Sinclair - Narrow Zones of Massive Sulphides Intersected
Released
Released
Announcement PDF
F o c u s e d A u s t r a l i a n M i n e r a l E x p lo r a t i o n C o m p a n y
20th October 2015
COMPANY SNAPSHOT
Board of Directors
Alan Senior
Non-Executive Chairman
Narrow Zones of Massive Sulphides
Intersected in First Drill Hole at Sinclair
Multiple zones including up to 1.4m of massive, matrix and breccia
sulphides intersected at Delphi North prospect
Highlights
Gary Lethridge
Managing Director
Brian Dawes
Non-Executive Director
Karen Gadsby
Non-Executive Director
• Talisman’s maiden diamond drill hole, SND001, located at the Delphi North
Prospect, 4km south of the Sinclair nickel mine, has intersected a number of
massive nickel sulphide horizons including:
o
1.4 metres of massive, matrix and breccia sulphides within a 2.2 metre
interval from 396.9 metres down-hole (true width not known at this time; top
of the intersection is approximately 348 metres below surface); and
o
0.5 metres of matrix sulphides from 419.5 metres down-hole (true width not
known at this time; top of the intersection is approximately 367 metres below
surface).
Contact Details
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:
148,559,904 (TLM)
Options on Issue:
6,400,000 (Unlisted)
ASX: TLM
Photograph of massive sulphides in drill core from drill hole SND001
• Drilling of SND001 is currently continuing as part of Talisman’s recently commenced
maiden exploration drill program at the Sinclair Nickel Project.
• To date, eight RC pre-collars have been completed out of a planned total of 12 drill
holes. Each RC pre-collar hole is planned to have a diamond drill tail.
• This exploration drill program plans to drill test seven priority exploration targets at
three prospects within the Sinclair Nickel Project (see Appendix 1). These targets
were identified following a regional targeting exercise undertaken by ex-Jubilee
Mines nickel exploration geologists:
o
o
o
Delphi Prospect (3 targets);
Fly Bore Prospect (3 targets); and
Cody Well Prospect (1 target).
Talisman Mining Limited (ASX: TLM) is pleased to advise that the first diamond exploration drill-hole
currently underway at the Delphi North Prospect, located approximately 4km south of the Sinclair
nickel mine at its 100%-owned Sinclair Nickel Project in WA (see Appendix 1), has intersected
massive sulphides in multiple narrow intervals (see Table 2).
The priority target at Delphi North (see
Figures 1 & 2, plus Appendix 1)
comprises two refined historical downhole
electromagnetic
(DHEM)
anomalies, plus a newly identified
moving loop electromagnetic (MLEM)
anomaly identified from the recent
MLEM surface survey conducted by
Talisman.
Figure 1: Delphi Prospect interpretive plan showing
a close up of the Delphi North Prospect & SND001
Narrow massive nickel sulphide intersections from
historical drilling including 0.44 metres at 5.43% Ni
and 0.32 metres at 2.99% Ni are also located in the
vicinity.
Three drill holes are currently planned at this prospect.
The first diamond drill hole, SND001, which was
designed to intersect the new MLEM anomaly (see
Figure 2) has intersected a number of massive, matrix
and breccia sulphide horizons in a deformed sequence
of host ultramafic and basaltic rock units (see Table 2).
The main sulphide intersection within the hole is
represented by a total of 1.4 metres of massive,
matrix and breccia sulphides within a 2.2 metre
interval with narrow zones of strongly foliated basaltic
rocks from 396.9 metres – 399.1metres down-hole (true width not known at this time). The vertical
depth of this intersection is approximately 348 metres below surface.
Visual inspection of the drill core by experienced nickel sulphide geologists indicates that the
sulphides within this interval contain dominantly pyrrhotite with moderate amounts of pentlandite
and minor accessory pyrite and chalcopyrite, similar to the massive sulphides intersected
historically at the Sinclair nickel deposit.
The second zone of sulphide mineralisation comprises 0.5 metres of matrix-style sulphide
mineralisation between 419.5 metres – 420.0 metres down-hole within a broader zone of
disseminated, stringer and blebby sulphide mineralisation between 413.8 metres and 420.4
metres down-hole (true width not known at this time). The top of this intersection is approximately
367 metres vertically below surface.
Talisman is very encouraged by these intersections of massive, matrix and breccia-style sulphide
mineralisation in its maiden drill program at Delphi North which, together with the significant
historical intersections in the area, represents a mineralised horizon extending for more than
600 metres of interpreted strike length.
Figure 2: Interpretive longitudinal section of the Delphi Prospect (looking west) showing priority surface and down hole
geophysical EM anomalies and planned drilling. Also shown is historical drilling and significant mineralised intersections.
Drill core from SND001 will be cut, sampled and dispatched for laboratory analysis in order to
determine the nickel grades within the sulphide intersections.
Next Steps
On completion of SND001, the hole will be cased with PVC to facilitate a down-hole
electromagnetic (DHEM) survey.
At this stage, the DHEM survey of SND001 will be conducted at the completion of the current
exploration drill program, as part of a wider series of DHEM surveys across the exploration targets.
The survey of SND001 will be conducted with a view to providing target vectors towards potentially
thicker accumulations of massive nickel sulphides in the Delphi North area.
Two further drill holes are planned at Delphi North to test two historical DHEM plates.
These DHEM anomalies are located approximately 100 metres and 200 metres along strike to the
south from the intersection in SND001 (see Figure 2 – Delphi long section).
In total, the maiden exploration drilling program at Sinclair is planned to comprise 12 drill holes for
approximately 3,900 metres of reverse circulation (RC) pre-collars and diamond tails to provide an
initial test of seven exploration targets at three prospects (see ASX Announcement 30 September
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 is based on information compiled by Mr Graham
Leaver, who is a member of the Australasian Institute of Geoscientists. Mr Graham 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 appears.
Table 1 – Drill-hole Information Summary, Delphi North Prospect
Details and co-ordinates of all relevant drill-hole collars are provided in the table below:
Hole ID
Depth
Dip
Azimuth
Grid_ID
East
North
RL
Lease ID
Hole Status
SND001
429
-60°
270°
MGA94_51
290302
6856319
411
M37/1223
In Progress
Table 2 – Geological Information Summary, Delphi North Prospect
Down-hole Depth
From (metres)
Down-hole depth
To (metres)
Interval
(metres)
367.6
396.8
29.2
Basalt
396.92
397.14
0.22
Massive Sulphides
397.14
397.3
0.16
Basalt
397.3
397.5
0.2
Massive / Breccia Sulphides
397.5
397.71
0.21
Basalt
397.71
398.18
0.47
Massive / Breccia Sulphides
398.18
398.58
0.4
Basalt with Sulphide Stringers
398.58
399.09
0.51
Massive / Breccia Sulphides
399.09
408.44
9.35
Basalt
408.44
408.77
0.33
Ultramafic
408.77
411.5
2.73
Basalt
411.5
413.3
1.8
Ultramafic
413.3
413.8
0.5
Basalt
413.8
413.9
0.1
Basalt with Sulphide Stringers
413.9
414
0.1
Matrix / Breccia Sulphides
414
419.5
5.5
Ultramafic with Disseminated Sulphides
419.5
420
0.5
Matrix Sulphides
420
420.3
0.3
Sedimentary Black Shale with Breccia Sulphides
420.3
420.4
0.1
Matrix Sulphides
420.4
420.5
0.1
Ultramafic
Geology
Appendix 1 – Sinclair Nickel Project – Planned Exploration Target Locations
Appendix 2 – JORC Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria
Sampling
techniques
Drilling
techniques
Drill sample
recovery
JORC Code explanation
Commentary
• 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 techniques employed at the Sinclair project include saw cut
Diamond Drill core (DD) samples and Reverse Circulation (RC) rock
chip samples.
• Diamond core is NQ2 size and is sampled on geological intervals (0.2
m to 2 m); cut into half (NQ2) to give sample weights under 3kg. RC
drill samples were collected using a riffle splitter for each metre drilled.
• Semi-quantitative hand held XRF analysis of RC chips and diamond
core is carried out routinely to assist with geological logging and
identification of samples to submit for quantitative laboratory analysis.
No results from hand held XRF analysis are reported.
• Sampling is guided by Talisman Mining Ltd procedures and QAQC as
per industry standard.
• 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.).
• The current drilling program at Sinclair is being completed using both
Reverse Circulation (RC) and Diamond Drilling (DD) techniques as
appropriate.
• RC drilling techniques are being employed to provide both pre-collars
for diamond drill tails and to directly intersect drill targets dependant on
target depth and drilling conditions. RC drilling is conducted using face
sampling configurations with a nominal hole diameter of 140mm.
• The current surface Diamond Drilling (DD) on the Sinclair Project is
being completed with NQ2 diameter holes using conventional wireline
drilling techniques.
• All drill core is routinely orientated where possible at nominal 6m
intervals using a Reflex ACT core orientation system.
• 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.
• TLM diamond core and RC sample recoveries are logged and recorded
in a Datashed database. Historic core recoveries have been >95%.
• TLM Diamond core is reconstructed into continuous runs on an angle
iron cradle for orientation marking. Depths are checked against the
depth given on the core blocks and rod counts are routinely carried out
by the drillers.
• For RC drilling the volume of sample material collected is routinely
inspected and recorded on a metre by metre basis, and indicates
approximate sample recovery. Actual sample weights are routinely
recorded at the laboratory and stored in the database.
• No known relationship exists between sample recovery and grade and
no sample bias is known.
Criteria
Logging
Sub-sampling
techniques and
sample
preparation
Quality of
assay data and
laboratory tests
Verification of
sampling and
assaying
JORC Code explanation
Commentary
• 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.
• TLM 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.
• Logging is both qualitative and quantitative depending on the field being
logged.
• All drill holes are logged in full to end of hole.
• DD core is routinely photographed digitally.
• 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 subsampling 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.
• Diamond core is NQ2 size, sampled on geological intervals (0.2 m to 2
m) and sawn in half with an Almonte core saw to give sample weights
under 3kg.
Core orientation is completed where possible and
orientation lines guide sawing.
• RC drill samples are collected using a riffle splitter for each metre
drilled. Composite samples are taken on occasion via a second
sampling chute or spear sample. The majority of RC samples are dry.
• Samples will be submitted to ALS Chemex Laboratories for preparation.
The sample preparation follows industry best practice where all drill
samples are crushed and split to 1kg then dried, pulverized and (>85%)
sieved through 75 microns to produce a 1g charge for 4-acid digest with
an ICP-MS or AAS finish.
• Field duplicates are routinely taken for both DD core and RC chip
samples. Talisman procedures include a minimum of one duplicate per
33 samples.
• Sample size is considered appropriate for nickel mineralisation.
• 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.
• Drill samples are submitted to ALS Chemex Laboratories in Perth for
multi-element analysis using a 1g charge with a multi-acid digest and
ICP-MS or AAS finish (OG62). Analytes include Al, Fe, Mg, Mn, S, Ti,
Ag, As, Co, Cr, Cu, Ni, Pb, V, Zn, Zr.
• QAQC protocols for all drill sampling involved the use of Certified
Reference Material (CRM) as assay standards. The insertion ratio of
CRM standards was 1 in 33 with a minimum of two per batch. OREAS
and Geostats standards are selected on their grade range and
mineralogical properties.
• All drill 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 and reported
on a monthly, quarterly and annual basis. Historic results for all
standards and duplicates indicate most performing well within the two
standard deviation limit.
• Lab checks (repeats) occurred at a frequency of 1 in 25. These
alternate between both the pulp and crush stages.
• 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 significant drilling intersection assays are reported in this report.
• No twinned holes are being drilled as part of this program.
• Logging and sampling data is captured and imported using Maxwell
LogChief software.
• All drillhole, sampling and assay data is stored in a SQL server
(Datashed) database. Assay data is reviewed via DataShed, QAQCR
and other customised software and databases. Datashed software has
numerous validation checks which are completed at regular time
intervals.
• Primary assay data is always kept and is not replaced by any adjusted
or interpreted data.
Criteria
Location of
data points
Data spacing
and distribution
Orientation of
data in relation
to geological
structure
Sample
security
Audits or
reviews
JORC Code explanation
Commentary
• 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.
• Drillholes are located by hand held with an accuracy of +/-5m.
Downhole surveying is completed at regular 30m intervals using an
electronic single shot survey camera.
• For the Sinclair Project the Coordinate system used is the Australian
Geodetic Datum (AGD84). Coordinates are in the Australian Map Grid
(AMG84) Zone 51.
• 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.
• Exploration drill spacing is currently defined by geological and
geophysical target criteria and as such spacing and distribution is not
sufficient to support Mineral Resources or Ore Reserves.
• No sample compositing has been applied to these exploration results.
• Whether the orientation of sampling achieves
unbiased sampling of possible structures and
the extent to which this is known, considering
the deposit type.
• If the relationship between the drilling
orientation and the orientation of key
mineralised structures is considered to have
introduced a sampling bias, this should be
assessed and reported if material.
• The orientation of drilling is designed to intersect either geophysical
targets or geological targets at high angle in order to best represent
stratigraphy.
• No significant orientation based sampling bias is known at this time.
Drill holes may not necessarily be oriented perpendicular to intersected
stratigraphy or mineralisation. All reported intervals are down-hole
intervals, not true widths.
• The measures taken to ensure sample security.
• Samples are stored at the Sinclair Nickel Mine Site prior to submission
under the supervision of senior staff. Samples will be transported to
ALS Perth by an accredited transport service. The assay laboratory
receipts received samples against sample dispatch documents and
reconciles every sample batch.
• The results of any audits or reviews of sampling
techniques and data.
• No external audits of the sampling techniques or data have been
completed
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria
JORC Code explanation
Mineral
tenement and
land
tenure
status
• 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.
Exploration
done by other
parties
Geology
Drill hole
Information
Data
aggregation
methods
• Acknowledgment and appraisal of exploration
by other parties.
Deposit type, geological setting and style of
mineralisation.
Commentary
• The Sinclair Nickel Mine is located on tenement M37/1275.
• The Delphi Prospect area covers tenements M37/818 and M37/1223.
• The Cody Well prospect areas lie within tenement M37/816.
• The Fly Bore prospect occurs over tenements M36/444, M36/445,
M36/446 and M37/735.
• The Sinclair Nickel Project is held 100% by Talisman Nickel Pty Ltd, a
wholly owned subsidiary of Talisman Mining Ltd.
• The Sinclair Nickel Project was purchased from Xstrata Nickel
Australasia on 4 February 2015. A $2 million deferred payment will be
triggered should production recommence within six years of completion
of the settlement date.
• There are no known Native Title Claims over the Sinclair Nickel Project.
• All tenements are in good standing and there are no existing known
impediments to exploration or mining.
• M37/1275 hosts the Sinclair Nickel Mine which was operated by XNAO
from 2007-2013 and produced approximately 38,500 tonnes of
contained nickel metal.
• The Sinclair Nickel Deposit was discovered in 2005 by Jubilee Mines
NL drill testing a surface EM anomaly.
• Exploration work on the Sinclair project has included diamond, RC and
Aircore drilling, ground and down-hole EM surveys, soil sampling,
geological interpretation and other geophysics (magnetics, gravity).
• The Sinclair Project lies within the Archean-aged Norseman-Wiluna
Greenstone Belt.
• The Sinclair Nickel Deposit is an example of an Archaean-aged
komatiite-hosted nickel deposit, with massive nickel-iron sulphides
hosted at, or near the basal contact of high-MgO ultramafic lava
channels. The ultramafic host unit is underlain by footwall basaltic
rocks and overlain by sedimentary rocks.
• A summary of all information material to the
understanding of the exploration results
including a tabulation of the following
information for all Material drill holes:
• easting and northing of the drill hole collar
• elevation or RL (Reduced Level – elevation
above sea level in metres) of the drill hole collar
• dip and azimuth of the hole
• down hole length and interception depth
• hole length.
• If the exclusion of this information is justified on
the basis that the information is not Material
and this exclusion does not detract from the
understanding of the report, the Competent
Person should clearly explain why this is the
case.
• Refer to Table 1 of this document – Drillhole Information Summary,
Delphi North Prospect.
• In reporting Exploration Results, weighting
• No significant exploration results are included in this report.
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.
Criteria
JORC Code explanation
Relationship
between
mineralisation
widths
and
intercept
lengths
• These relationships are particularly important in
the reporting of Exploration Results.
Commentary
• All intersections reported represent down-hole width of mineralisation,
not true width.
• 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’).
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
• Other exploration data collected is not considered material to this
document. Other data collection will be reviewed and reported as
appropriate.
Further work
• The nature and scale of planned further work
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.
(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.
• TLM is conducting a campaign of targeted Reverse Circulation (RC)
and Diamond drilling (DD) to test exploration targets reported
previously.
• Down-hole electromagnetic (DHEM) geophysical surveys will be used
where appropriate to support the exploration drilling programme.
• Additional drilling and geophysical surveys in the future will be
dependent on the outcomes of current exploration activities.
Share your feedback
Discover