-hole from surface located down dip of discovery hole
MYRCD0002), both completed in January 2024.
Figure 1 – Lachlan Project location plan highlighting prospect locations along the Canbelego-Mineral Hill Volcanic Belt.
2
Background
The Rip N Tear prospect is a large lead-silver-zinc target on EL8615 defined by strongly anomalous
base metal soil geochemistry containing two large, coherent conductive MLEM anomalies (ASX: TLM,
8 May 2023).
The prospect is situated within a complex structural setting associated with NNE and NE trending
faults, which are interpreted to provide a pathway for mineralised fluids from local granite intrusions.
Historical drilling was limited to three percussion holes (~61m deep, drilled in 1970’s). The initial
Talisman program consisted of seven RC holes designed to test two conductive anomalies at depth
at approximately 800m to 1,000m drill-hole spacing.
Results from the initial RC drilling (Table 2) (ASX: TLM, 20 October and 6 December 2023). included:
•
MYRC0002 – 192m at 1.32% Pb, 10.1g/t Ag, 0.06% Zn from 40m to 232m end-of-hole;
•
MYRC0003 – 80m at 1.56% Pb, 14.7g/t Ag, 0.11% Zn from 188m to 268m end-of-hole;
•
MYRC0004 – 18m at 0.28% Pb, 5.2g/t Ag and 0.01% Zn from 142m to 160m;
•
MYRC0005 – 6m at 0.81% Pb and 5.6g/t Ag from 44m to 50m;
•
MYRC0006 – 10m at 0.85% Pb, 3.3g/t Ag and 0.02% Zn from 246m to 256m; and
•
MYRC0007 – 10m at 0.81% Pb, 12.4g/t Ag and 0.04% Zn from 222m to 232m.
RC drilling of a further four holes (MYRC008-MYRC0011) for 688m was completed in early
December targeting strike extensions of MYRC0002 and MYRC0003, guided by the extensive
MLEM anomaly (see Figure 2).
Drilled at approximately 500m spacing, these RC holes were designed to target a buried lead-silver
and sulphide-rich sedimentary unit which appears to host the mineralisation.
This RC drilling has intersected broad zones of disseminated galena and silver with accessory
sphalerite with strong sulphide mineralisation in sericite and ankerite/siderite altered sedimentary
rocks in the target position.
Diamond drill tails were completed in December 2023 on RC holes MYRC0002 and MYRC0003 in
the north and MYRC0004 in the south of the Rip n Tear Prospect area. All holes intersected further
significant zones of sulphide mineralisation.
Assay results for the recent extensional diamond drilling are summarised in Table 2., Significant
results are illustrated in Figure 2:
The summary of results received to date is listed and includes:
Northern Anomaly
MYRCD0009
o
Diamond Tail
§
o
19m at 1.4% Pb, 12.2g/t Ag, from 167m to 186.0m
Combining the parent RC hole with the diamond tail results in:
3
§
86m at 0.8% Pb, 6.6/t Ag, 0.04% Zn from 100m to 186m
MYDD0012
o
Diamond
§
87m at 0.5% Pb, 5.3g/t Ag, 0.05% Zn from 261m to 348m, including
§
38.4m at 0.6% Pb, 5.8g/t Ag, 0.04% Zn from 309.6m to 348m
Figure 2 – Rip n Tear RC and diamond drilling results over MLEM Geophysical survey image. True width in MYRCDD002 and
MYCRDD003 is approximately 40% to 50% of downhole intersection.
Geology and Mineralisation
The Rip n Tear Prospect is located within EL8615 on the eastern edge of the Canbelego-Mineral Hill
Rift Zone (Figure 1), adjacent to a large, controlling, basin margin, NW-SE oriented structure.
Devonian-age sediments of the Ewolong Formation (sandstone and conglomerate) and Gwando
Siltstone host the prospect. To the west lies the older Ordovician-age Girilambone Group, which is
intruded by the early Devonian-age Yellow Mountain Granite.
4
The granite intrusion(s) are interpreted to be the source of heat, fluid and metal for several other
lead-silver-zinc and copper-gold deposits and mineralised prospects along the Mineral Hill Rift. Rip
n Tear is cut by two NW-SE trending faults interpreted to be transverse faults in a rift setting.
The target horizon consists of broad zones of disseminated and blebby sulphides (galena, pyrite and
rare sphalerite) associated with sericite and ankerite/siderite alteration hosted in sandstone, siltstone
and coarse angular quartz breccia/conglomerate. The mineralised horizon appears extensive and
consistent over significant strike length and depth as illustrated in Figure 2 and Figure 3.
MYRCDD002 and MYRCDD003 are interpreted as being drilled oblique to the dip of the mineralised
zones and therefore true width of these zones are approximately 40% to 50% of downhole widths.
MYRCD0009 and MYDD0012 are interpreted as being drilled at a high angle to the mineralised
zones. True widths of mineralised zones in these holes are estimated at approximately 80% of
downhole widths (Figure 3).
MYDD0012 intersected Girilambone sediments close to surface, faulted against mineralised
Devonian sediments at depth. See Figure 3. The lead-silver mineralisation is confirmed at surface
on this section by the Rip n Tear Workings approximately 250m north of MYRCD0002 (Figure 2 and
Figure 3) illustrating the extensive nature of the mineralisation.
Rip n Tear – Next Steps
The drilling rig has completed a diamond tail on MYRCD0008 (assays pending) and a diamond hole
from surface, MYDD0013 (assays pending), to test the mineralised horizon 500m west and 800m
east of MYRCDD0003 (Talisman’s easternmost hole to date) to establish if the mineralisation
defined to date continues to the east (see Figure 2).
The diamond drill rig has now relocated to Durnings to undertake extension drilling of previously
drilled RC holes at that location.
Following the current Durnings RC program, a further RC drilling program at Rip n Tear is planned
to test near-surface mineralisation defined by strongly anomalous surface soil geochemistry, ore
grade rock chips and gossanous outcrop located adjacent to the southern MLEM anomaly.
5
Figure 3 – Rip n Tear – Interpreted section of the Rip n Tear northern MLEM anomaly deposit. True width of mineralisation in
MYRCDD0002 is approximately 40% to 50% of downhole intersection. True width of mineralisation in MYDD0012 is approximately
80% of downhole intersection.
Management Comment
Talisman’s Managing Director, Andrew Munckton, said: “These latest results from extensional
diamond drilling at Rip n Tear provide further encouragement for the potential of a major new base
metals discovery.
“These new results demonstrate the continuity of the lead-silver mineralised horizon, hosted in a
folded and faulted sequence of sediments, over a strike extent of more than 1.8km and downhole
widths up to 200m. This clearly demonstrates the significant scale of the mineralised system.
“The initial diamond drilling program has been completed, with results currently awaited for a number
of holes aimed at assessing the extent of the mineralisation with diamond tails from RC hole
MYRC0008 and surface diamond hole MYDD0013. Confirmation of mineralisation in these holes
would further extend the mineralisation at Rip n Tear to a strike length of 2.6km and further enhance
the scale of the opportunity.
“Importantly, the diamond drilling and multi-element assaying at Rip n Tear provides detailed
geological context to the mineralization, which appears to be extensive, consistent and detectable
with geophysics.
“While it is still very early in the exploration phase, the Rip n Tear Prospect appears to have all the
indicators of an extensive mineralised system in a sedimentary basin setting.
“The next phase of work at Rip n Tear, commences soon with additional RC drilling program to
assess the as-yet-untested near surface mineralisation adjacent to the Southern MLEM anomaly.
6
The near surface area above the large anomaly is clearly prospective indicated by ore-grade rock
chips and gossanous outcrop. This next stage of work will be undertaken following the completion
of the current RC program at Durnings and will conclude our initial assessment of the exciting Rip n
Tear base metals project.”
Ends
For further information, please contact:
Andrew Munckton - Managing Director
on +61 4 3563 5598
Nicholas Read (Media inquiries)
on +61 4199 29046
This release has been authorised by the Board of Talisman Mining Limited.
7
Table 1: Drill-hole information summary - Rip N Tear
Details and coordinates of the RC and Diamond Holes relevant to this release.
Exploration
Licence
Prospect
Hole
Type
Hole ID
Easting
Northing
RL
Dip
Azimuth
(MGA 94)
EOH
Depth
EL8615
Rip N Tear
RC
MYRC0008
489184
6413709
276
-60
345
178
EL8615
Rip N Tear
RC
MYRCDD0009
488279
6413817
270
-60
331
272.9
EL8615
Rip N Tear
RC
MYRC0010
487750
6413341
273
-60
328
178
EL8615
Rip N Tear
RC
MYRC0011
488445
6413579
273
-60
329
156
EL8615
Rip N Tear
RC
MYDD0012
488630
6413719
274
-60
323
447
EL8615
Rip N Tear
RC
MYDD0013
490425
6413807
264
-60
340
283
EL8615
Rip N Tear
RC
MYRCD0002
488727
6413960
282
-60
202
318
EL8615
Rip N Tear
RC
MYRCD0003
489671
6414071
264
-60
180
411
EL8615
Rip N Tear
RC
MYRCD0004
487799
6412334
270
-60
299
457
Table 2: RC and DD drill-hole assay intersections for Mineralized Zones (Significant Intersections)
Details of significant RC and DD drilling intersections received to date for the Rip n Tear prospects by Talisman
are provided below.
8
All Table 2 intersections are length-weighted assay intervals either from two metre assay intervals taken
directly from the RC drill rig splitter or 0.5 to 1.5 metre Diamond core assay samples.
All listed intersections are reported as down hole intersections at 0.5% Pb and/or 5g/t Ag and/or 0.20 % Cu
and/or 0.5 % Zn and or 0.25g/t Au lower cut-off as indicated in the comments section of Table 2. True width is
approximately 40% to 50% of reported downhole intersection in MYRCDD002 and MYRCD003. True width is
approximately 80% of reported downhole intersection in MYDD0012 and MYRCD0009. Appendix 2 contains
full details on sampling and data aggregation methods including cut-off grades.
About Talisman Mining
9
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 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 1000 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 forwardlooking statements. Forward-looking 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 forward-looking 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.
10
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.
Measures taken to maximise sample
recovery and ensure representative nature
of the samples.
RC Drilling samples are collected at 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 Almnonte 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 30g 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
11
Criteria
JORC Code explanation
•
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.
Commentary
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
appropriate mineral resource estimation, mining studies,
12
Criteria
JORC Code explanation
Commentary
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 ssay
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 Almnonte 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, 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.
•
•
•
•
•
•
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.
Field duplicates returned a reasonable level of precision
13
Criteria
•
JORC Code explanation
Commentary
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.
with some minor variation in Au attributed to nugget effect
of gold mineralisation.
Each 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
Data spacing
and distribution
Orientation of
data in relation
•
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.
•
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.
•
Whether the orientation of sampling
achieves unbiased sampling of possible
•
•
•
•
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.
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.
•
Drill spacing at the Lachlan Copper-Gold Project varies
depending on requirements.
No mineral resource is being reported for the Lachlan
Copper-Gold Project.
No sample compositing
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