Strong Off-hole DHEM Conductor Identified at Monty Prospect
Released
Released
Announcement PDF
15 May 2015
COMPANY SNAPSHOT
Strong Off-hole DHEM Conductor Identified
at Monty Following Drilling
Interpreted exhalative lithologies & trace disseminated Cu
Board of Directors
Alan Senior
Non-Executive Chairman
Gary Lethridge
Managing Director
Brian Dawes
Non-Executive Director
Karen Gadsby
Non-Executive Director
Contact Details
6 Centro Avenue
Subiaco, Western
Australia, 6008
Telephone:
+61 8 9380 4230
Facsimile:
+61 8 9382 8200
Email:
info@talismanmining.com.au
Website:
www.talismanmining.com.au
Capital Structure
Shares on Issue:
131,538,627 (TLM)
Options on Issue:
7,250,000 (Unlisted)
ASX: TLM
mineralisation identified in drill-hole.
Follow up drilling planned by Sandfire
Highlights
Sandfire has advised that it has completed reconnaissance
diamond drill-hole TLDD0002A at the Monty Prospect within
Talisman’s Springfield Copper-Gold Project.
TLDD0002A was drilled to test a subtle, but discrete, late-time
EM target, at a vertical depth of approximately 400 metres,
identified by both a high powered surface fixed loop
electromagnetic (FLEM) survey and a high-powered down-hole
electromagnetic (DHEM) survey undertaken by Sandfire on
historical Talisman diamond drill-hole SPD021.
Sandfire has also advised that, a high-powered DHEM survey
undertaken on TLDD0002A has identified a highly conductive
late-time anomaly approximately 15 metres off-hole centred at a
down-hole depth of 410 metres.
Logging of TLDD0002A by Sandfire identified a zone of
haematitic siliceous jasper nodules with trace disseminated
chalcopyrite and significant magnetite between 379.05 metres
and 387.64 metres down-hole within a broader sedimentary
package of approximately 38 metres.
This zone resembles the exhalite seen adjacent to the massive
sulphide mineralisation at DeGrussa and may correlate to the
location of the newly identified conductor.
Sandfire have advised that following the completion of
TLDD0003, they will undertake follow up drilling at Monty to
target the newly identified DHEM conductor.
Strong DHEM conductor identified at Monty Prospect
Overview
Talisman Mining Limited (ASX: TLM – “Talisman” or “the Company”) is pleased to announce that its
exploration farm-in joint venture partner, Sandfire Resources NL (ASX: SFR), has advised that it has
completed reconnaissance diamond drill-hole TLDD0002A at the Monty Prospect within Talisman’s
Springfield Copper-Gold Project (see Figure 1 and Talisman ASX announcement dated 11 May 2015).
TLDD0002A is part of a new exploration programme by Sandfire at the Monty and Homer Prospects,
located within Talisman’s Springfield Project in Western Australia (see Figure 1) in accordance with the
$15 million exploration farm-in joint venture entered into by Talisman and Sandfire in December 2013.
Sandfire have advised Talisman that a high-powered DHEM survey undertaken on TLDD0002A has
identified a highly conductive late-time anomaly approximately 15 metres off-hole potentially indicative of
an accumulation of mineralised massive sulphides.
Monty Prospect Update
TLDD0002A was drilled to test a subtle, discrete off-hole electromagnetic (EM) conductor identified from
both a high-powered surface FLEM survey and a high powered DHEM survey completed on a historical
Talisman drill-hole SPD021.
By way of background, Talisman notes that SPD021 was drilled by Talisman as part of a diamond drilling
program conducted at the Monty Corridor during the June 2011 Quarter (see TLM ASX Announcement 29
July 2011: June 2011 Quarterly Report).
The drill-hole was drilled by Talisman as a follow up to diamond hole SPD020, which intersected a narrow
zone of potentially remobilised copper, including an intersection of 0.3m @ 7.6% Cu (502.0m – 502.3m)*
(see TLM ASX announcement 7 June 2011: Exploration Update –Springfield Project and Table 1).
SPD021, which was drilled up dip of SPD020, also intersected a narrow zone of potentially remobilised
copper, including an intersection of 0.5m @ 1.3% Cu and 1.0g/t Au (347.5m – 348m)* (see TLM ASX
Announcement 29 July 2011: June 2011 Quarterly Report and Table 1).
* This information was prepared and first disclosed under the JORC Code 2004. It has not been updated since to comply
with the JORC Code 2012 on the basis that the information has not materially changed since it was last reported.
Sandfire has advised that a high-powered DHEM survey undertaken on TLDD0002A has identified a
highly conductive late-time anomaly of 50 metres by 50 metres, approximately 15 metres off-hole centred
at a down-hole depth of 410 metres.
This highly conductive anomaly (5,590 siemens) has the potential to represent an accumulation of
mineralised massive sulphides.
Logging of TLDD0002A by Sandfire identified a zone of haematitic siliceous jasper nodules with trace
disseminated chalcopyrite and significant magnetite between 379.05 metres and 387.64 metres down-hole
within a broader sedimentary package of approximately 38 metres.
Sandfire note that the zone closely resembles that of the exhalite adjacent to the massive sulphide
mineralisation at DeGrussa and may correlate to the location of the newly identified conductor.
Sandfire have relocated the diamond drill rig to the Homer Prospect to drill TLDD0003 and drilling has
commenced. When TLDD0003 has been completed, Sandfire intend to relocate the diamond drill rig
back to the Monty Prospect to drill a hole (TLDD0004) targeting the newly identified DHEM
conductor.
Strong DHEM conductor identified at Monty Prospect
Figure 1: Plan showing interpreted geology and the approximate locations of TLDD0002A and TLDD0003 reconnaissance diamond
drill-holes at the Springfield Project, historic diamond drill-holes SPD021 and TLDD0001, and the approximate location of the offhole DHEM conductor at Monty
This announcement is intended to lift the Trading halt requested by Talisman on 14 May 2015.
ENDS
For further information, please contact:
Gary Lethridge – Managing Director
on +61 8 9380 4230
For media inquiries, please contact:
Nicholas Read – Read Corporate
on +61 419 929 046
Competent Persons’ Statement
Information in this ASX release that relates to Exploration Results and Mineral Resources is based on information compiled
by Mr Graham Leaver, who is a member of the Australian Institute of Geoscientists. Mr Leaver is a full time employee of
Talisman Mining Ltd and has sufficient experience which is relevant to the style of mineralisation and types of deposit under
consideration and to the activities undertaken to qualify as a Competent Person as defined in the 2012 Edition of the
“Australian Code for Reporting of Mineral Resources and Ore Reserves”. Mr Leaver consents to the inclusion in this report
of the matters based on information in the form and context in which it appear.
Strong DHEM conductor identified at Monty Prospect
Table 1 – Historic Talisman Monty Prospect Drilling Results, Springfield Project
Hole ID
Easting
Northing
Dip
Azimuth
From
(m)
To (m)
Intercept
(m)
Cu (%)
Au (g/t)
SPD020
743603
7171666
-60
180
502.0
502.3
0.3
7.6%
NSA
SPD021
743598
7171437
-60
180
347.5
348
0.5
1.3%
1.0
Information in table 1 was prepared and first disclosed under JORC Code 2004. It has not been updated since to comply
with the JORC Code 2012 on the basis that the information has not materially changed since it was last reported.
NSA -No significant assay
Table 2 – Drill-hole Information Summary, Springfield Project
Details and coordinates of the historical drill-hole SPD021, the completed drill-hole from last year,
TLDD0001, and drill-holes, TLDD0002A, TLDD0003 and TLD0004, are provided below:
Hole ID
Depth
Dip
Azimuth
Grid_ID
East
North
RL
Lease ID
Hole Status
SPD021
552.80
-60
180
MGA94_50
743598
7171437
598
E52/2282
Complete
TLDD0001
1099.1
-60
360
MGA94_50
740146
7174149
588
E52/2313
Complete
TLDD0002A
500
-60
112
MGA94_50
743540
7171212
602
E52/2282
Complete
TLDD0003
600
-60
360
MGA94_50
740600
7174550
594
E52/2313
Underway
TLDD0004
500
-60
140
MGA94_50
743585
7171286
605
E52/2282
Proposed
Strong DHEM conductor identified at Monty Prospect
Appendix 1 - JORC TABLE 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections)
Criteria
JORC Code explanation
Commentary
Sampling
techniques
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 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 (e.g. submarine
nodules) may warrant disclosure of
detailed information.
Sampling methods employed by Sandfire include half-core
sampling of NQ2 core from diamond drilling (DD).
Sampling is guided by Sandfire DeGrussa protocols and
QAQC procedures as per industry standard.
DD sample size reduction is completed through a Jaques jaw
crusher to -10mm and all samples Boyd crushed to -4mm and
pulverised via LM2 to nominal 90% passing -75µm. Pulp size
checks are completed.
Sandfire core samples are routinely sampled for SG
determination.
Drilling
techniques
Drill type (e.g. core, reverse circulation,
open-hole hammer, rotary air blast,
auger, Bangka, sonic, etc) and details
(e.g. core diameter, triple or standard
tube, depth of diamond tails, facesampling bit or other type, whether core
is oriented and if so, by what method,
etc).
Sandfire diamond drilling is completed by DD rig with a core
size of NQ2.
All surface drill collars are surveyed using RTK GPS.
Holes are inclined at varying angles for optimal ore zone
intersection from the drilling position.
All core where possible is oriented using a Reflex ACT II RD
orientation tool with stated accuracy of +/-1% in the range 0
to 88°.
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
sample bias may have occurred due to
preferential loss/gain of fine/coarse
material.
Sandfire core is meter marked and orientated to check against
the driller’s blocks, ensuring that all core loss is taken into
account.
Diamond core recovery is logged and captured into the
database with weighted average core recoveries of
approximately 99%. Sample quality is routinely captured in
the database.
Samples are routinely weighed and captured into a central
secured database.
No sample recovery issues have impacted on potential
sample bias.
Strong DHEM conductor identified at Monty Prospect
Logging
Whether core and chip samples have
been geologically and geotechnically
logged to a level of detail to support
appropriate Mineral Resource
estimation, mining studies and
metallurgical studies.
Whether logging is qualitative or
quantitative in nature. Core (or costean,
channel, etc) photography.
The total length and percentage of the
relevant intersections logged.
Sandfire geological logging is completed for all holes and
representative across the ore body. The lithology, alteration,
and structural characteristics of drill samples are logged
directly to a digital format following standard procedures
and using Sandfire DeGrussa geological codes. Data is
imported into the central database after validation in
LogChief™.
Logging is both qualitative and quantitative depending on field
being logged.
All diamond drill core is digitally photographed and stored.
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.
Sandfire diamond core orientation is completed where
possible and all core is marked prior to sampling. Half core
samples are produced using Almonte Core Saw. Samples are
weighed and recorded.
Sandfire sample preparation at UltraTrace in Perth involves
the original samples being dried at 80° for up to 24 hours and
weighed. DD Samples are then crushed through Jaques
crusher to nominal -10mm. Second stage crushing uses
Boyd crusher to nominal -4mm. Pulverising is completed
using LM5 mill to 90% passing 75%µm.
Sandfire has protocols that cover auditing of sample
preparation at the laboratories and the collection and
assessment of data to ensure accurate steps in producing
representative samples for the analytical process. Key
performance indices include contamination index of 90% (that
is 90% blanks pass); Crush Size index of P95-10mm; Grind
Size index of P90-75µm and Check Samples returning at
worse 20% precision at 95% confidence interval and bias of
5% or better.
Duplicate analysis is routinely completed.
The sample size is appropriate for the VHMS and Gold
mineralisation styles.
Strong DHEM conductor identified at Monty Prospect
Quality of
assay data and
laboratory tests
The nature, quality and appropriateness
of the assaying and laboratory
procedures used and whether the
technique is considered partial or total.
For geophysical tools, spectrometers,
handheld XRF instruments, etc, the
parameters used in determining the
analysis including instrument make and
model, reading times, calibrations
factors applied and their derivation, etc.
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.
Sandfire samples submitted to Ultra Trace in Perth are
assayed using Mixed 4 Acid Digest (MAD) 0.3g charge and
MAD Hotbox 0.15g charge methods with ICPOES or
ICPMS. The samples are digested and refluxed with a
mixture of acids including Hydrofluoric, Nitric, Hydrochloric
and Perchloric acids and conducted for multi elements
including Cu, Pb, Zn, Ag, As, Fe, S, Sb, Bi, Mo, Re, Mn, Co,
Cd, Cr, Ni, Se, Te, Ti, Zr, V, Sn, W and Ba. The MAD Hotbox
method is an extended digest method that approaches a total
digest for many elements however some refractory minerals
are not completely attacked. The elements S, Cu, Zn, Co, Fe,
Ca, Mg, Mn, Ni, Cr, Ti, K, Na, V are determined by ICPOES,
and Ag, Pb, As, Sb, Bi, Cd, Se, Te, Mo, Re, Zr, Ba, Sn, W are
determined by ICPMS. Samples are analysed for Au, Pd and
Pt by firing a 40g of sample with ICP AES/MS finish. Lower
sample weights are employed where samples have very high S
contents. This is a classical FA process and results in total
separation of Au, Pt and Pd in the samples.
Sandfire DeGrussa QAQC protocol is considered industry
standard with standard reference material (SRM) submitted
on regular basis with routine samples.
Sandfire insert SRMs and blanks at a minimum of 5%
frequency rate. A minimum of 2% of assays are routinely resubmitted as Check Assays and Check Samples through
blind submittals to external and primary laboratories
respectively. Adhoc umpire checks are completed annually.
Surface Fixed Loop Electromagnetic (FLEM) geophysical
surveys have been conducted by Sandfire . Survey
parameters include:
o Vortex VTX – 100 transmitter, SMART fluxgate
sensor and SMARTem receiver
o
1000m x 1000m single turn loop
Downhole Electromagnetic (DHEM) Geophysical Surveys
have been completed by Sandfire. Geophysical survey
parameters include:
o Vortex VTX-100 transmitter, DigiAtlantis probe and
SMARTem24 receiver
o
200m x 200m single turn loop
Verification of
sampling and
assaying
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.
No new significant drilling intersections are included in this
report.
No twinned holes are being drilled as part of this
programme.
Primary data is captured on field tough book laptops using
Logchief™ Software. The software has validation routines and
data is then imported into a secure central database.
The primary data is always kept and is never replaced by
adjusted or interpreted data.
Location of
data points
Accuracy and quality of surveys used to
locate drill-holes (collar and down- hole
surveys), trenches, mine workings and
other locations used in Mineral
Resource estimation.
Specification of the grid system used.
Quality and adequacy of topographic
control.
Sandfire DeGrussa Survey team undertakes survey works
under the guidelines of best industry practice.
Downhole survey are completed by electronic multishot
systems.
MGA94 Zone 50 grid coordinate system is used.
Strong DHEM conductor identified at Monty Prospect
Data spacing
and distribution
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.
This programme represents reconnaissance exploration
drilling.
Orientation of
data in relation
to geological
structure
Whether the orientation of sampling
achieves unbiased sampling of possible
structures and the extent to which this is
known, considering the deposit type.
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.
Sandfire exploration holes are oriented to achieve high
angles of intersection. Diamond drilling is used as required
to determine structural orientations in regional programs.
Sample
security
The measures taken to ensure sample
security.
All samples are prepared onsite under the supervision of
Sandfire Geological staff.
Sandfire samples are transported to the Perth Ultra Trace
laboratory by Toll IPEC or Nexus transport companies in
sealed bulka bags, or to the onsite laboratory by company
personnel.
The laboratories receipt received samples against the sample
dispatch documents and issues a reconciliation report for
every sample batch.
Audits or
reviews
The results of any audits or reviews of
sampling techniques and data.
The Sandfire sampling techniques and data collection
processes are of industry standard and have been subjected
to multiple internal and external reviews.
Strong DHEM conductor identified at Monty Prospect
Section 2 Reporting of Exploration Results
(Criteria in this section apply to all succeeding sections)
Criteria
JORC Code explanation
Commentary
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.
Diamond drilling by Farm-in Partner Sandfire is on
tenements E52/2313 and E52/2282. These tenements are
part of Talisman’s 100% owned Springfield Project,
150km north-east of Meekatharra, WA. These tenements
fall within the Department of Conservation-managed
Doolgunna pastoral lease.
Exploration
done by other
parties
Acknowledgment and appraisal of
exploration by other parties.
Exploration work at Springfield completed prior to
Talisman’s tenure included geochemical soil and rock chip
sampling combined with geological mapping. Some
targeted RC drilling was completed over gold and
diamond targets.
Geology
Deposit type, geological setting and
style of mineralisation.
Mineral
tenement and
land tenure
status
All Springfield tenements are current and in good
standing.
Talisman’s Doolgunna Project lies within the Proterozoicaged Bryah rift basin enclosed between the Archaean
Marymia Inlier to the north and the Proterozoic Yerrida
basin to the south.
The principal exploration targets at the Doolgunna
Projects are Volcanogenic Massive Sulphide (VMS)
deposits located with the Proterozoic Bryah Basin of
Western Australia.
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 drillholes:
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.
Refer to Table 2 -Drill-hole information summary ,
Springfield Project.
Strong DHEM conductor identified at Monty Prospect
Data
aggregation
methods
In reporting Exploration Results,
weighting averaging techniques,
maximum and/or minimum grade
truncations (e.g. 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.
The assumptions used for any reporting
of metal equivalent values should be
clearly stated.
No new drilling intersections reported.
Relationship
between
mineralisation
widths and
intercept
lengths
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 (e.g. ‘down
hole length, true width not known’).
No new drilling intersections reported.
Diagrams
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.
Appropriate maps with scale are included within the body
of the accompanying document.
Balanced
reporting
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.
The accompanying document is considered to represent a
balanced report.
Other
substantive
exploration
data
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.
Down Hole Electromagnetic (DHEM) Geophysical survey
results are discussed in the body of the document.
No new drilling intersections reported.
Strong DHEM conductor identified at Monty Prospect
Further work
The nature and scale of planned further
work (e.g. tests for lateral extensions or
depth 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.
Sandfire has indicated to Talisman that a follow-up drillhole will be completed to target the geophysical anomaly
identified in drill-hole TLDD0002A. Drill-hole details are
included in Table 2 –Drill-hole Information Summary,
Springfield Project
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