High-Grade Tungsten Discovery 20km North of Tallebung
Released
Released
Announcement PDF
ASX: SKY
ASX ANNOUNCEMENT
8 September 2026
SKY METALS LIMITED
+61 2 6360 1587 2 HAWTHORN PLACE, ORANGE NSW 2800 WWW.SKYMETALS.COM.AU ABN 46 098 952 035
HIGH-GRADE TUNGSTEN DISCOVERY 20 KILOMETRES NORTH OF
TALLEBUNG TIN-TUNGSTEN-SILVER PROJECT
• Exceptional high-grade tungsten results returned from new surface sampling at the 100%
owned Theirman Mines Prospect, confirming an exceptional drill-ready target just 20km from
the Tallebung Tin-Tungsten-Silver Project. Significant results include:
AH20260709-05: 7.44% WO3 and 0.09g/t Au
AH20260709-06: 2.01% WO3 and 0.05g/t Au
• Recent results validate multiple historical high-grade rock chip samples of up to 4.92% WO₃,
4.33% WO₃, 2.59% WO₃, 2.11% WO₃ and 2.08% WO3 together with 0.83% Sn, 3.71g/t Au, 10.9g/t
Ag and 0.32% Bi, highlighting the presence of a potential significant mineralised system.
• Over 500m of prospective strike defined across at least two mineralised trends associated
with historical workings and open in all directions.
• Compelling new drill target rapidly being advanced to drill-testing, with drilling expected to
commence in the coming weeks.
• Strategically located just 20km from the Tallebung Project, enabling low-cost and rapid drill
evaluation using existing exploration personnel, contractors and infrastructure.
SKY Managing Director & CEO Oliver Davies commented: “These outstanding results highlight the significant
potential to grow the Tallebung Project through successful exploration across the broader Tallebung district. The
high grades of Tungsten returned from both recent and previous sampling elevates the Theirman Mines Prospect
as a drill-ready target with potential for a substantial tungsten-rich mineralised system only 20km north of
Tallebung.
“With a diamond drilling program nearing completion at Tallebung and an RC drilling campaign already scheduled
to further expand and upgrade the Tallebung Resource, we are in a unique position to rapidly test this highly
prospective target. The proximity of the Theirman Mines prospect to Tallebung provides significant operational
advantages and reinforces our view that SKY is in an excellent position to explore a highly endowed tin-tungsten
district with multiple opportunities for discovery and resource growth – all leveraged to the advanced Tallebung
Project, which is quickly progressing through the mining approvals phase towards near-term development.”
Sky Metals Limited (ASX: SKY) (“Sky Metals” or the “Company”) is pleased to advise that it has confirmed a high-
grade tungsten-tin-gold-silver-bismuth discovery in recent surface sampling of the Theirman Mines Prospect at
its 100%-owned Tallebung Tin-Silver-Tungsten Project in NSW.
TALLEBUNG PROJECT (EL 6699, SKY 100%)
HIGH-GRADE TUNGSTEN RESULTS CONFIRM SIGNIFICANT MINERAL SYSTEM AT THEIRMAN MINES PROSPECT
Recent rock chip sampling at the Theirman Mines Prospect has confirmed the presence of high-grade tungsten
mineralisation associated with a broader tin-tungsten-gold-silver-bismuth system located just 20km north of the
advanced Tallebung Tin-Tungsten-Silver Project.
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Figure 1: Theirman Mines Tungsten results over local geology map with rock chip locations labelled with high-grade WO₃ results. LHS Insert: Location of the
Theirman Mines Prospect to the advanced Tallebung Tin-Tungsten-Silver Project.
3
The latest results include assays of up to 7.44% WO₃ and 0.09g/t Au, and 2.01% WO₃ and 0.05g/t Au, representing
some of the highest tungsten grades identified within SKY's regional landholding and providing strong validation
of the prospect's exploration potential.
Importantly, these results closely replicate historical high-grade surface sampling completed by YTC Resources
in 2010, which returned numerous tungsten-rich rock chip samples including 4.92% WO₃, 4.33% WO₃, 2.59% WO₃,
2.11% WO₃ and 2.08% WO₃, together with elevated gold, silver, tin and bismuth values. The consistency between
the historical and recent sampling programs significantly increases confidence that the mineralisation is extensive
and persistent across the wider prospect area (Figure 1 & Table 1).
MULTIPLE MINERALISED TRENDS DEFINED
Compilation of recent and historical exploration data indicates that the mineralisation occurs over a strike length
exceeding 500 metres and is associated with multiple historical workings developed on two principal mineralised
trends.
The prospect area incorporates the historical Theirman Tin Mine and Whytes Wolfram Mine workings, where
mining activity dates back to the late 1800s. Historical records indicate small-scale production of both tin and
tungsten concentrates, demonstrating that the mineralisation identified by modern exploration has a proven
history of economic grades and processing using low-cost gravity methods as demonstrated also at Tallebung.
At the westernmost trend, historically known as the Whytes Wolfram Mine, mapping has documented a
mineralised corridor extending over a strike length of approximately 600m and comprising multiple quartz-
wolframite veins developed within a zone up to 40m wide. Individual veins were reported to reach true widths of
up to 2m and remain open beneath shallow cover along strike.
Similarly, the easternmost trend or the Theirman Mine area hosts a series of quartz veins developed over
approximately 500m of strike within a 30m-wide structural corridor, with individual veins reported to reach widths
of up to 5m. The continuity of mineralised veining exposed at surface suggests the potential for a substantial
mineralised system extending beneath the shallow historical workings.
GEOLOGICAL MODEL SUPPORTS FURTHER DISCOVERY POTENTIAL
The mineralisation is hosted within tightly folded Ordovician metasedimentary rocks of the Tallebung Group, the
same regional geological package that hosts the Tallebung Tin-Tungsten-Silver Project.
Past geological studies have identified a strong association between tungsten, gold, bismuth, arsenic and copper
at the prospect. This geochemical assemblage is interpreted to be consistent with an intrusion-related mineral
system potentially associated with a concealed granitic intrusion at depth. Past workers noted evidence of thermal
alteration and hornfels development within the surrounding metasedimentary rocks, while magnetic
interpretations identified features that may represent buried granitic stocks capable of driving the high-grade
mineralisation observed at surface.
This geological setting is considered highly prospective as intrusion-related tin and tungsten deposits globally are
commonly associated with extensive mineralised vein systems and can exhibit significant continuity at depth and
along strike.
NEAR-TERM DRILL TESTING PLANNED
The recent sampling program has successfully validated past exploration results and rapidly elevated the
Theirman Mines Prospect to a drill-ready target.
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The prospect is strategically located within trucking distance of SKY's development activities at Tallebung and
can be efficiently assessed using existing exploration personnel, contractors and logistical support already
mobilised within the tenement.
With the current Tallebung diamond drilling program nearing completion and a regional RC drilling campaign
scheduled to commence in the coming weeks, SKY intends to undertake initial drill testing of the Theirman Mines
mineralised system in the near term.
The ability to rapidly evaluate the prospect significantly reduces exploration lead times and costs while providing
exposure to a potentially significant new tungsten discovery within the broader Tallebung district.
The results further reinforce SKY's view that the Tallebung region represents an emerging tin-tungsten province
with multiple opportunities for resource growth and new discoveries capable of complementing the ongoing
development of SKY’s rapidly advancing flagship Tallebung Project.
This announcement is authorised for release by the Board of Sky Metals Limited.
Investors:
Oliver Davies – Managing Director & CEO
+61 (0) 430 359 547
Media:
Nicholas Read – Read Corporate
+61 (0) 419 929 046
JOIN SKY METALS’ INTERACTIVE INVESTOR HUB
Visit skymetals.com.au to interact with Sky Metals’ announcements and updates
To watch a video summary of this announcement & engage with SKY click here
About the Tallebung Tin-Tungsten-Silver Project (100% SKY)
Tallebung is an advanced tin-tungsten-silver development project in central western New South Wales. A
recently completed Pre-Feasibility Study outlined robust, high-margin economics, low development capital
requirements and a pathway to first production in 2028, while utilising only part of the current Mineral Resource.
Ongoing drilling continues to expand the deposit and identify new high-grade tin, tungsten and silver zones
beyond the current resource.
Bulk sampling and pilot-scale metallurgical testwork have successfully demonstrated a low-cost processing
pathway combining ore sorting and conventional gravity recovery, reinforcing Tallebung's potential to become
a significant new Australian producer of tin, tungsten and silver and an important future supplier of critical
minerals to global technology, electrification and defence markets.
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Competent Persons Statement
The information in this report that relates to Exploration Results is based on information compiled by Mr. Oliver
Davies, who is a Member of the Australasian Institute of Geoscientists. Mr. Oliver Davies is an employee and
director of Sky Metals Ltd and has sufficient experience which is relevant to the style of mineralisation and type
of deposit 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. Davies consents to the inclusion in this report of the matters based on his information in the
form and context in which it appears.
Previously Reported Information
The information in this report that references previously reported exploration results is extracted from the
Company’s ASX market announcements released on the date noted in the body of the text where that reference
appears. The previous market announcements are available to view on the Company's website or on the ASX
website (www.asx.com.au). The Company confirms that it is not aware of any new information or data that
materially affects the information included in the original market announcements. The Company confirms that the
form and context in which the Competent Person’s findings are presented have not been materially modified from
the original market announcements.
Disclaimer
This report contains certain forward-looking statements and forecasts, including possible or assumed reserves
and resources, production levels and rates, costs, prices, future performance or potential growth of Sky Metals
Ltd, industry growth or other trend projections. Such statements are not a guarantee of future performance and
involve unknown risks and uncertainties, as well as other factors which are beyond the control of Sky Metals Ltd.
Actual results and developments may differ materially from those expressed or implied by these forward-looking
statements depending on a variety of factors. Nothing in this report should be construed as either an offer to sell
or a solicitation of an offer to buy or sell securities.
This document has been prepared in accordance with the requirements of Australian securities laws, which may
differ from the requirements of United States and other country securities laws. Unless otherwise indicated, all
ore reserve and mineral resource estimates included or incorporated by reference in this document have been,
and will be, prepared in accordance with the JORC classification system of the Australasian Institute of Mining,
and Metallurgy and Australian Institute of Geoscientists.
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Table 1: Theirman Mines Rock Chip Results (MGA94 Zone 55). For where abbreviations are used: Feox = Iron Oxides, Mnox = Manganese Oxides, qtz = quartz, vn =
vein, sdst = sandstone, hfels = hornfels & W = Wolframite
Sample ID
Easting Northing RL (m)
Rock Type Comment
WO3 Sn Au Ag Bi
mE (MGA)
mN
(MGA)
m % % g/t g/t %
IC101106-01 450672 6396697 346 boxwork gossan and vein quartz most SW shaft 0.70 - 0.17 - 0.32
IC101106-02 450672 6396697 346 wolframite bearing vein quartz most SW shaft 2.11 - 0.04 - 0.05
IC101106-03 450672 6396697 346
brecciated vein quartz and
psammopelite; gossanous in part
most SW shaft 2.59 - 0.16 - 0.08
IC101106-04 450772 6396796 356
vein quartz + Feox + muscovite +
wolframite
0.74 - 0.23 2.8 0.06
IC101106-05 450772 6396796 356 vein quartz and boxwork gossan 0.77 - - 5.4 0.16
IC101106-06 450778 6396824 357 vein quartz + Feox + Mnox main open pit 4.92 - - - 0.03
IC101106-07 450778 6396824 357
altered psammopelite with Mnox +
Feox + scorodite
main open pit 0.24 - 0.07 - -
IC101106-08 450874 6396930 346 vein quartz and boxwork gossan NE end of 40m line of pits 0.49 - - 5.9 0.04
IC101106-09 450843 6396923 350
vein quartz + Feox + wolframite +
chalcopyrite + pyrrhotite
SW end of 40m line of pits 0.89 - 0.06 3.4 -
IC101106-10 450843 6396923 350 vein quartz + Feox SW end of 40m line of pits 0.23 - 0.16 - 0.06
IC101106-11 450764 6396837 356 vein quartz and boxwork gossan 1mx3mx3m prospecting pit 0.26 - 0.03 2.9 0.12
IC101106-12 450749 6396781 348 vein quartz + Feox + wolframite 4mx2mx1m prospecting pit 2.08 - - - -
IC101106-13 451001 6396763 360 stockwork vein quartz + Feox 0.03 - - - -
IC101106-14 450889 6396685 345 vein quartz + Feox 1m wide vein 0.06 - - - -
IC101106-15 450837 6396890 350 vein quartz + Feox 0.03 - - - -
IC101106-16 450903 6396992 340 vein quartz + Feox + muscovite 6mx2mx2m prospecting pit 0.11 - 0.04 - -
IC101106-17 450903 6396992 340
vein quartz + Feox + muscovite +
boxworks
6mx2mx2m prospecting pit 0.17 - 0.05 - 0.04
IC101106-18 450942 6397017 336 vein quartz + Feox most NE exposure 4.33 - - - 0.06
IC101106-19 451019 6396528 349 stockwork vein quartz + Feox 10m thick psammite band - - - - -
IC101106-20 451459 6396690 341 grey vein quartz + Feox 15m deep shaft - - 0.02 - -
IC101106-21 451459 6396690 341 ferruginous phyllite / pelite 15m deep shaft - - 3.71 - -
7
Sample ID
Easting Northing RL (m)
Rock Type Comment
WO3 Sn Au Ag Bi
mE (MGA)
mN
(MGA)
m % % g/t g/t %
IC101106-22 451459 6396690 341 blue-grey vein quartz + Feox 15m deep shaft - - 0.04 9.0 0.03
IC101106-23 451444 6396675 339 blue-grey vein quartz + Feox 2mx2mx1m prospecting pit 0.09 - 0.11 - -
IC101106-24 451428 6396658 340 vein quartz + Feox 15mx3mx1m prospecting pit - - 1.37 - -
IC101106-25 451387 6396611 343
white vein quartz + Feox +
boxwork gossan
5mx7mx2m prospecting pit 0.03 - 0.50 - -
IC101106-26 451387 6396611 343
white vein quartz + Feox +
boxwork gossan
5mx7mx2m prospecting pit - - 0.50 - -
IC101106-27 451373 6396585 344
white vein quartz + Feox +
boxwork gossan
5m thick vein - - 0.29 - -
IC101106-28 451500 6396759 342 vein quartz + Feox 1m wide vein - - - - -
IC101106-29 451547 6396795 344 blue-grey vein quartz + Feox - - 0.14 - -
IC101106-30 451552 6396859 340 vein quartz + Feox 1m wide vein - - 0.04 - -
IC101106-31 451478 6396729 343 vein quartz + Feox 0.03 0.83 - 10.9 0.05
IC101106-32 451761 6396189 343 stockwork vein quartz + Feox quartz veined psammite - - - - -
IC101106-33 450704 6397749 349 vein quartz + Feox 8mx3mx1m prospecting pit - - 0.08 - -
IC101106-34 450704 6397749 349 vein quartz + Feox 8mx3mx1m prospecting pit 0.04 - - - -
IC101106-35 450686 6397737 350 stockwork vein quartz + Feox quartz veined psammite - - - - -
AH20260709-
5
450871 6396957 305 Qtz vn-wolframite
old working, mullock qtz vn with
wolframite & feox, near small pit.
Some pink qtz
7.44 - 0.09 - 0.03
AH20260709-
6
450940 6397019 305 qtz vn, feox, W
mullock qtz vn with Feox & W,
previous IC sample site
2.01 - 0.05 - 0.05
AH20260709-
7
451736 6396100 305 qtzv with feox
on hillside with lot of siliceous
sdst/hfels with stockwork qtz vn
and cross cutting thicker qtz vn.
- - - 56.0 0.07
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JORC CODE, 2012 - TABLE 1
Section 1 Sampling Techniques and Data – TALLEBUNG PROJECT
(Criteria in this section apply to all succeeding sections)
Criteria 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 downhole
gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as
limiting the broad meaning of sampling.
Rock chips and grab samples taken with a geological hammer and collected into labelled calico bags.
All samples were submitted to ALS Orange for preparation and assaying for both SKY and YTC Resources
samples.
• Include reference to measures taken to ensure sample representivity and the appropriate
calibration of any measurement tools or systems used.
For rock chip samples, lab standards and blanks were relied upon.
• 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.
Each sample was dried, crushed and pulverised as per standard industry practice.
Rock chip samples were dried, crushed and pulverised to 90% passing 75 microns.
Pulps were also pulverised to ensure the sample is homogenised.
Both SKY and YTC Resources samples were assayed gold fire assay Au-AA26 and via multielement
assaying completed for 48 elements by 0.25g four-acid digest with ICPMS determination (method ME-
ICP61). Sn & W were analysed at ALS via ME-MS85 by lithium meta-borate fusion and ICP-MS. Overlimit
samples are analysed via ME-XRF30 fusion.
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, face-
sampling bit or other type, whether core is oriented and if so, by what method, etc)
No new drilling results reported.
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
No new drilling results reported.
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
Samples were geologically described at the time of collection. The descriptions were of sufficient detail to
support the current work.
All rock chips samples were described at the time of collection.
Both qualitative and quantitative data is collected. All rock chips were digitally photographed.
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Criteria Explanation Commentary
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
No new drilling results reported.
No field duplicates are taken for the rock chip samples. The sample was crushed and pulverised to 90%
passing 75 microns. This was considered to appropriately homogenise the sample.
The available data suggests that sampling procedures provide sufficiently representative subsamples for
the current interpretation.
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
Standard assay procedures performed by a reputable assay lab, (ALS Group), were undertaken.
Multielement assaying was completed for 48 elements by 0.25g four-acid digest with ICPMS
determination (method ME-ICP61). Gold fire assay via Au-AA26. Sn & W were analysed at ALS via ME-
MS85 by lithium meta-borate fusion and ICP-MS. Overlimit samples are analysed via ME-XRF30 fusion.
No geophysical tools were used in the determination of assay results.
Internal laboratory checks confirm assay precision and accuracy with sufficient confidence for the
current results.
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
Data is compiled, collated and reviewed by senior staff. External consultants do not routinely verify
exploration data until resource estimation procedures are deemed necessary. The intersection
calculations were viewed by >1 geological personnel.
Assay data was provided by ALS via .csv spreadsheets. For data from YTC Resources, SKY has the original
certificates from the laboratory and this program shows both sets of results are repeatable and reliable.
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
SKY and YTC Resources have used handheld GPS to locate rock chip locations (nominal accuracy ± 5m).
All coordinates are based on Map Grid Australia Zone 55E, Geodetic Datum of Australia 1994.
Data spacing and
distribution
• Data spacing for reporting of Exploration Results
• 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
No new drilling results reported.
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 sampling bias, this should be assessed and reported
if material
No new drilling results reported, rock chip results being reported.
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Criteria Explanation Commentary
Sample security • The measures taken to ensure sample security Sample chain of custody has been managed by the employees of Sky Metals who sampling and transport
of the samples to assay laboratory. For YTC Resources samples, YTC Resources similarly managed the
sampling and transport of the samples to assay laboratory.
All samples are bagged in tied numbered calico bags, grouped into larger tied polyweave bags, or placed
in a stillage box and transported to ALS in Orange by SKY personnel. All sample submissions are
documented via ALS tracking system and all assays are reported via email. Also the same process for YTC
Resources.
Sample pulps are returned to site and stored for an appropriate length of time (minimum 3 years). The
Company has in place protocols to ensure data security.
Audits or reviews • The results of any audits or reviews of sampling techniques and data The Company has external consultants to verify exploration data for the resource estimation process.
Further details for the Exploration Target estimate can be found in SKY ASX Announcement 31 July 2025.
Section 2 Reporting of Exploration Results – TALLEBUNG PROJECT
(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 Tallebung Project is described by NSW Exploration Licence 6699
The tenement is 100% owned by Stannum Pty Ltd, a 100% owned subsidiary of Big Sky Metals Pty Ltd
and a 100% owned subsidiary of Sky Metals Ltd.
The Tallebung tenement is overlain by Native Title Determination Application No NC12/1 (Federal Court
No NSD 415/12). A determination of extinguished native title was received over a portion of the
Tallebung Tin Field.
An agreement between for the remainder of the tenement where Native Title has not been
extinguished, an agreement has been reached between Stannum and the Native Title Applicant to allow
access to the remainder of the tenement.
• 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
Stannum Pty Ltd have previously Commenced a Right to Negotiate Process (RTN) with the claimant
group with respect to Application No NC12/1 (Federal Court No NSD 415/12). These negotiations have
11
Criteria Explanation Commentary
resulted in a land access agreement to be sign with Stannum Pty Ltd. A determination of extinguished
native title was received over a major portion of the Tallebung Tin Field and Stannum has also signed an
access agreement with the Native Title Applicant for access to the entire lease.
Exploration done by
other parties
• Acknowledgment and appraisal of exploration by other parties The Tallebung Project area was subject to a modern, large-scale alluvial/colluvial mining by the Tullebong
Tin Syndicate in the period 1963-1972. The Tullebong Syndicate completed a program of 24 short
diamond holes in 1968-69 designed to test the lode mineralisation at Tallebung.
Pruessag completed a large-scale assessment of the alluvial tin deposits in 1984-85, including RC drilling,
identifying the potential for a large, low grade alluvial deep lead.
In recent exploration, YTC Resources (now Aurelia Metals Ltd) completed trenching, diamond drilling,
aircore drilling of tailings, and resistivity geophysics (EH4) at the Tallebung tin field. YTC recognised the
continued potential for both shallow high grade, and large scale low-grade porphyry-style- tin
mineralisation.
Geology • Deposit type, geological setting and style of mineralisation The Ordovician aged Tallebung Group sediments in the Tallebung Tin Field area outcrop as a sequence of
weakly metamorphosed shales, siltstones, carbonaceous mudstones and minor quartz-rich sandstones.
The rocks are tightly folded, striking NNW at around 330o with variable dips. The tin mineralisation is
thought to be sourced from the Silurian-aged Erimeran granite, which outcrops 2km south of the
Tallebung Tin Field. The Tallebung Tin Field represents a site of significant tin and tungsten production
from high grade, quartz lodes and their associated alluvial and deep lead deposits. The field has been
worked sporadically from the discovery of lode tin in the 1890’s, through to the large-scale open cut
mining of alluvial tin by the Tullabong Tin Syndicate in the period 1963 to 1971. The Tallebung Tin Field
contains significant, tin bearing, unconsolidated sediments which are alluvial to elluvial in nature, poorly
sorted and contain coarse bedrock fragments up to 15cm in a matrix of sandy/silty clay with some iron
oxides and cemented layers. Sediment thickness varies from 5m to 36 metres. The east-trending, tin
bearing leads and deep leads draining the Tallebung lode deposits are the dominant source of historic tin
production from the field. The Tallebung site is now a large-scale derelict mining environment with
approximate at least 1.6km strike of shallow open cuts, large scale tailings dam and decaying mine site
housing and infrastructure.
The tin and tungsten bearing quartz reefs are located on the western edge of the worked out alluvial
open pits. The lodes form a well-developed quartz vein stock work zone extending for approximately at
least 1.6km on a 330o
trend. Thicker quartz lodes >0.5m have been selectively exploited in historic shafts
and shallow open cuts along the trend.
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 in
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