Monty - Exploration Update
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
Monty Exploration Update
th
15 October 2015
Thick zone of bornite-bearing massive sulphides
intersected in Lower Zone
COMPANY SNAPSHOT
Board of Directors
Highlights
Alan Senior
Non-Executive Chairman
Gary Lethridge
Managing Director
Brian Dawes
Non-Executive Director
Karen Gadsby
Non-Executive Director
Contact Details
Telephone:
+61 8 9380 4230
Facsimile:
+ 61 8 9382 8200
• Three horizons of massive sulphides intersected in step-out drill hole
TLDD0026, 45 metres along strike from recently reported hole TLDD0021 (7.3
metres of massive sulphides from 286.2m downhole), including a significant
intercept of:
o
19.9 metres of massive sulphides from 340.2m down-hole (true width
not known at this time, top of intercept is approximately 286m vertically
below surface).
• The primary mineralisation in TLDD0026 is similar to previous holes in the Lower
Zone but also contains variable amounts of bornite, a copper mineral which
has not previously been encountered by Sandfire in any significant quantities at
Doolgunna. Bornite typically has a copper content of ~63% by mass compared
with chalcopyrite‘s copper content of ~35% by mass.
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
Photo: Cross section through TLDD0026 NQ2 drill core showing bornite disseminated in
the matrix of the sulphides (359.3 metres down hole).
• High-grade copper assay results returned from Reverse Circulation (RC) drill
hole TLRC0009 located in the Upper Zone:
o
12 metres grading 5.7% Cu and 1.8 g/t Au from 133m to 145m downhole (true width not known at this time, but anticipated to be significantly
less than down-hole widths).
Sandfire is continuing drilling to define the extents of the mineralisation
identified to date in both the Upper and Lower zones at Monty and is also
targeting other prospective areas, both in the immediate vicinity of Monty and further
afield within the Springfield Project.
Monty Update
Talisman Mining Limited (ASX: TLM “Talisman”) is pleased to announce that Sandfire Resources NL (ASX:
SFR; “Sandfire”) has provided an update on ongoing activities at the Monty copper-gold discovery within
Talisman’s Springfield Project located approximately 10km east of the DeGrussa Copper-Gold Mine (see
Appendix 1).
The collar locations of advised holes drilled to date by Sandfire are shown in the plan view diagram below
(see Figure 1) and Table 1.
Figure 1: Plan view of Monty showing drill-hole collar locations and simplified interpreted geology.
Monty Lower Zone
Thick Zone (~20 metres) of massive sulphides intersected in Lower Zone
Diamond drill hole TLDD0026 was drilled approximately 45 metres along strike from recently reported hole
TLDD0021 (7.3 metres of massive sulphides from 286.2m down hole) (see TLM ASX announcement - 2
October 2015) and approximately 46 metres up-dip of the halo mineralisation intersected in TLDD0014 (see
Figures 1 and 2).
Sandfire have advised that TLDD0026 intersected three horizons of massive sulphides within the host
sequence of the Lower Zone:
•
3.0 metres of massive sulphides from 325.6m to 328.6m down-hole
(true width not known at this time, top of intercept is approximately 275m vertically below surface);
•
2.4 metres of massive sulphides from 330.5m to 332.9m down-hole
(true width not known at this time, top of intercept is approximately 279m vertically below surface); and
•
19.9 metres of massive sulphides from 340.2 to 360.1m down-hole
(true width not known at this time, top of intercept is approximately 286m vertically below surface)
Monty Update
Geological Discussion of the Lower Zone and TLDD0026
Ongoing work at Monty has provided sufficient detail to enable Sandfire to provide an updated interpretation of
the geological setting of the known mineralisation at Monty. An updated vertical longitudinal projection (looking
to the south-east) is shown in Figure 2.
The Lower Zone at Monty incorporates the massive sulphide mineralisation intersected in TLDD0004A,
TLDD0005, TLDD0009, TLDD0010 (previously reported), TLDD0021 (previously reported, assays pending) and
TLDD0026 (reported above, assays pending).
Figure 2: Vertical longitudinal projection of Monty showing drill-hole piercepoints at the top of the primary intercept
shown in bold. All intercepts are down-hole widths.
The 19.9 metre intersection of massive sulphides in TLDD0026 is interpreted by Sandfire to be a continuation of
the 7.3m (down-hole width) primary mineralisation previously reported from TLDD0021 (see TLM ASX
announcement - 2 October 2015) (see Figure 2 above and Appendix 3). The mineralisation in the upper two
intersections in TLDD0026 appears to be consistent with that of the higher level, subordinate mineralisation
zones intersected in TLDD0021 (see Appendix 3).
Based on field observations by Sandfire, the mineralogy of the 19.9 metre intercept in TLDD0026 differs from
that observed in the previously reported intersections of the primary mineralisation in TLDD0004A, TLDD0005,
TLDD0009, TLDD0010, and TLDD0021.
The massive sulphides intersected in these earlier holes comprises variable amounts of chalcopyrite (main
copper-bearing sulphide mineral), pyrite and pyrrhotite, minor sphalerite and galena, along with silicate and talc
gangue minerals (with gold and silver).
Monty Update
The primary mineralisation in TLDD0026 has a similar composition to that of the earlier holes, but also contains
variable amounts of bornite (a copper-bearing sulphide). Photos of the drill core from the mineralised
intervals in TLDD0026 are provided in Appendix 2 to this release.
Bornite is an important copper mineral and commonly occurs in VMS deposits globally, along with the more
common copper mineral; chalcopyrite. Bornite, in isolation, typically has a copper content of approximately 63
per cent by mass compared with chalcopyrite‘s typical copper content of ~35% by mass.
Both the bornite and other sulphide minerals are deformed and exhibit features consistent with re-crystallisation,
which suggests that modification of the massive sulphide may have occurred during deformation.
Photo: TLDD0026 NQ2 drill core showing bornite in foliation (right) and rimming pyrite and pyrrhotite (left) – intercept
shown is from 351m down-hole.
Talisman understands that Bornite has not previously been seen at the DeGrussa mine to any material extent.
This potentially significant sighting of Bornite mineralisation at Monty will require additional work to put its
presence in TLDD0026 into context and determine its significance in the exploration campaign at Monty and
further afield at Springfield, but is considered by Talisman to be highly encouraging at this stage.
Diamond core from TLDD0026 will be despatched by Sandfire for analysis.
Additional Recent Lower Zone Drilling Results
Sandfire have also advised Talisman of the results from two other diamond drill holes targeting the Lower Zone
at Monty; TLDD0024 and TLDD0028.
TLDD0024 was drilled approximately 66 metres down-dip of previously reported hole TLDD0010 (intercepts
including 10.5m grading 18.9%Cu and 3.1 g/t Au from 359.7m down hole and 4.7m grading 12.8%Cu
and 2.5 g/t Au from 373.6m down hole ) (see TLM ASX announcement - 8 September 2015) (see Figures 1
and 2).
Sandfire have advised that TLDD0024 intersected a single horizon of 1.8 metres of massive sulphides
within the host sequence of the Lower Zone from 445.6m to 447.3m down-hole (true width not known at this
time, top of intercept is approximately 381m vertically below surface). Assays are awaited.
TLDD0028 was drilled approximately 37 metres along strike to the south-west from previously reported hole
TLDD0021 (7.3 metres of massive sulphides from 363.1m down-hole) (see TLM ASX announcement – 2
October 2015) and 46 metres from the mineralisation intersected in TLDD0020 (1.2 metres of massive
sulphides from 272.6m down-hole), (see Figures 1 and 2).
Monty Update
TLDD0028 intersected the prospective horizon with weak haematite, jasper and minor disseminated sulphides
logged in the core. No massive sulphides were encountered and Sandfire have advised that further drilling will
be undertaken down-dip to help define the extents of the mineralisation in this area.
Recent Lower Zone Assay Results
Sandfire have also advised that it has received assay results from the previously reported Diamond drill holes
TLDD0014 and TLDD0011 (see Figure 1, Figure 2 and Table 1)
TLDD0014 was located 45 metres along strike of TLDD0026 (see Figures 1 and 2) and intersected:
•
0.5 metres grading 3.6% Cu and 0.1g/t Au from 334.2m to 334.7m down-hole
(corresponding to the stratigraphic position of the main mineralised zone); and
•
3.4 metres grading 3.5% Cu and 0.8g/t Au from 359.4m to 362.8m down-hole
(true widths for both intersections not known at this time).
TLDD0011 was drilled along strike of TLDD0010 (see Figures 1 and 2) and returned an intersection of:
•
0.4 metres grading 1.2% Cu and 1.3g/t Au from 370.9m to 371.3m down-hole
(true width not known at this time).
Monty Upper Zone
Upper Zone Drilling Results and Geological Discussion / Interpretation
Sandfire have advised that reverse circulation drill holes TLRC0015, TLRC0016 and TLRC0017 were drilled updip of, and at the opposite orientation to, previously reported holes TLRC0004, TLRC0008 and TLRC0009 to test
for potential mineralisation (see Figures 1 and 2).
No visible mineralisation was observed by Sandfire and the mineralised zone is therefore interpreted by Sandfire
to not extend to the surface (see Figure 2).
Sandfire advise that the spatial position of the host horizon intersected in TLRC0016 and TLRC0017 indicates at
this time that the host horizon in the near-surface portion of the Upper Zone may be locally overturned and dip at
approximately 75° to the south-east.
As the earlier drill-holes that intersected mineralisation in the Upper Zone (TLRC0004, TLRC0008 and
TLRC0009) were drilled at a dip of 60 - 62° to the south-east, as previously reported the true widths of
mineralisation in these holes is anticipated to be significantly lower than the down-hole widths.
Additional diamond holes are planned by Sandfire to be drilled below TLRC0004, TLRC0008 and TLRC0009 in
order to test for down-dip mineralisation as well as to provide information to accurately constrain the dip of the
Upper Zone.
Monty Update
Assay Results Upper Zone
Sandfire have also advised that it has received assay results from the previously reported reverse circulation
drill hole TLRC0009 (see Figures 1 and 2 and Tables 1 and 2).
TLRC0009 intersected mineralisation approximately 40 metres along strike to the north-east of TLRC004 (see
Figures 1 and 2) and returned an intersection of:
•
12.0 metres grading 5.7% Cu and 1.8g/t Au from 133m to 145m down-hole
(true width not known at this time, but anticipated to be significantly less than down-hole widths).
Further Exploration Activity
Sandfire is continuing drilling at Monty, in both the Lower and Upper Zones, to define of the extents of the
currently known mineralisation and to provide information on the overall orientation and extents of this
mineralisation.
In addition to continuing definition drilling around the currently known mineralisation, Sandfire is also beginning
to step further afield, with the objective of finding the next lenses or clusters of lenses of VMS mineralisation,
both at Monty and also within the broader Springfield Project.
The Springfield Project is subject to an exploration farm-in joint venture between Sandfire and Talisman where
Sandfire has the right to earn up to a 70% interest in Talisman’s Doolgunna Projects by the expenditure of $15
million on exploration at the Projects.
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 Person’s Statement
Information in this ASX release that relates to Exploration Results is based on informati on 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 appears.
Monty Update
Table 1 – Drill-hole Information Summary, Monty 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
TLDD0002A
463
-61°
110°
MGA94_50
743544
7171211
602
E52/2282
Complete
TLDD0004A
817
-60°
148°
MGA94_50
743588
7171281
601
E52/2282
Complete
TLDD0005
478
-62°
139°
MGA94_50
743544
7171210
602
E52/2282
Complete
TLDD0006
554
-62°
140°
MGA94_50
743469
7171174
601
E52/2282
Complete
TLDD0007
589
-62°
138°
MGA94_50
743504
7171271
601
E52/2282
Complete
TLDD0008
688
-62°
138°
MGA94_50
743441
7171223
600
E52/2282
Complete
TLDD0009
472
-61°
140°
MGA94_50
743578
7171190
602
E52/2282
Complete
TLDD0010
433
-62°
142°
MGA94_50
743514
7171138
601
E52/2282
Complete
TLDD0011
472
-62°
141°
MGA94_50
743451
7171092
598
E52/2282
Complete
TLDD0012
598
-62°
140°
MGA94_50
743403
7171155
599
E52/2282
Complete
TLDD0014
399
-62°
143°
MGA94_50
743638
7171231
603
E52/2282
Complete
TLDD0015
376
-62°
146°
MGA94_50
743561
7171073
602
E52/2282
Complete
TLDD0016
274
-61°
147°
MGA94_50
743621
7171119
604
E52/2282
Complete
TLDD0017
236
-62°
146°
MGA94_50
743686
7171166
605
E52/2282
Complete
TLDD0018
340
-62°
146°
MGA94_50
743471
7171054
599
E52/2282
Complete
TLDD0019
552
-62°
141°
MGA94_50
743566
7171329
600
E52/2282
Complete
TLDD0020
340
-61°
141°
MGA94_50
743536
7171106
602
E52/2282
Complete
TLDD0021
331
-62°
144°
MGA94_50
743599
7171152
603
E52/2282
Complete
TLDD0022
304
-62°
141°
MGA94_50
743441
7171035
599
E52/2282
Complete
TLDD0024
571
-60°
141°
MGA94_50
743470
7171172
600
E52/2282
Complete
TLDD0026
409
-59°
141°
MGA94_50
743609
7171209
602
E52/2282
Complete
TLDD0028
441
-62°
143°
MGA94_50
743569
7171129
602
E52/2282
Complete
TLRC0003
544
-61°
144°
MGA94_50
743720
7171393
599
E52/2282
Complete
TLRC0004
306
-62°
142°
MGA94_50
743497
7171025
600
E52/2282
Complete
TLRC0006
318
-62°
143°
MGA94_50
743430
7170973
598
E52/2282
Complete
TLRC0008
294
-62°
143°
MGA94_50
743461
7171001
599
E52/2282
Complete
TLRC0009
265
-62°
141°
MGA94_50
743527
7171050
601
E52/2282
Complete
TLRC0012
210
-62°
143°
MGA94_50
743553
7171017
602
E52/2282
Complete
TLRC0015
138
-60°
320°
MGA94_50
743503
7170953
600
E52/2282
Complete
TLRC0016
120
-58°
317°
MGA94_50
743580
7170985
602
E52/2282
Complete
TLRC0017
120
-60°
318°
MGA94_50
743548
7170968
601
E52/2282
Complete
Monty Update
Table 2 – Significant Drill-hole Assay Intersections, Springfield Project
Details of all relevant intersections are provided below:
Hole ID
TLDD0004A
TLDD0005
TLDD0009
TLDD0010
TLRC0004
TLRC0008
TLRC0009
Int
1
2
3
1
2
3
1
2
1
2
Intersection
From
To
Downhole
Width
Cu (%)
Au (g/t)
Zn (%)
409.5
417.0
343.0
363.1
385.8
355.6
359.7
373.6
107.0
158.0
89.0
112.0
133.0
426.0
426.2
344.0
371.0
390.6
356.1
370.2
378.2
125.0
162.0
95.0
123.0
145.0
16.5
9.2
1.0
7.9
4.8
0.5
10.5
4.7
18.0
4.0
6.0
11.0
12.0
18.9
11.8
8.6
8.3
4.9
1.2
18.9
12.8
5.7
4.2
7.8
15.0
5.7
2.1
2.9
0.3
2.4
1.1
1.4
3.1
2.5
2.4
0.7
0.9
1.9
1.8
1.5
2.3
0.1
2.1
1.4
0.2
1.1
0.8
3.2
0.1
0.9
1.0
2.2
Appendix 1: Talisman’s Doolgunna Copper-Gold Projects subject to the $15M Exploration Farm-In Joint Venture with Sandfire
Resources NL
Monty Update
[
Appendix 2: TLDD0026 Core Tray Pictures
Monty Update
Appendix 3 – Interpretive cross-section of the Monty mineralisation (Lower Zone)
Monty Update
Appendix 4 - 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.
•
• 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, face-sampling bit or other type,
whether core is oriented and if so, by
what method, etc).
•
Sandfire diamond drilling is completed using
NQ2 size coring equipment.
•
RC drilling is with a face sampling hammer of a
nominal 140mm hole diameter.
•
•
All drill collars are surveyed using RTK GPS.
All core, where possible is oriented using a
Reflex ACT II RD orientation tool.
Downhole surveying is undertaken using a
gyroscopic survey instrument.
Drilling
techniques
•
•
•
•
•
•
•
•
The sampling method employed by Sandfire i s
h a l f -core sampling of NQ2 core from
diamond drilling (DD)
Sandfire collect RC samples by cone splitter for
single metre samples or a sampling spear for first
pass composite samples using a face sampling
hammer with a nominal hole diameter of 140mm
Sampling is guided by Sandfire protocols as per
industry standard.
Diamond drill core sample size reduction is
through a Jaques jaw crusher to -10mm and a
second stage reduction via Boyd crusher to 4mm.Representitive sub samples are split and
pulverised via an LM5 mill.
RC samples are crushed to -4mm through a
Boyd crusher and representative sub samples
are split and pulverised with an LM5 mill.
Pulverising is to nominal 90% passing -75µm and
is checked using wet sieving technique.
Samples are assayed using Mixed 4 Acid
Digest (MAD) 0.3g charge and MAD Hotbox
0.15g charge methods with ICPOES or ICPMS.
Fire Assay is completed by firing 40g portion of
the sample with ICPMS finish.
Monty Update
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.
•
•
•
•
•
Logging
Subsampling
techniques
and sample
preparation
• Whether core and chip samples have
been geologically and geotechnically
logged to a level of detail to support
appropriate Mineral Resource
estimation, mining studies and
metallurgical studies.
• Whether logging is qualitative or
quantitative in nature. Core (or
costean, channel, etc) photography.
• The total length and percentage of the
relevant intersections logged.
• If core, whether cut or sawn and
whether quarter, half or all core taken.
• 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 recovery is logged and
captured into the database. Core recoveries are
measured by drillers for every drill run. The core
length recovered is physically measured for each
run and recorded and used to calculate the core
recovery as a percentage of core recovered.
Appropriate measures are taken to maximise
sample recovery and ensure the representative
nature of the samples. This includes diamond core
being reconstructed into continuous intervals on
angle iron racks for orientation, metre marking and
reconciled against core block markers.
RC sample recovery is good with almost no wet
sampling in the project area
Samples are routinely weighed and the information
captured into the central secured database.
No sample recovery issues have impacted on
potential sample bias
Sandfire Geological logging is completed for all
holes and is representative across the orebody.
The lithology, alteration and structural
characteristics of core are logged directly to a
digital format following procedures, and using
Sandfire NL geologic codes. Data is imported into
Sandfire NL’s central database after validation in
LogChief™.
Logging is both qualitative and quantitative
depending on field being logged.
All cores are photographed.
All drill holes are fully logged.
Sandfire complete diamond core orientation
where possible and all core is marked prior to
sampling. Half core samples are produced using
an Almonte Core Saw. Samples are weighed and
recorded.
RC samples are split using a cone or riffle splitter.
The majority of samples collected are dry. On
occasion that wet samples are encountered they
are dried prior to splitting with a riffle splitter.
All samples are sorted, dried at 80° for up to 24
hours and weighed. Samples are then crushed
through a Jaques crusher to nominal -10mm. A
second stage crushing is through a Boyd crusher
to nominal -4mm.
Sample splits are weighed at a frequency of 1:20
and entered into the job results file. Pulverising is
completed using LM5 mill to 90% passing 75%µm
using wet sieving technique.
1:20 grind quality checks are completed for 90%
passing
75%µm
criteria
to
ensure
representativeness of sub-samples.
Monty Update
•
Subsampling
techniques
and sample
preparation
(Continued)
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.
•
•
•
•
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.
•
•
•
•
Sampling is carried out in accordance with
Sandfire protocols as per industry best practice.
No field duplicates have been taken.
The sample sizes are considered appropriate for
VHMS and Gold mineralisation types.
Samples 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 analysis
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.
The analytical methods are considered
appropriate for this mineralisation styles.
No geophysical tools are used in the analysis.
Sandfire DeGrussa QAQC protocol is considered
industry standard with standard reference
material (SRM) submitted on regular basis with
routine samples. SRMs and blanks are inserted
at a minimum of 5% frequency rate.
Significant intersections have been verified by
alternate Sandfire personnel.
None of the drillholes in this report are twinned.
Primary data is captured on field Toughbook
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.
Monty Update
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.
•
•
•
•
•
The Sandfire Survey team undertakes survey
works under the guidelines of best industry
practice.
All drill collars are accurately surveyed using
RTK GPS system within +/-50mm of accuracy (X,
Y, Z).
Downhole surveys are completed by gyroscopic
downhole methods at regular intervals.
Coordinate and azimuth are reported in MGA 94
Zone 50.
Topographic control was established from LiDar
laser imagery technology
• 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.
•
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.
•
Sample
security
• The measures taken to ensure sample
security.
•
Sandfire ensures appropriate security measures
are taken to dispatch samples to the laboratory.
Chain of custody of samples is being managed
by Sandfire Resources NL. Samples are stored
onsite and transported to laboratory by a licence
transport company in sealed bulka bags. The
laboratory receipts 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.
•
Sandfire have not completed any external audits
or reviews of the sampling techniques and data
Data
spacing
and
distribution
•
•
•
Drill spacing is currently defined by geological
criteria and is regarded as appropriate to
determine the extents of mineralisation. This
spacing is nominally 80m x 80m. Spacing is
shown by the accompanying tables and figures.
Some holes are drilled at a closer spacing to
determine the edges of mineralisation.
Exploration drilling at Monty is preliminary and
spacing and distribution of exploration results is
not sufficient to support Mineral Resources or
Ore Reserves.
No sample compositing has been applied to
these exploration results.
No significant orientation based sampling bias is
known at this time.
The drill holes may not necessarily be
perpendicular to the orientation of the intersected
mineralisation. All reported intervals are
downhole intervals, not true widths. This will be
established with additional drilling.
Monty Update
Section 2 Reporting of Exploration Results
(Criteria in this section apply to all succeeding sections)
Criteria
JORC Code explanation
Commentary
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.
• Diamond and RC drilling by Farm-in Partner
Sandfire is on tenements E52/2313 and
E52/2282. Tenements E52/2282, E52/2313 and
E52/2466 form Talisman’s 100% owned
Springfield Project, 150km north-east of
Meekatharra, WA. Sandfire is currently farming
into the project on a staged basis with the right to
earn 70% interest in the project
•
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