New Copper-Lead-Silver System delivers 296gt Silver result
Released
Released
Announcement PDF
First Pass Exploration Identifies a Copper/Lead/Silver System
with Rock Chips Assaying up to 296g/t Silver
Thali Prospect - Thailand
ASX Announcement
Tuesday 8 September 2015
Ref: /VMS/606/VMS0355
Venture Minerals Limited (ASX code: VMS), is pleased to announce that first pass exploration on the
recently granted Thali Prospect in northern Thailand (refer Figure One) has already delivered some
excellent, high grade results from initial rock chip sampling including:
Sample No
LOBJ 04
SOTL 02A
SOTL 04
SOTL 05
Copper (Cu)
0.3%
0.1%
0.1%
0.4%
Lead (Pb)
5.6%
0.4%
2.8%
6.6%
Silver (Ag)
157g/t
264g/t
232g/t
296g/t
(Refer to full table of results Appendix One)
The presence of significant lead grades and high silver grades suggests Thali may host a substantial
mineralized system potentially epithermal in nature. Initial reconnaissance work has identified
mineralization over 300m of strike (Refer Figure Two) however, on-going work will focus on extending the
known zone along strike.
Having only very recently received our first granted tenure in Thailand the Company is very pleased to
have already identified significant and high grade mineralization at surface from reconnaissance style
exploration.
Further detailed geological mapping and surface sampling will continue over the coming weeks, with
results expected shortly thereafter.
Venture Minerals Limited
PO BOX 8234 Subiaco East WA 6008
288 Churchill Avenue Subiaco WA 6008
Telephone: +61 8 9381 4222
Fax: +61 8 9381 4211
ACN 119 678 385
ABN 51 119 678 385
Figure One | Prospect location map - Thailand
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Figure Two | Thali Cu+Pb+Ag Prospect Mineralised Rock Samples Plan
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Image One | BJTL22 gossanous vein from Thali breccia zone with secondary copper minerals and relict
galena, assay pending.
Image Two | SOTL05 gossanous vein from Thali breccia zone with secondary copper minerals and relict
galena, assay 0.4% Cu, 6.6% Pb and 296g/t Ag.
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Thali Prospect - Geology
Exposure in the Thali prospect area is sparse and largely restricted to saprolite and saprock after felsic
volcanic rocks, tuffaceous sedimentary rocks and sericite-altered granitoid with stockworks of partly
oxidised sulphide and quartz veinlets. Reconnaissance prospecting has identified a north trending zone at
least 300 m long of gossanous quartz veins and breccias with boxworks of secondary minerals after iron
and base metal sulphides (Refer Figure Two). Regional scale geological mapping suggests the host volcanic
rocks are of Permian-Triassic age, and the granitic intrusions Triassic age; the Triassic granitoid suite is
widely associated with base and precious metal deposits within the Loei Belt.
Yours sincerely,
Hamish Halliday
Managing Director
The information in this report that relates to Exploration Results and Exploration Targets is based on information compiled by Mr Andrew
Radonjic, a full time employee of the company and who is a Member of The Australasian Institute of Mining and Metallurgy. Mr Andrew
Radonjic has sufficient experience which is relevant to the style of mineralisation and type of deposits under consideration and to the activity
which he is undertaking 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’. Mr Andrew Radonjic consents to the inclusion in the report of the matters based on his
information in the form and context in which it appears.
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Appendix One
Thali Prospect | Rock Chip Results
Sample No.
Meters East
UTM47WGS84
Metres North
UTM47WGS84
Cu
%
Pb
%
LOBJ004
749951
1949828
0.26%
SOTL02A
750021
1950036
SOTL04
749958
SOTL05
5.63%
Ag
g/t
157
Zn
%
0.04%
0.09%
0.41%
264
0.01%
1949930
0.09%
2.81%
232
0.08%
749949
1949905
0.41%
6.58%
296
0.07%
SOTL10
749954
1949752
0.04%
0.22%
54.9
0.02%
SOTL16
750215
1949903
0.04%
0.16%
38.3
<0.01%
TLIHC005
749960
1949926
0.04%
0.87%
75.9
0.05%
TLIHC006
749954
1949859
0.01%
0.54%
56.8
<0.01%
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Appendix Two
JORC Code, 2012 Edition | ‘Table 1’ Report
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections).
Criteria
JORC Code explanation
Commentary
Sampling techniques
Drilling techniques
Drill sample
recovery
Logging
Sub-sampling
techniques and
sample preparation
Quality of assay data
and laboratory tests
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.
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, facesampling bit or other type, whether core is oriented and if so, by
what method, etc..).
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.
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.
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.
Rock samples were collected from visibly mineralized
outcrop and sub-crop by Venture Minerals Ltd
geologists.
Each rock sample weighed between 1 and 3 kg and was
of sufficient size to be representative of the outcrop of
interest.
No drilling, not applicable
No drilling, not applicable
The rock samples were qualitatively logged and
described by a suitably qualified geologist.
The rock samples were dispatched to commercial assay
laboratories Mineral and Assay Services Co Ltd, Bangkok
(“MAS”) or ALS Global, Perth (“ALS”) for preparation and
assay.
Rock samples submitted to MAS were oven dried then
entirely crushed to 100 % passing 2 mm, then 500 g was
split off each sample and pulverized to nominally 90 %
passing 74 microns to produce the analytical pulps.
Rock samples submitted to ALS were each crushed 70%
passing 6 mm then entirely pulverized to nominally 80%
passing 75 microns to produce the analytical pulps.
No drilling so information regarding drill sampling not
applicable.
At MAS the analytical pulps were subjected to industry
standard four acid digest (perchloric, nitric, hydrofluoric
and hydrochloric) followed by Inductively Coupled
Plasma Emission Spectrometry (ICP-ES) finish to read
Cu, Ag, Pb and Zn. Samples with above 1% Pb were reassayed by sodium peroxide fusion followed by acid
digest and Atomic Absorption Spectrometry finish.
At ALS the analytical pulps were assayed by industry
standard four acid digest (perchloric, nitric, hydrofluoric
and hydrochloric) followed by ICP-ES finish to read Cu,
Ag, Pb and Zn.
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Criteria
JORC Code explanation
Commentary
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.
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.
Data spacing and
distribution
Orientation of data
in relation to
geological structure
Sample security
Audits or reviews
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 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 measures taken to ensure sample security.
The results of any audits or reviews of sampling techniques and
data.
The assay results agree well with the observed minerals
and weathering textures in the rock samples.
The use of twinned holes is not applicable at this stage
(no drilling).
Primary data is stored and documented in industry
standard ways.
The assay data is as reported by MAS or ALS and has not
been adjusted in any way.
Remnant assay pulps are held in storage by Venture
Minerals Ltd.
Rock sample locations were determined by handheld
Garmin GPS considered accurate to ±10 m and verified
by plotting on Thai government 1:50,000 topographic
maps.
All co-ordinates were recorded in UTM Zone 47N
datum WGS84.
Topographic control is provided by Thai government
1:50,000 topographic map sheets and a Digital Terrain
Model based on the 90 m Shuttle Radar Topographic
Mission data.
Only visibly mineralized rocks were sampled for assay
and sampling is of a reconnaissance nature. Sample
following an identified gossanous vein and breccia
trend, and was principally limited by available outcrop
and sub-crop.
The reported rock sampling data is in no way sufficient
to establish mineral resources.
Sample compositing has not been applied.
The reconnaissance rock sampling defines a North
trending zone of Cu-Pb-Ag mineralization.
No drilling, not applicable.
The chain of custody for all Venture samples from
collection to dispatch to MAS for assay is managed by
Venture personnel. Sample numbers are unique and do
not include any locational information useful to nonVenture personnel. The level of security is considered
appropriate for reconnaissance surface rock sampling.
The assay results agree well with the observed amount
of Cu and Pb minerals in the rock samples.
No further reviews have been carried out at this
reconnaissance stage.
Further surface sampling to verify these reconnaissance
results is proposed.
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Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section).
Criteria
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.
Exploration done by
other parties
Acknowledgment and appraisal of exploration by other parties.
Geology
Deposit type, geological setting and style of mineralisation.
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 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.
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.
The exploration targets are located within Special
Prospecting License 70/2558.
The exploration tenements are 100% held by Venture
Minerals Thailand Ltd, a wholly owned subsidiary of
Venture Minerals Ltd, and there are no encumbrances
or non-standard regulations.
The Special Prospecting Licences allow all industry
standard stages of mineral exploration, resource and
reserve definition.
Previous exploration work has included regional
stream sediment sampling and airborne magnetic
surveying by the Department of Mineral Resources of
Thailand. To Venture Minerals knowledge there has
been no previous local scale exploration of the target
area.
The exploration area is within the Loei Belt and
considered prospective for base and precious metal
skarn, porphyry and epithermal deposits. Nearby
deposits of this style include PanAust’s operating Phu
Kham and Ban Houayxai mines in Laos.
No drilling, not applicable.
No drilling, not applicable.
Data aggregation
methods
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Criteria
Explanation
Commentary
Relationship between
mineralisation widths
and intercept lengths
No drilling, not applicable.
An appropriate exploration plan is included in the
body of this release, including location of the
mineralized rock samples.
No drilling, so drill plans and sections are not
applicable.
Not applicable at this reconnaissance stage.
Diagrams
Balanced reporting
Other substantive
exploration data
Further work
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’).
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.
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.
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.
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.
Appropriate reconnaissance exploration plans are
included in the body of this release.
Venture proposes to conduct further prospecting and
geochemical sampling to refine the targets before drill
testing.
An appropriate exploration target plan is included in
the body of this release.
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