REG - East Star Resources - VMS Copper Drilling Results
17/02/2025 07:15
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RNS Number : 3309X East Star Resources PLC 17 February 2025
17 February 2025
East Star Resources Plc
("East Star" or the "Company")
VMS Copper Drilling Results
Results expected to add tonnes to existing resources and lower strip ratio of
open pit development
East Star Resources Plc (LSE:EST), which is exploring for copper and gold in
Kazakhstan, is pleased to provide initial drill results from Q4 2024 drilling
at the Verkhuba Copper Deposit ("Verkhuba") in the East Region of Kazakhstan.
Assays from all 238 core samples taken from three drill holes have been
received with several new mineralised zones intersected.
Highlights:
· All holes intersected ore grade mineralisation
· Mineralisation is recorded outside the current modelled ore bodies
but within the open pit shell, potentially leading to a Mineral Resource
increase
· Intercepts include:
Hole_ID Intercept
VU_24_DD_007A 0.7m @ 2.94% Cu and 0.17% Zn from 60.1m
4.0m @ 0.69% Cu from 210.1m including 0.5m @ 2.59% Cu from 211.8m
VU_24_DD_008A 0.6m @ 1.99% Cu from 54.2m
5.1m @ 1.43% Cu from 170.2m
0.5m @ 1.63% Cu from 221.5m
VU_24_DD_027A 1.4m @ 2.88% Zn and 0.28% Cu from 172.8m
Alex Walker, East Star CEO, commented:
"We are very pleased with these results, having drilled outside the current
resource envelope and intersected numerous ore grade intervals. In the current
open pit model, provided by AMC Consulting, these new intersections that were
previously classified as waste will now be converted to ore. This supports our
view that the ore lenses comprising the current resource model extend further
and so additional drilling in these areas will potentially grow the resource
and improve the economics.
It is important to note that the three drill holes completed were not
targeting the thickest, shallowest or highest-grade portions of the resource
and so we look forward to getting the drill rig turning again in Q2 2025."
Further Information
The new intervals were intercepted within the previously modelled open pit
shell but outside of East Star's 2024 Verkhuba Mineral Resource Estimate (See
Figure 1). The mineralised intervals appear to correlate with the same
stratigraphic unit as existing modelled ore bodies, allowing these to join up
along strike and therefore these drill results should add tonnes to the
existing resources and lower the strip ratio of an open pit development. Holes
VU_24_DD_007A and VU_24_DD_008A infilled gaps in the southern part of the
deposit to approximately 100m drill spacing. Highlighted intercepts were
reported using cut off grades of 0.3% for copper and 0.8% for zinc and limit
of 2m maximum consecutive internal waste.
Figure 1: 2024 drilling demonstrating ore in gaps in the current resource
envelope
East Star Resources Plc
Alex Walker, Chief Executive Officer
Tel: +44 (0)20 7390 0234 (via Vigo Consulting)
SI Capital (Corporate Broker)
Nick Emerson
Tel: +44 (0)1483 413 500
Vigo Consulting (Investor Relations)
Ben Simons / Peter Jacob
Tel: +44 (0)20 7390 0234
About East Star Resources Plc
East Star Resources is focused on the discovery and development of copper and
gold in Kazakhstan. East Star's management are based permanently on the
ground, supported by local expertise. The Company is pursuing three
exploration strategies:
· A Volcanogenic Massive Sulphide (VMS) discovery with a maiden JORC
MRE of 20.3Mt @ 1.16% copper, 1.54% zinc and 0.27% lead, in an
infrastructure-rich region, amenable to a low capex development
· Copper porphyry and epithermal gold exploration, with multiple
opportunities for Tier 1 deposits, supported by an initial $500k grant from
BHP Xplor in 2024
· Sediment-hosted copper exploration with Getech where the initial
targeting strategy is at no cost to East Star
Visit our website:
www.eaststarplc.com (http://www.eaststarplc.com)
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Subscribe to our email alert service to be notified whenever East Star
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The person who arranged for the release of this announcement was Alex Walker,
CEO of the Company.
Competent Person Statement
Scientific or technical information in this disclosure related to exploration
was reviewed by Dr Tremain Woods, a full-time employee of Discovery Ventures
Kazakhstan Ltd, a 100% owned subsidiary of East Star Resources PLC. Dr Woods
is a member in good standing with the Geological Society of South Africa. He
has sufficient experience that is relevant to the commodity, style of
mineralization or type of deposit under consideration and activity which he is
undertaking to qualify as a Competent Person under the JORC code (2012
Edition).
JORC Code, 2012 Edition - Table 1
Section 1 Sampling Techniques and Data
Criteria JORC Code explanation Commentary
Sampling techniques · Nature and quality of sampling (e.g. cut channels, random chips, or · Samples were taken from half drill core through sulphide or oxide
specific specialised industry standard measurement tools appropriate to the mineralised intervals.
minerals under investigation, such as down hole gamma sondes, or handheld XRF
instruments, etc). These examples should not be taken as limiting the broad · Sampling was conducted through mineralized intervals, with
meaning of sampling. samples taken 2 meters into the hanging wall and footwall for intervals larger
than 3 meters. For smaller intervals (<2 meters), only the mineralized
· Include reference to measures taken to ensure sample representivity portion is sampled.
and the appropriate calibration of any measurement tools or systems used.
· Sample quality is ensured by a structured scheme, including
· Aspects of the determination of mineralisation that are Material to blanks, certified reference materials (CRM), and duplicates.
the Public Report.
· Banks are inserted at the beginning and end of large, mineralized
· In cases where 'industry standard' work has been done this would be intervals, but not for smaller isolated intervals.
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 · CRMs are inserted at every 50th and 100th sample to monitor
assay'). In other cases, more explanation may be required, such as where there consistency.
is coarse gold that has inherent sampling problems. Unusual commodities or
mineralisation types (e.g. submarine nodules) may warrant disclosure of · Coarse duplicates are taken every 40th and 80th sample, focused
detailed information. on mineralized portions, and 5% of mineralized pulps are sent for external lab
analysis.
· A total of 191.4 meters of core were sampled, with 216 core
samples collected, including 12 blanks, 5 CRMs, and 5 duplicate samples.
· Core samples were prepared by ALS Kazgeochemistry LLP, using
standard methods like crushing, sieving (<70% passing 2mm), and milling
(>85% passing 75μm).
· Samples are analysed using the ME-ICP41 method for routine
analysis, and for over-limit ore samples, the ME-OG62 method is used.
Drilling techniques · Drill type (e.g. core, reverse circulation, open-hole hammer, rotary · Drilling was conducted using stand HQ sized diamond drilling
air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple technique.
or standard tube, depth of diamond tails, face-sampling bit or other type,
whether core is oriented and if so, by what method, etc). · Positive Group Kazakhstan undertook drilling.
· Drill core was orientated using a REFLEX Act III orientation tool.
All holes that weren't drilled vertically were orientated once solid core was
intersected.
· After drilling was completed, all holes were survey at 50 m intervals
using the REFLEX EZ TRAC survey tool
Drill sample recovery · Method of recording and assessing core and chip sample recoveries and · Core recovery was measured by East Star geologists, an average of 96
results assessed. % recovery was recorded for the three completed drill holes.
· Measures taken to maximise sample recovery and ensure representative · Through the mineralized intervals, core recovery was 97% and greater.
nature of the samples.
· There is no relationship between Cu, Pb or Zn grades and recovery.
· Whether a relationship exists between sample recovery and grade and
whether sample bias may have occurred due to preferential loss/gain of · There does not appear to have been any bias due to sample material
fine/coarse material. loss/grain
Logging · Whether core and chip samples have been geologically and · East Star geologists undertook core logging.
geotechnically logged to a level of detail to support appropriate Mineral
Resource estimation, mining studies and metallurgical studies. · Quantitative data for mineralization, lithology, structure,
alteration, oxidation, and weathering was logged.
· Whether logging is qualitative or quantitative in nature. Core (or
costean, channel, etc) photography. · All recovered core was logged and photographed before and after
sampling
· The total length and percentage of the relevant intersections logged.
Sub-sampling techniques and sample preparation · If core, whether cut or sawn and whether quarter, half or all core · Half core samples were collected for processing, the remaining half
taken. core is securely stored at East Star's core storage facilities in Verkhuba
Village
· If non-core, whether riffled, tube sampled, rotary split, etc and
whether sampled wet or dry. · Samples were crushed into chips; the chips were passed through a
riffle splitter several times to obtain 500 g samples for milling. Crushed
· For all sample types, the nature, quality, and appropriateness of the sample duplicates were analysed to confirm homogeneity of crushed samples.
sample preparation technique.
· Blank granite material was also inserted into the sample stream to
· Quality control procedures adopted for all sub-sampling stages to ensure no contamination occurs during crushing or milling.
maximise representivity of samples.
· ALS laboratories weigh samples before and after sieving, to ensure
· Measures taken to ensure that the sampling is representative of the that the thresholds for size fractions are met for each sample.
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.
Quality of assay data and laboratory tests · The nature, quality and appropriateness of the assaying and · Aqua regia is a partial digest method well suited to base metal
laboratory procedures used and whether the technique is considered partial or analyses, the method at ALS is internationally recognized and provides precise
total. and accurate analyses.
· For geophysical tools, spectrometers, handheld XRF instruments, etc, · Standard assay quality controls are used by the laboratory and East
the parameters used in determining the analysis including instrument make and Star inserted QA/QC samples to evaluate and confirm the assay results. All
model, reading times, calibrations factors applied and their derivation, etc. QA/QC samples reported within limits.
· 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 · Significant intersections were confirmed visually by East Star's
or alternative company personnel. exploration manager, no independent verification has been completed to date.
· The use of twinned holes. · Logged data was inspected by East Star's exploration manager, any
changes to the logged data were made before data was sent to Rock Solid based
· Documentation of primary data, data entry procedures, data in Perth, Australia to be added to the maintained SQL database
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 · Drill holes were surveyed using Garmin GPSMAP 62S handheld GPS
and down-hole surveys), trenches, mine workings and other locations used in device. DGPS surveys are planned once all drilling is completed.
Mineral Resource estimation.
· Grid system WGS83, UTM44N
· Specification of the grid system used.
· Some errors were noted in the elevation readings (from 5 - 14 m
· Quality and adequacy of topographic control. errors), these were adjusted to the elevation values of the LIDAR topography
survey at the coordinates of the drill hole.
· A drone LIDAR survey was conducted in 2023. The survey conducted by
Aurora Geophysics used a drone mounted LIDAR sensor (DJI Zenmuse L1 Lidar on a
DJI Matrice 300 RTK Combo D-RTK 2 drone) with a base station (Trimble R12 and
Trimble TDL 450 radio modem). Flight lines were 90 m apart, and the resolution
produced was 3.44 cm/pixel. The processed digital terrane model was checked
against control points.
Data spacing and distribution · Data spacing for reporting of Exploration Results. · Historical drilling was drilled along NW-SE trending lines, the lines
were spaced between 200-300m apart and drill holes were spaced between 100 and
· Whether the data spacing and distribution is sufficient to establish 250 m apart.
the degree of geological and grade continuity appropriate for the Mineral
Resource and Ore Reserve estimation procedure(s) and classifications applied. · Current drilling aims to infill the spacing to ~120m.
· Whether sample compositing has been applied. · The current drill holes have reduced the spacing within the Ultimate
Open Pit generated by AMC in April 2024 to ~100m.
· Geological distribution is sufficient for inferred resources
throughout the ultimate pit shell (from April 2024). Some parts have
sufficient spacing to be classified as indicated resources.
· Significant intercepts are reported for results from 2024 drilling
using the following parameters:
Parameter Report 1 Report 2 Report 3
Element Cu Cu Zn
Min Cut-off Grade % 1 0.3% 0.8%
Max Cut-off Grade % n/a n/a n/a
Min Intercept Length (metres) n/a 2m n/a
Maximum Consecutive Internal Waste (m) 2m 2m 2m
Minimum Intercept Grade % n/a All (no filter) All (no filter)
Co-elements in report Pb, Zn Pb, Zn Cu, Pb
·
Orientation of data in relation to geological structure · Whether the orientation of sampling achieves unbiased sampling of · Sampling is taken for all intervals with sulphide mineralization.
possible structures and the extent to which this is known, considering the
deposit type. · Sampling adhered to lithological boundaries and additionally the
hanging wall and footwall was sampled.
· If the relationship between the drilling orientation and the
orientation of key mineralized structures is considered to have introduced a · The ore body generally dips 30 to 40 to the SW. In some parts of the
sampling bias, this should be assessed and reported if material. deposit the ore body dips steeper 80. These steeper areas of mineralization
are interpreted to be the result of post mineralization deformation.
· The ore body is cut by steep NE faults, these normal faults are
interpreted to throw the lower ore body 20-40 m
Sample security · The measures taken to ensure sample security. · After samples are cut and bagged, they are sealed with zip ties.
Samples were taken by East Star's senior geologist to ALS Oskemen.
· The samples remained sealed until handed over to the laboratory.
· Samples in the laboratory follow ALS standard procedures to ensure
sample security.
Audits or reviews · The results of any audits or reviews of sampling techniques and data. · No audits were undertaken for this phase of sampling.
· The sample methodology was checked and confirmed by the Competent
Person for the AMC MRE (April 2024)
·
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 mineralized structures is considered to have introduced a
sampling bias, this should be assessed and reported if material.
· Sampling is taken for all intervals with sulphide mineralization.
· Sampling adhered to lithological boundaries and additionally the
hanging wall and footwall was sampled.
· The ore body generally dips 30 to 40 to the SW. In some parts of the
deposit the ore body dips steeper 80. These steeper areas of mineralization
are interpreted to be the result of post mineralization deformation.
· The ore body is cut by steep NE faults, these normal faults are
interpreted to throw the lower ore body 20-40 m
Sample security
· The measures taken to ensure sample security.
· After samples are cut and bagged, they are sealed with zip ties.
Samples were taken by East Star's senior geologist to ALS Oskemen.
· The samples remained sealed until handed over to the laboratory.
· Samples in the laboratory follow ALS standard procedures to ensure
sample security.
Audits or reviews
· The results of any audits or reviews of sampling techniques and data.
· No audits were undertaken for this phase of sampling.
· The sample methodology was checked and confirmed by the Competent
Person for the AMC MRE (April 2024)
Section 2 Reporting of Exploration Results
Criteria JORC Code explanation Commentary
Mineral tenement and land tenure status · Type, reference name/number, location and ownership including · The Verkhuba polymetallic deposit is located in the eastern part of
agreements or material issues with third parties such as joint ventures, exploration license 1795-EL (the "License"). The license was issued to
partnerships, overriding royalties, native title interests, historical sites, Discovery Ventures Kazakhstan Limited (the "DVK") on 27 July 2022 for initial
wilderness or national park and environmental settings. period of 6 years with a possibility of further five years extension subject
to reduction of the license area by 40%.
· 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. · East Star resources have servitude for exploration from the local
Akim (administrative head), the license can be explored under these
agreements.
· There are no known legal or security impediments to obtaining a
mining license
Exploration done by other parties · Acknowledgment and appraisal of exploration by other parties. · Table of previously completed exploration
Principal author, year Period Exploration Results
Yakovlev et al., 1950 1948-1950 Geological mapping Geological map 1:10,000
Krysova et al., 1954 1953-1954 Geological mapping Geological map 1:10,000
Yusupov et al., 1956 1956 Geological traverses, core drilling Potential of oxidation zone
Anoshin et al., 1972 1971-1972 Geological, geochemical survey, shallow prospecting shafts and drilling, Follow-up targets, discovery of new mineralized zones at depth
ground IP, EM, magnetics, core drilling
Rodionov, Gorelova, 1976 1974-1976 Geological traverses, deep drilling Follow-up targets, prognostic resources
Avdonin et al., 1977 1974-1977 Mapping of Devonian volcanic centres Follow-up targets, maps of distal and proximal volcanic facies
Nazarov, San'kov, 1986 1982-1986 Geological mapping at scale 1:50,000, ground IP, EM, magnetics, diamond Prognostic resources
drilling on the anomalies
Radchenko et al., 1987 1985-1987 Grid drilling 800-400 x 400-200 m, geochemical sampling, ground IP, EM, Follow-up targets, tracing of mineralization
magnetics
Grigorovich et al., 1990 1986-1988 Infill diamond drilling 200 x 400, 100 x 200, 75 x 100-180 m, underground Completion of drilling database of the Verkhuba deposit for follow-up MRE
development (an adit and drives) totalling 3001 m, metallurgical testing
Ermolaev et al., 1990 1990 Technical economic consideration of Verkhuba deposit Mineral resource estimate in P(1)-C(2) categories (GKZ)
ESR 2023 Exploration Target estimate Exploration Target estimate report (JORC)
ESR 2024 Drilling of six verification and in-fill holes, topography survey, development MRE report
of lithological model
Geology · Deposit type, geological setting, and style of mineralisation. · Verkhuba is Volcanogenic Massive Sulphide (VMS) deposit. Historical
reports indicate that the type is felsic bimodal (or Kuroko-type).
· The mineralization is lenticular massive and disseminated sulphides
hosted in volcaniclastic units sub horizontal units.
· Mineralisation occurs as a copper rich unit at shallower depths
(<150 m) and a zinc-copper unit deeper (~200m)
· The area has seen post depositional deformation in the form of
folding and faulting
Drill hole Information · A summary of all information material to the understanding of the · Drill hole information:
exploration results including a tabulation of the following information for
Drillhole Name X Y Z Dip Azimuth Target Depth Current Depth Date Started Date Completed
all Material drill holes: VU_24_DD007A 603754 5591358 402 -70 340 280 270 11/17/2024 11/29/2024
VU_24_DD008 603661 5591388 466 -65 335 260 110,5 11/04/2024 11/12/2024
o easting and northing of the drill hole collar VU_24_DD008A 603660 5591397 466 -70 5 260 268,0 12/12/2024 12/19/2024
VU_24_DD027A 603488 5591275 494 -90 0 251 251,0 12/03/2024 12/10/2024
o elevation or RL (Reduced Level - elevation above sea level in metres) of
the drill hole collar
· Significant intercepts:
Hole_ID Intercept
o dip and azimuth of the hole VU_24_DD_007A 0.7m @ 2.94% Cu and 0.17% Zn from 60.1m
4.0m @ 0.69% Cu from 210.1m including 0.5m @ 2.59% Cu from 211.8m
o down hole length and interception depth VU_24_DD_008A 0.6m @ 1.99% Cu from 54.2m
5.1m @ 1.43% Cu from 170.2m
o hole length. 0.5m @ 1.63% Cu from 221.5m
VU_24_DD_027A 1.4m @ 2.88% Zn and 0.28% Cu from 172.8m
· 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
· No material information has been excluded from this report
understanding of the report, the Competent Person should clearly explain why
this is the case.
Data aggregation methods · In reporting Exploration Results, weighting averaging techniques, · Significant intercepts are reported for results from 2024 drilling
maximum and/or minimum grade truncations (e.g. cutting of high grades) and using the following parameters:
cut-off grades are usually Material and should be stated.
Parameter Report 1 Report 2 Report 3
Element Cu Cu Zn
· Where aggregate intercepts incorporate short lengths of high-grade Min Cut-off Grade % 1 0.3% 0.8%
results and longer lengths of low-grade results, the procedure used for such Max Cut-off Grade % n/a n/a n/a
aggregation should be stated and some typical examples of such aggregations Min Intercept Length (metres) n/a 2m n/a
should be shown in detail. Maximum Consecutive Internal Waste (m) 2m 2m 2m
Minimum Intercept Grade % n/a All (no filter) All (no filter)
· The assumptions used for any reporting of metal equivalent values Co-elements in report Pb, Zn Pb, Zn Cu, Pb
should be clearly stated.
· No metal equivalents are reported.
· Results for 32 elements received, but only Cu, Pb Zn is reported.
Relationship between mineralisation widths and intercept lengths · These relationships are particularly important in the reporting of · The ore bodies are generally concordant to lithology (perpendicular
Exploration Results. to core axis). At some depths mineralization occurs as steeply dipping veins
and veinlets with limited extent (low angles to core axis).
· If the geometry of the mineralisation with respect to the drill hole
angle is known, its nature should be reported. · Drill holes were planned at 65 - 70° towards the north to intercept
mineralisation at perpendicular angles. Mineralisation is typically
· If it is not known and only the down hole lengths are reported, there sub-horizontal in core indicating that the true thickness is ~90% of the
should be a clear statement to this effect (e.g. 'down hole length, true width thickness of intervals in core. Therefore, one can assume that intervals
not known'). thickness are as drilled.
Diagrams · Appropriate maps and sections (with scales) and tabulations of · Relevant diagrams have been included in the body text
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.
Balanced reporting · Where comprehensive reporting of all Exploration Results is not · Grades below the cut off parameters have not been reported with these
practical, representative reporting of both low and high grades and/or widths results. However, the mineralization has been noted within East Star's models
should be practiced to avoid misleading reporting of Exploration Results. and will inform future estimates
Other substantive exploration data · Other exploration data, if meaningful and material, should be · Not applicable
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.
Further work · The nature and scale of planned further work (e.g. tests for lateral · The three completed drill holes totalling 789 m of a planned 1,500 m
extensions or depth extensions or large-scale step-out drilling). of initial drilling. Should the drilling continue to provide satisfactory
results a second phase of 3,000 m of infill drilling is planned.
· Diagrams clearly highlighting the areas of possible extensions,
including the main geological interpretations and future drilling areas, · Map of planned and completed drillholes is included in the body text.
provided this information is not commercially sensitive.
Geology
· Deposit type, geological setting, and style of mineralisation.
· Verkhuba is Volcanogenic Massive Sulphide (VMS) deposit. Historical
reports indicate that the type is felsic bimodal (or Kuroko-type).
· The mineralization is lenticular massive and disseminated sulphides
hosted in volcaniclastic units sub horizontal units.
· Mineralisation occurs as a copper rich unit at shallower depths
(<150 m) and a zinc-copper unit deeper (~200m)
· The area has seen post depositional deformation in the form of
folding and faulting
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:
o easting and northing of the drill hole collar
o elevation or RL (Reduced Level - elevation above sea level in metres) of
the drill hole collar
o dip and azimuth of the hole
o down hole length and interception depth
o 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.
· Drill hole information:
Drillhole Name X Y Z Dip Azimuth Target Depth Current Depth Date Started Date Completed
VU_24_DD007A 603754 5591358 402 -70 340 280 270 11/17/2024 11/29/2024
VU_24_DD008 603661 5591388 466 -65 335 260 110,5 11/04/2024 11/12/2024
VU_24_DD008A 603660 5591397 466 -70 5 260 268,0 12/12/2024 12/19/2024
VU_24_DD027A 603488 5591275 494 -90 0 251 251,0 12/03/2024 12/10/2024
· Significant intercepts:
Hole_ID Intercept
VU_24_DD_007A 0.7m @ 2.94% Cu and 0.17% Zn from 60.1m
4.0m @ 0.69% Cu from 210.1m including 0.5m @ 2.59% Cu from 211.8m
VU_24_DD_008A 0.6m @ 1.99% Cu from 54.2m
5.1m @ 1.43% Cu from 170.2m
0.5m @ 1.63% Cu from 221.5m
VU_24_DD_027A 1.4m @ 2.88% Zn and 0.28% Cu from 172.8m
· No material information has been excluded from this report
Data aggregation methods
· In reporting Exploration Results, weighting averaging techniques,
maximum and/or minimum grade truncations (e.g. cutting of high grades) and
cut-off grades are usually Material and should be stated.
· Where aggregate intercepts incorporate short lengths of high-grade
results and longer lengths of low-grade results, the procedure used for such
aggregation should be stated and some typical examples of such aggregations
should be shown in detail.
· The assumptions used for any reporting of metal equivalent values
should be clearly stated.
· Significant intercepts are reported for results from 2024 drilling
using the following parameters:
Parameter Report 1 Report 2 Report 3
Element Cu Cu Zn
Min Cut-off Grade % 1 0.3% 0.8%
Max Cut-off Grade % n/a n/a n/a
Min Intercept Length (metres) n/a 2m n/a
Maximum Consecutive Internal Waste (m) 2m 2m 2m
Minimum Intercept Grade % n/a All (no filter) All (no filter)
Co-elements in report Pb, Zn Pb, Zn Cu, Pb
· No metal equivalents are reported.
· Results for 32 elements received, but only Cu, Pb Zn is reported.
Relationship between mineralisation widths and intercept lengths
· These relationships are particularly important in the reporting of
Exploration Results.
· If the geometry of the mineralisation with respect to the drill hole
angle is known, its nature should be reported.
· If it is not known and only the down hole lengths are reported, there
should be a clear statement to this effect (e.g. 'down hole length, true width
not known').
· The ore bodies are generally concordant to lithology (perpendicular
to core axis). At some depths mineralization occurs as steeply dipping veins
and veinlets with limited extent (low angles to core axis).
· Drill holes were planned at 65 - 70° towards the north to intercept
mineralisation at perpendicular angles. Mineralisation is typically
sub-horizontal in core indicating that the true thickness is ~90% of the
thickness of intervals in core. Therefore, one can assume that intervals
thickness are as drilled.
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.
· Relevant diagrams have been included in the body text
Balanced reporting
· Where comprehensive reporting of all Exploration Results is not
practical, representative reporting of both low and high grades and/or widths
should be practiced to avoid misleading reporting of Exploration Results.
· Grades below the cut off parameters have not been reported with these
results. However, the mineralization has been noted within East Star's models
and will inform future estimates
Other substantive exploration data
· Other exploration data, if meaningful and material, should be
reported including (but not limited to): geological observations; geophysical
survey results; geochemical survey results; bulk samples - size and method of
treatment; metallurgical test results; bulk density, groundwater, geotechnical
and rock characteristics; potential deleterious or contaminating substances.
· Not applicable
Further work
· The nature and scale of planned further work (e.g. tests for lateral
extensions or depth extensions or large-scale step-out drilling).
· Diagrams clearly highlighting the areas of possible extensions,
including the main geological interpretations and future drilling areas,
provided this information is not commercially sensitive.
· The three completed drill holes totalling 789 m of a planned 1,500 m
of initial drilling. Should the drilling continue to provide satisfactory
results a second phase of 3,000 m of infill drilling is planned.
· Map of planned and completed drillholes is included in the body text.
Appendix 1: Assays Results
Hole_ID Depth_From Depth_To Cu_pct Pb_pct Zn_pct Notes
VU_24_DD_007A 0 10.2 not assayed
VU_24_DD_007A 10.2 16 no significant intercept
VU_24_DD_007A 16 17 0.175 0.0004 0.011 HCORE
VU_24_DD_007A 17 20.6 no significant intercept
VU_24_DD_007A 20.6 21.6 0.137 0.0006 0.0585 HCORE
VU_24_DD_007A 21.6 28.1 no significant intercept
VU_24_DD_007A 28.1 38 not assayed
VU_24_DD_007A 38 42 no significant intercept
VU_24_DD_007A 42 43 0.166 0.0009 0.037 HCORE
VU_24_DD_007A 43 48.5 no significant intercept
VU_24_DD_007A 48.5 58.1 not assayed
VU_24_DD_007A 58.1 60.1 no significant intercept
VU_24_DD_007A 60.1 60.8 2.94 0.0647 0.173 HCORE
VU_24_DD_007A 60.8 61.5 0.265 0.0908 0.253 HCORE
VU_24_DD_007A 61.5 74.2 no significant intercept
VU_24_DD_007A 74.2 74.9 0.1975 0.0004 0.0483 HCORE
VU_24_DD_007A 74.9 80.5 no significant intercept
VU_24_DD_007A 80.5 81.3 0.129 0.0004 0.0297 HCORE
VU_24_DD_007A 81.3 84.2 no significant intercept
VU_24_DD_007A 84.2 186.5 not assayed
VU_24_DD_007A 186.5 189 no significant intercept
VU_24_DD_007A 189 203.2 not assayed
VU_24_DD_007A 203.2 210.1 no significant intercept
VU_24_DD_007A 210.1 211 0.908 0.0006 0.0238 HCORE
VU_24_DD_007A 211 211.8 no significant intercept
VU_24_DD_007A 211.8 212.3 2.59 0.001 0.0385 HCORE
VU_24_DD_007A 212.3 213.1 no significant intercept
VU_24_DD_007A 213.1 214.1 0.621 0.0004 0.0229 HCORE
VU_24_DD_007A 214.1 218.4 no significant intercept
VU_24_DD_007A 218.4 270 not assayed
VU_24_DD_008A 0 14.4 not assayed
VU_24_DD_008A 14.4 15.9 no significant intercept
VU_24_DD_008A 15.9 16.9 not assayed
VU_24_DD_008A 16.9 17.4 no significant intercept
VU_24_DD_008A 17.4 18 0.286 0.0003 0.0078 HCORE
VU_24_DD_008A 18 18.5 no significant intercept
VU_24_DD_008A 18.5 38.9 not assayed
VU_24_DD_008A 38.9 40.4 no significant intercept
VU_24_DD_008A 40.4 43.8 no data
VU_24_DD_008A 43.8 44.3 no significant intercept
VU_24_DD_008A 44.3 44.9 0.317 0.0003 0.0146 HCORE
VU_24_DD_008A 44.9 45.4 0.106 0.0003 0.0225 HCORE
VU_24_DD_008A 45.4 51.5 not assayed
VU_24_DD_008A 51.5 53.5 no significant intercept
VU_24_DD_008A 53.5 54.2 0.304 0.0003 0.0249 HCORE
VU_24_DD_008A 54.2 54.8 1.985 0.0011 0.0247 HCORE
VU_24_DD_008A 54.8 55.7 0.259 0.0003 0.0102 HCORE
VU_24_DD_008A 55.7 57.2 no significant intercept
VU_24_DD_008A 57.2 58 0.275 0.0002 0.0093 HCORE
VU_24_DD_008A 58 59 no significant intercept
VU_24_DD_008A 59 60.5 0.1215 0.0002 0.0108 HCORE
VU_24_DD_008A 60.5 61.5 0.41 0.0003 0.0115 HCORE
VU_24_DD_008A 61.5 62 0.1365 0.0002 0.0089 HCORE
VU_24_DD_008A 62 62.5 0.1175 0.0002 0.0089 HCORE
VU_24_DD_008A 62.5 63.5 0.264 0.0002 0.008 HCORE
VU_24_DD_008A 63.5 64.4 0.225 -0.0002 0.0083 HCORE
VU_24_DD_008A 64.4 67.4 no significant intercept
VU_24_DD_008A 67.4 69.7 not assayed
VU_24_DD_008A 69.7 71.1 no significant intercept
VU_24_DD_008A 71.1 72 0.125 0.0003 0.0095 HCORE
VU_24_DD_008A 72 72.5 no significant intercept
VU_24_DD_008A 72.5 78.3 not assayed
VU_24_DD_008A 78.3 87 no significant intercept
VU_24_DD_008A 87 129.8 not assayed
VU_24_DD_008A 129.8 130.3 no significant intercept
VU_24_DD_008A 130.3 131.7 no significant intercept
VU_24_DD_008A 131.7 141.7 not assayed
VU_24_DD_008A 141.7 145.6 no significant intercept
VU_24_DD_008A 145.6 146.2 0.1975 0.0005 0.0113 HCORE
VU_24_DD_008A 146.2 152 no significant intercept
VU_24_DD_008A 152 166.1 not assayed
VU_24_DD_008A 166.1 170.2 no significant intercept
VU_24_DD_008A 170.2 170.8 0.306 0.0133 0.026 HCORE
VU_24_DD_008A 170.8 172 1.02 0.0074 0.0484 HCORE
VU_24_DD_008A 172 173.1 0.965 0.0081 0.0374 HCORE
VU_24_DD_008A 173.1 174.2 2.42 0.0062 0.0621 HCORE
VU_24_DD_008A 174.2 175.3 1.97 0.0051 0.0834 HCORE
VU_24_DD_008A 175.3 177.3 no significant intercept
VU_24_DD_008A 177.3 203.5 not assayed
VU_24_DD_008A 203.5 205.5 no significant intercept
VU_24_DD_008A 205.5 214.3 no data
VU_24_DD_008A 214.3 215.6 no significant intercept
VU_24_DD_008A 215.6 216.1 0.119 0.0004 0.0167 HCORE
VU_24_DD_008A 216.1 221 not assayed
VU_24_DD_008A 221 221.5 no significant intercept
VU_24_DD_008A 221.5 222 1.63 0.0027 0.0206 HCORE
VU_24_DD_008A 222 222.5 no significant intercept
VU_24_DD_008A 222.5 268 not assayed
VU_24_DD_027A 0 47.9 not assayed
VU_24_DD_027A 47.9 49.5 no significant intercept
VU_24_DD_027A 49.5 73.2 not assayed
VU_24_DD_027A 73.2 98 no significant intercept
VU_24_DD_027A 98 105 not assayed
VU_24_DD_027A 105 111.9 no significant intercept
VU_24_DD_027A 111.9 164.5 not assayed
VU_24_DD_027A 164.5 166.2 no significant intercept
VU_24_DD_027A 166.2 172.3 not assayed
VU_24_DD_027A 172.3 172.8 no significant intercept
VU_24_DD_027A 172.8 173.5 0.273 0.0112 3.59 HCORE
VU_24_DD_027A 173.5 174.2 0.278 0.0042 2.16 HCORE
VU_24_DD_027A 174.2 174.8 no significant intercept
VU_24_DD_027A 174.8 185.3 not assayed
VU_24_DD_027A 185.3 188 no significant intercept
VU_24_DD_027A 188 194.5 not assayed
VU_24_DD_027A 194.5 196.9 no significant intercept
VU_24_DD_027A 196.9 221.8 not assayed
VU_24_DD_027A 221.8 228 no significant intercept
VU_24_DD_027A 228 251 not assayed
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