REG - East Star Resources - Outstanding Historical Drill Results - Rulikha
Mon 07:00
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RNS Number : 3941G East Star Resources PLC 28 April 2025
28 April 2025
East Star Resources Plc
("East Star" or the "Company")
Outstanding Historical Polymetallic Drill Results at Rulikha Deposit
Priority 2025 drill target shown to have thick, high-grade intervals proximal
to geophysical anomalies
East Star Resources Plc (LSE:EST), which is exploring for copper and gold in
Kazakhstan, is pleased to announce that it has begun the digitisation process
of historical data from the Rulikha Deposit, reported as 14.3Mt @ 1.2% Cu,
3.5% Zn, 0.28 g/t Au, and 13.5 g/t Ag.
The historical reports demonstrate outstanding grades, including an 81.2m ore
grade interval, within East Star's currently awarded licence area and proximal
to a distinct electromagnetic anomaly and three Induced Polarisation ("IP")
anomalies to the north and northeast of these intersections.
Highlights:
· DH_353 64.3m @ 2.7% Cu from 22.9m and 16.9m @ 1.25% Cu from 87.2m
(for an 81.2m interval)
· DH_356 12.1m @ 12.1m at 10.5% Zn and 4.9% Cu, 0.44g/t Au and 17.2g/t
Ag from 34.3m
· DH_319 12.3m @ 6.1% Zn and 0.4% Cu from 112.1m
· DH_34A 7.0m @ 6.1% Zn from 475.8m
Alex Walker, East Star CEO, commented:
"These outstanding results showing thick, high-grade intervals, bode well for
these high impact Rulikha targets and I am very much looking forward to
getting the drill rig turning on these targets this summer. Our team's
incredible efforts over the winter break, finding and digitising this
historical data to prepare for our 2025 geophysics and drilling programme, has
been remarkable.
We have also developed an exceptional relationship with the District of
Shemonaikha, the municipality where Rulikha and Verkhuba are situated, over
the last four years and are very excited to continue to grow that relationship
and find more resources to prolong the regional mining operations which have
been going since 1749. I could not be prouder of our team and more excited
about the opportunities in front of us in 2025 and the geological
opportunities like this which Kazakhstan has to offer."
Figure 1 Location of drill holes on East Star's awarded exploration licence
showing the IP and EM anomalies
Notwithstanding the potentially economic nature of these drill results, the
geological knowledge gained from the digitisation process continues to
reinforce the geophysical anomalies, discussed in the announcement dated 24
April 2025. An infill IP survey is currently underway over these target areas
with the Talovskoye survey complete and initial interpretation underway, and
the survey over the eastern extension of the Rulikha prospect expected to
finish by next week. The results of these surveys will inform the priority of
the drilling programme in 2025 and East Star plans to drill test these
geophysical anomalies this year.
Once the IP programme in the East Region is completed, the contractors will
relocate to the Snowy epithermal gold anomaly to complete 4 x 1.6km IP lines
at 200m spacing over the main pyrophyllite alteration and gold and silver
anomaly to test for chargeability and resistivity anomalies resembling an
epithermal sulphide gold target or porphyry system.
Further Information
History of the Rulikha Deposit
The Rulikha Deposit and geophysical targets are situated about 33km northwest
from East Star's 100% owned Verkhuba Deposit (JORC MRE of 20.3Mt @ 1.16%
copper, 1.54% zinc and 0.27% lead). Located within the
Rulikhinsko-Vydrikhinskoe ore field in the Shemonaikha district of East
Kazakhstan, is a volcanogenic massive sulfide (VMS) polymetallic deposit
primarily explored for zinc, copper and lead. The deposit was part of a
broader geological exploration effort in the region, conducted by the East
Kazakhstan Geological Exploration Expedition under the Ministry of Geology of
the USSR and later the Republic of Kazakhstan.
Exploration of the Rulikha Deposit began in the mid-20th century, with
significant archival references to work conducted from the 1940s to the 1980s,
followed by detailed prospecting from 1989-1992:
· 1940 - 1950s: Early prospecting by the Shemonaikha Party of the Altai
identified polymetallic mineralisation. A consolidated report in 1957 (Utrobin
et al.) calculated reserves for the Rulikhinskoye (Rulikha) deposit.
· 1960s-1970s: Geological and geophysical work by the Shemonaikha
Geological Reconnaissance Party (GRP) and Priirtyshskaya Party refined the
geological structure and mineral potential. The 1979 report by Abdulmenov and
Golubtsov focused on the Buzanikhinsky area, adjacent to Rulikha.
· 1978-1983: Detailed prospecting by the Minsk and Ubin GRPs of the
Shemonaikha GRE targeted the Rulikhinsko-Vydrikhinsky and Talovsko-Rulevsky
areas, further delineating mineralisation.
· 1989-1992: The focus of the provided report, conducted under
Geological Task No. 1, involved deep drilling to assess the ore-bearing
potential of deep horizons (up to 1000-1200 m). Work was halted in January
1991 due to overlapping exploration by the Altai Geological-Geophysical
Expedition but resumed for report preparation in 1992.
The 1989-1992 exploration programme included significant drilling and sampling
efforts:
· Total Drilling - 6,785 linear metres of core drilling across 12
exploration boreholes. Drilling grid for Rulikha Deposit: 200 x 100 m for C2
category resources (GKZ resource categorisation not typically used in modern
resource estimates), 400 x 100 m or 300 x 200 m for P1 category.
· Geochemical Sampling - 737 geochemical samples collected.
· Core Sampling - 16 core samples analysed.
· Geophysical Logging: - 6,607 linear metres of gamma logging.
The results of the historical exploration found that the Rulikha Deposit hosts
VMS-polymetallic mineralisation, primarily copper, zinc and lead, with some
gold and silver. Mineralisation is localised in tuffs, volcanic sediments and
extrusive units from the Middle-Upper Devonian boundary. Mineralisation is
associated with vein-type and stratiform ores. Metallurgical or processing
test work for the Rulikha Deposit has not been completed to date.
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, initially supported by an initial US$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)
Follow us on social media:
LinkedIn: https://www.linkedin.com/company/east-star-resources/
(https://www.linkedin.com/company/east-star-resources/)
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(https://twitter.com/EastStar_PLC)
Subscribe to our email alert service to be notified whenever East Star
releases news:
www.eaststarplc.com/newsalerts (http://www.eaststarplc.com/newsalerts)
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
mineralisation or type of deposit under consideration and activity which he is
undertaking to qualify as a Competent Person under the JORC code (2012
Edition).
Table 1 Historic Drill Results
Hole ID Year Azimuth Dip X Y Z Depth (m) From (m) To (m) Thickness (m) Cu (%) Pb (%) Zn (%) Au (g/t) Ag (g/t)
DH_101 1983 86 -89 569205.1 5594002 450 470.9 92.7 93.7 1 0 0 0.52 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 137.5 139.5 2 0 0 0.52 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 141.5 146.5 5 0 0 1.2 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 156.5 166.5 10 0 0 0.68 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 170.5 174.5 4 0 0 0.81 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 176.5 182.5 6 0 0 1.07 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 215.4 221.4 6 0 0 0.68 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 225.4 238.4 13 0 0 1.05 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 239.4 241.4 2 0 0 0.6 0 0
DH_101 1983 86 -89 569205.1 5594002 450 470.9 245.4 247.4 2 0 0 0.57 0 0
DH_270 1983 38 -87 568773.6 5593831 355 604 107.2 107.8 0.6 0 0.45 0.85 0 0
DH_270 1983 38 -87 568773.6 5593831 355 604 132.5 133.2 0.7 0 0 2.87 0 0
DH_270 1983 38 -87 568773.6 5593831 355 604 135.6 137.3 1.7 0 0.11 0.45 0 0
DH_270 1983 38 -87 568773.6 5593831 355 604 139.3 147.8 8.5 0 0.13 0.47 0 0
DH_271 (20/78) 1983 254 -90 569119.2 5593696 450 1048 168 174 6 0 0 0.24 0 0
DH_271 (20/78) 1983 254 -90 569119.2 5593696 450 1048 273.3 277 3.7 0 0 0.3 0 0
DH_271 (20/78) 1983 254 -90 569119.2 5593696 450 1048 288.7 289.7 1 0.06 0 0.92 0 0
DH_292 1983 339 -86 568445.2 5594497 359 858 582 602 20 0.07 0.09 1.08 0 0
DH_2A 1992 217 -77 571420.2 5596046 490 422 145 155 10 0 0 0.25 0 0
DH_2A 1992 217 -77 571420.2 5596046 490 422 205 225 20 0 0 0.12 0 0
DH_2A 1992 217 -77 571420.2 5596046 490 422 255 275 20 0 0 0.5 0 0
DH_2A 1992 217 -77 571420.2 5596046 490 422 378 380 2 0 0 0.13 0 0
DH_303 1992 60 -87 570023.1 5595124 419 508 296.5 304.6 8.1 0.32 0.13 3.6 0 0
DH_310 1992 68 -86 570484.8 5592706 359 545.1 427.3 431 3.7 0.05 0.54 0.84 0 0
DH_318 1992 44 -87 571316.9 5593147 374 562 468.3 470.8 2.5 0.05 0.05 1.65 0 0
DH_318 1992 44 -87 571316.9 5593147 374 562 470.8 472 1.2 0.05 0.05 1.1 0 0
DH_319 1992 31 -86 569710.5 5593690 364 274 112.1 124.4 12.3 0.4 0.23 6.14 0.26 11.31
DH_319 1992 31 -86 569710.5 5593690 364 274 128.8 131.1 2.3 0.05 0.13 3.16 0.69 32.1
DH_319 1992 31 -86 569710.5 5593690 364 274 211 211.7 0.7 0.4 1.07 1.57 0 0
DH_322 1992 155 -90 569735.6 5594953 403 591 6 15 9 0 0 0.1 0 0
DH_322 1992 155 -90 569735.6 5594953 403 591 135 139 4 0.05 0 0.15 0 0
DH_322 1992 155 -90 569735.6 5594953 403 591 176 186 10 0 0 0.1 0 0
DH_322 1992 155 -90 569735.6 5594953 403 591 253 263 10 0.02 0 0.12 0 0
DH_322 1992 155 -90 569735.6 5594953 403 591 282 292 10 0 0 0.53 0 0
DH_322 1992 155 -90 569735.6 5594953 403 591 417 421 4 0 0 0.1 0 0
DH_322 1992 155 -90 569735.6 5594953 403 591 498 505 7 0 0 0.2 0 0
DH_323 1992 149 -89 566533.5 5596287 402 709 296.5 304.6 8.1 0.32 0.13 3.6 0 0
DH_323 1992 149 -89 566533.5 5596287 402 709 395 399 4 0.08 0.08 5.8 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 204 207 3 0.1 0.8 1.69 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 215 216 1 0.44 0.3 1.58 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 223 224 1 0.43 2.97 2.32 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 224 225 1 0.05 0.32 0.97 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 230 231 1 0.1 0.37 0.91 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 231 245 14 0.05 0.56 1.44 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 255 257 2 0.05 0.58 0.89 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 257 259 2 0.05 0.76 1.38 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 259 261 2 0.05 0.19 0.99 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 267 271 4 0.05 0.13 1.14 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 271 273 2 0.06 0.05 1.67 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 273 275 2 0.05 0.05 1.18 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 287 289 2 0.05 0.05 2.33 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 291 299 8 0.05 0.05 1.88 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 299 312 13 0.05 0.05 1.26 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 399 400 1 0.1 0.05 1.82 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 420.8 422.8 2 0.05 0.05 2.75 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 444.5 446.5 2 0.3 0.05 3.86 0 0
DH_332 1992 61 -88 569633.7 5593579 353 625 446.5 448.5 2 0.05 0.05 1 0 0
DH_333 1992 57 -86 571285.2 5595927 497 450 128.5 129.5 1 0.1 0.1 0.1 0 0
DH_333 1992 57 -86 571285.2 5595927 497 450 155 156 1 0.1 0.1 0.1 0 0
DH_333 1992 57 -86 571285.2 5595927 497 450 269 270 1 0.1 0.1 0.1 0 0
DH_334 1992 48 -83 571095.4 5595475 480 452 436 438.5 2.5 0 0.03 0.1 0 0
DH_34 1992 36 -90 568753 5594451 389 291.8 175.9 177.9 2 0.07 1.59 1.63 0 0
DH_34 1992 36 -90 568753 5594451 389 291.8 177.9 179.9 2 0.05 0.43 0.7 0 0
DH_340 1992 24 -88 570670 5592620 355 617.2 605.2 606.4 1.2 0.38 1.45 0.68 0.1 11.2
DH_342 1992 36 -86 570936.3 5595156 494 700 418 418.25 0.3 0 1.3 0 0 0
DH_342 1992 36 -86 570936.3 5595156 494 700 475.25 476 0.75 0 1.4 0 0 0
DH_343 (8/81) 1983 21 -90 569228.3 5594333 450 723 292.6 294.6 2 0 0 0.23 0 0
DH_343 (8/81) 1983 21 -90 569228.3 5594333 450 723 300.6 302 1.4 0.23 0 0.05 0 0
DH_343 (8/81) 1983 21 -90 569228.3 5594333 450 723 371.3 373 1.7 0.27 0 0.05 0 0
DH_345 1992 347 -78 570918.8 5596065 456 628 170 172.5 2.5 0.1 0.1 0.1 0 0
DH_34A 1992 55 -89 570304.9 5592789 357 678 349 349.4 0.4 0.03 2.34 4.27 0 0
DH_34A 1992 55 -89 570304.9 5592789 357 678 394 395.3 1.3 0.08 1.2 2.13 0 0
DH_34A 1992 55 -89 570304.9 5592789 357 678 460 465 5 0.1 0.03 1.03 0 0
DH_34A 1992 55 -89 570304.9 5592789 357 678 465 467.4 2.4 0.15 0.04 10.16 0 0
DH_34A 1992 55 -89 570304.9 5592789 357 678 467.4 475.8 8.4 0.02 0.05 0.56 0 0
DH_34A 1992 55 -89 570304.9 5592789 357 678 475.8 482.8 7 0.286 0.05 6.12 0 0
DH_353 1992 72 -89 569595.2 5593935 373 127 22.9 87.2 64.3 2.71 0.05 0.18 0.17 9.52
DH_353 1992 72 -89 569595.2 5593935 373 127 87.2 104.1 16.9 1.25 0.05 0.24 0.1 3.6
DH_356 1992 53 -88 569536 5593888 366 140 34.3 46.4 12.1 4.95 0.42 10.47 0.44 17.25
DH_357 1992 64 -89 569681 5593966 376 266 163.7 164.5 0.8 1.03 0.1 0.21 0.1 8
DH_357 1992 64 -89 569681 5593966 376 266 164.5 166.8 2.3 2.02 0.05 0.05 0.1 6.1
DH_357 1992 64 -89 569681 5593966 376 266 234 235.6 1.6 2.62 0.05 0.06 0.15 10.6
DH_357 1992 64 -89 569681 5593966 376 266 239 241 2 1.9 0.05 0.05 0.2 22.8
DH_357 1992 64 -89 569681 5593966 376 266 253.6 255.6 2 2.26 0.05 0.05 0.1 6
DH_35A 1992 18 -83 570285.7 5592508 384 865 426 428 2 0.01 0.03 0.12 0 0
DH_35A 1992 18 -83 570285.7 5592508 384 865 461 463 2 0.01 0.02 0.2 0 0
DH_366 1992 43 -78 569657.5 5593146 583 526.7 265.6 266.6 1 0.13 0.25 0.73 2.4 396.4
DH_366 1992 43 -78 569657.5 5593146 583 526.7 266.6 275 8.4 0.13 1.26 2.65 0.1 6.16
DH_366 1992 43 -78 569657.5 5593146 583 526.7 302.4 303.7 1.3 0.25 0.05 2.69 0.2 2
DH_368 1992 45 -90 569211.9 5594176 363 485 249.5 250.5 1 0.34 0.05 2.02 0.1 6.4
DH_369 1992 54 -79 569394.4 5594327 365 490.4 359.5 360.1 0.6 0.05 0.18 0.1 0.1 18
DH_370 1992 54 -87 569714.4 5593241 580 400 240.4 247.9 7.5 0.11 0.13 2.63 0.1 4.42
DH_374 1992 36 -88 569094.1 5593910 369 682 597.7 599.7 2 0.12 0.05 0.92 0.1 2
DH_374 1992 36 -88 569094.1 5593910 369 682 606 610.2 4.2 0.25 0.05 2.94 0.1 2
DH_375 1992 36 -90 569010.8 5594089 383 207.9 26.3 29 2.7 0.11 0.06 1.16 0.1 4.4
DH_375 1992 36 -90 569010.8 5594089 383 207.9 29 32.8 3.8 0.14 0.05 1.4 0.1 4
DH_375 1992 36 -90 569010.8 5594089 383 207.9 116 118.5 2.5 0.13 0.05 1.7 0.1 2
DH_375 1992 36 -90 569010.8 5594089 383 207.9 118.5 120 1.5 0.08 0.05 1 0.1 2
DH_376 1992 36 -89 568904.9 5593999 371 520 170.8 172.8 2 0.05 0.76 0.96 0.1 2
DH_378 1992 35 -84 568627.1 5594255 400 705 552.7 558.1 5.4 0.05 0.05 1.1 0.1 2
DH_380 1992 36 -89 568812.3 5593901 359 414 41.5 42.5 1 0.47 2.44 6.92 0.3 10.8
DH_380 1992 36 -89 568812.3 5593901 359 414 61.5 62 0.5 0.05 2.44 4.56 0.2 8.4
DH_380 1992 36 -89 568812.3 5593901 359 414 62 64 2 0.06 0.17 1.31 0.1 2
DH_380 1992 36 -89 568812.3 5593901 359 414 147 148 1 0.11 4.63 8.85 0.2 8
DH_381 1992 19 -90 569074.3 5593787 372 636 44.3 46.2 1.9 0.08 0.42 0.77 0.1 3.9
DH_381 1992 19 -90 569074.3 5593787 372 636 46.2 50.6 4.4 0.08 1.17 2.75 0.1 4.1
DH_3A 1992 251 -82 571270.1 5596083 500 405 8 45 37 0 0 0.1 0 0
DH_3A 1992 251 -82 571270.1 5596083 500 405 70 78 8 0.01 0.015 0.15 0 0
DH_3A 1992 251 -82 571270.1 5596083 500 405 152 156 4 0 0 0.15 0 0
DH_3A 1992 251 -82 571270.1 5596083 500 405 226 234 8 0 0 0.12 0 0
DH_6 1992 107 -75 571102 5596106 539 62.1 0 13 13 0.75 0.47 0.12 0 0
DH_6 1992 107 -75 571102 5596106 539 62.1 30.6 34.75 4.15 0.42 0.15 0.8 0 0
DH_76 1983 249 -89 569239.5 5594460 450 416.7 275.15 276.35 1.5 0 0 1.06 0 0
DH_76 1983 249 -89 569239.5 5594460 450 416.7 397 398 1 0 0.5 0.94 0 0
DH_8 1949 112 -72 571224 5595871 496 218.21 19.5 20.1 0.6 0.08 0 0.3 0 0
DH_8 1949 112 -72 571224 5595871 496 218.21 158.73 160 1.27 0.2 0.1 0.4 0 0
DH_8 1949 112 -72 571224 5595871 496 218.21 161.63 162.93 1.3 0.1 0.1 0.1 0 0
DH_8 1949 112 -72 571224 5595871 496 218.21 168.88 169.38 0.5 0 0 0.5 0 0
DH_8 1949 112 -72 571224 5595871 496 218.21 169.38 169.48 0.1 0 0 0.3 0 0
Table 2 - JORC Code, 2012 Edition
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 diamond drill core through sulphide or
specific specialised industry standard measurement tools appropriate to the oxide 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 intervals ranged from 0.1 m to over 1.0m
meaning of sampling.
· Sample quality was ensured by a GKZ standard calculations to
· Include reference to measures taken to ensure sample representivity ensure results from X-ray spectral analyses were representative
and the appropriate calibration of any measurement tools or systems used.
· A total of 599 meters of core was sampled for the Rulikha Deposit
· Aspects of the determination of mineralisation that are Material to
the Public Report. · Core samples were prepared by the geological expeditions by
cutting the core in half, crushing and milling the samples (the size fractions
· In cases where 'industry standard' work has been done this would be aren't recorded but noted as standard fractions), then analysed with X-ray
relatively simple (e.g. 'reverse circulation drilling was used to obtain 1 m spectral techniques
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 · No core is available for verification sampling
is coarse gold that has inherent sampling problems. Unusual commodities or
mineralisation types (e.g. submarine nodules) may warrant disclosure of
detailed information.
Drilling techniques · Drill type (e.g. core, reverse circulation, open-hole hammer, rotary · Drilling was conducted using standard 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). · Various drilling campaigns were conducted by geological expeditions
as detailed above.
· The drill holes purpose ranged from geochemical sampling using KGK
techniques (these holes are not included in the data for this announcement) to
deeper stratigraphic holes. Only holes with assay data through the Rulikha
deposit were included in this announcement.
Drill sample recovery · Method of recording and assessing core and chip sample recoveries and · Core recovery was an average of 42%, the total range was from 17 -
results assessed. 66% recovery
· Measures taken to maximise sample recovery and ensure representative · Recovery logs are unavailable for drill hole data base, so the
nature of the samples. relationship between recovery and grade has not been evaluated.
· 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 · Whether core and chip samples have been geologically and · Geologists from the various companies and expeditions completed
geotechnically logged to a level of detail to support appropriate Mineral logging.
Resource estimation, mining studies and metallurgical studies.
· The logging was approved by the committee for geology.
· Whether logging is qualitative or quantitative in nature. Core (or
costean, channel, etc) photography. · Sections and plan maps were available to verify geology and
structure.
· The total length and percentage of the relevant intersections logged.
· East Star geologists were able to confirm the geology at surface with
geological mapping at a scale of 1:2000 in 2024.
· Approximately 80% of the logged sections were available for this
announcement, strip logs and additional information has been requested to
inform future work.
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.
taken.
· Sub sampling techniques aren't clearly recorded in the reports
· If non-core, whether riffled, tube sampled, rotary split, etc and available.
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.
Quality of assay data and laboratory tests · The nature, quality and appropriateness of the assaying and · The samples were analyzed using X-ray spectral analysis, which
laboratory procedures used and whether the technique is considered partial or requires finely powdered, homogeneous samples to ensure accurate detection of
total. elements (Cu, Pb, Zn, Au and Ag).
· For geophysical tools, spectrometers, handheld XRF instruments, etc, · It's unclear if Au and Ag analyses were conducted on all samples
the parameters used in determining the analysis including instrument make and analysed
model, reading times, calibrations factors applied and their derivation, etc.
· The preparation would have been tailored to produce a sample
· Nature of quality control procedures adopted (e.g. standards, blanks, compatible with the X-ray spectrometer, typically involving pressing the
duplicates, external laboratory checks) and whether acceptable levels of powdered sample into a pellet or fusing it into a glass bead for analysis,
accuracy (i.e. lack of bias) and precision have been established. though the reports do not specify these steps.
· X-ray spectral techniques were commonly used in historical
exploration in the soviet era. The techniques have been subsequently replaced
by modern analytical techniques, however, they are generally viewed as having
produced accurate results. The quality of the data has only been evaluated as
reported historically by East Star geologists and have been represented as
such in this announcement.
Verification of sampling and assaying · The verification of significant intersections by either independent · Sampling data has been compared between reports.
or alternative company personnel.
· No verification sampling of the historical assays has been conducted.
· 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 · 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 WGS84, UTM44N.
· Specification of the grid system used.
· 20 historical drill holes have been located in the area during
· Quality and adequacy of topographic control. mapping activities in 2023-2024.
· Some errors were noted in the elevation readings (from 5 - 14 m
errors), these were adjusted to the elevation values of the SRTM topography
over the area.
Data spacing and distribution · Data spacing for reporting of Exploration Results. · Historical drilling grid for the Rulikha deposit: 200 x 100 m for C2
category resources, 400 x 100 m or 300 x 200 m for P1 category.
· Whether the data spacing and distribution is sufficient to establish
the degree of geological and grade continuity appropriate for the Mineral · Geological distribution is sufficient for an exploration target or
Resource and Ore Reserve estimation procedure(s) and classifications applied. preliminary Resource calcluations.
· Whether sample compositing has been applied. · 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 · Samples were reportedly taken for intervals with significant sulphide
possible structures and the extent to which this is known, considering the mineralization.
deposit type.
· The ore body generally dips 10 to 25° to the SW. In some parts of
· If the relationship between the drilling orientation and the the deposit the ore body dips steeper 40. These steeper areas of
orientation of key mineralized structures is considered to have introduced a mineralization are interpreted to be the result of post mineralization
sampling bias, this should be assessed and reported if material. deformation.
· The ore body is cut by NS and EW faults.
Sample security · The measures taken to ensure sample security. · Sample security is unclear and cannot be verified by East Star.
Audits or reviews · The results of any audits or reviews of sampling techniques and data. · No audits were undertaken for this work.
·
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.
· Samples were reportedly taken for intervals with significant sulphide
mineralization.
· The ore body generally dips 10 to 25° to the SW. In some parts of
the deposit the ore body dips steeper 40. These steeper areas of
mineralization are interpreted to be the result of post mineralization
deformation.
· The ore body is cut by NS and EW faults.
Sample security
· The measures taken to ensure sample security.
· Sample security is unclear and cannot be verified by East Star.
Audits or reviews
· The results of any audits or reviews of sampling techniques and data.
· No audits were undertaken for this work.
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 Rulikha polymetallic Deposit is partially located in the eastern
agreements or material issues with third parties such as joint ventures, part of exploration license 1799-EL (the "License"). The license was issued to
partnerships, overriding royalties, native title interests, historical sites, Rudny Resources Limited on 28 July 2022 for initial period of 6 years with a
wilderness or national park and environmental settings. 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), and local landholders, over some areas within the
Licence and the license can be explored under these agreements. Additional
agreements will be required for the Rulikha deposit.
· Some other areas within the Licence are restricted in access due to
hydrogeological constraints. Additional permission will be required to gain
access to drill within these areas.
· 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
1948 1948 Prospecting and exploration at Talovskoye and Openyshevskoye deposits by Identified polymetallic deposits in Rudny Altai, including early recognition
Priirtysh Geological Exploration Party. of Rulikha and Talovskoye potential.
1950-1954 1950-1953 Prospecting and exploration by Shemonaikha Party of Altai Expedition, focusing Confirmed polymetallic mineralization in the Rulikha area, establishing a
on geological mapping and initial drilling. foundation for further exploration.
1955-1963 1954-1962 Geological mapping, drilling, and reserve calculation by Shemonaikha GRP. Delineated Rulikha deposit's geological structure; reserves calculated as of
Consolidated report in 1957 calculated reserves for Rulikhinskoye. 01.01.1957, confirming VMS-polymetallic mineralization (Cu, Pb, Zn).
1968 1968 Geological structure and mineral resource assessment of M-44-57-B, G; Provided regional geological context, supporting Rulikha's placement within
M-44-58-A-v sheets. the Aleysk anticlinorium.
1965-1970 1965-1969 Geological prospecting by Shemonaikha GRP, including geophysical surveys and Refined geological and geophysical understanding of Rulikha, identifying
drilling. ore-hosting structures.
1971 1968-1971 Geological and geophysical work by Priirtyshskaya Party at Rulevsky site. Further delineated Rulikha's mineralization, confirming its association with
Talovskaya-Gerikhovskaya formation contact.
1979 1979 General prospecting at Buzanikhinsky area, adjacent to Rulikha. Identified additional mineralization potential near Rulikha, supporting
regional prospectivity.
1983 1978-1982 Detailed prospecting by Minsk GRP at Rulikhinsko-Vydrikhinsky area; drilling Confirmed extent of Rulikha mineralization, refined ore zone boundaries, and
and geophysical surveys. identified vein-type ores.
1983 1979-1983 Detailed prospecting by Ubin GRP at Talovsko-Rulevsky area, focusing on Positive assessment of Talovskoye; Rulikha flanks showed limited economic
Talovskoye and Rulikha flanks. potential but warranted further study.
1992 1989-1992 Deep drilling (6,785 m), geophysical logging (6,607 m gamma), 737 geochemical Negative assessment for Rulikha deep horizons (to 1000 m); vein-type ores in
samples, 16 core samples; X-ray spectral analysis for Cu, Pb, Zn, Co, Mo. borehole No. 323 (3.60-5.84% Zn) uneconomic. Talovskoye deemed promising with
P1/P2 resources, recommended for further drilling (9,250 m).
1948 1948 Prospecting and exploration at Talovskoye and Openyshevskoye deposits by Identified polymetallic deposits in Rudny Altai, including early recognition
Priirtysh Geological Exploration Party. of Rulikha and Talovskoye potential.
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. · Rulikha 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 zinc rich and copper-zinc rich units
· 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 · See table 1 for drill hole information and significant intercepts
exploration results including a tabulation of the following information for
all Material drill holes: · No material information has been excluded from this report
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.
Data aggregation methods · In reporting Exploration Results, weighting averaging techniques, · Significant intercepts are reported for historical results.
maximum and/or minimum grade truncations (e.g. cutting of high grades) and
cut-off grades are usually Material and should be stated. · No metal equivalents are reported.
· Where aggregate intercepts incorporate short lengths of high-grade · Results for 5 elements are reported: Cu, Pb, Zn, Au, Ag.
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.
Relationship between mineralisation widths and intercept lengths · These relationships are particularly important in the reporting of · The ore bodies are generally concordant to lithology.
Exploration Results.
· Drill holes were generally drilled vertically.
· If the geometry of the mineralisation with respect to the drill hole
angle is known, its nature should be reported. · Reported intercepts are therefore interpreted to be reasonably
representative of true thickness, although this cannot be quantified at this
· If it is not known and only the down hole lengths are reported, there stage of work.
should be a clear statement to this effect (e.g. 'down hole length, true width
not known').
Diagrams · Appropriate maps and sections (with scales) and tabulations of · 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 work.
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 · East star is planning to model the historical results to understand
extensions or depth extensions or large-scale step-out drilling). economic viability. This may be followed by verification drilling and resource
estimation.
· Diagrams clearly highlighting the areas of possible extensions,
including the main geological interpretations and future drilling areas, · Adjacent licenses are under application
provided this information is not commercially sensitive.
· Map of planned and completed drillholes is included in the body text.
Geology
· Deposit type, geological setting, and style of mineralisation.
· Rulikha 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 zinc rich and copper-zinc rich units
· 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.
· See table 1 for drill hole information and significant intercepts
· 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 historical results.
· No metal equivalents are reported.
· Results for 5 elements are reported: Cu, Pb, Zn, Au, Ag.
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.
· Drill holes were generally drilled vertically.
· Reported intercepts are therefore interpreted to be reasonably
representative of true thickness, although this cannot be quantified at this
stage of work.
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 work.
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.
· East star is planning to model the historical results to understand
economic viability. This may be followed by verification drilling and resource
estimation.
· Adjacent licenses are under application
· Map of planned and completed drillholes is included in the body text.
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