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Australia
Geko (Bullabulling) Mine

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 Location:
24 km NW from Coolgardie, Western Australia, Australia

  Address:
Suite 11, 139 Newcastle Street
Perth
Western Australia, Australia
6000
Phone  ...  Subscription required
Fax+61 (08) 9227 0370
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Filings & News

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Overview

StatusInactive / Suspended
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Habrok recommenced mining at Geko on 21 March 2020 and suspended mining in the 30 September 2021 quarter.

Open pit mining ceased in 2021 due to water management issues and a wall failure in the south-west corner of the pit.


Owners

Source: p. 1,2
CompanyInterestOwnership
Bulletin Resources Ltd. 30 % Indirect
Habrok (Geko Pit) Pty Ltd. (operator) 70 % Indirect
Gekogold and Habrok have formed a joint venture on a 30:70 basis on the tenement area outside the Project. Habrok operates the joint venture.

Bulletin, via its wholly owned subsidiary Gekogold, has a 30% interest in the Gekogold Exploration and Production Joint Venture Agreement (Joint Venture) with Habrok whereby it contributes to the Joint Venture via way of cash calls.

Beacon Minerals Limited (ASX: BCN) (“Beacon” or “the Company”) is pleased to advise that the Company has executed an Offer Letter with Geko Pit Pty Ltd (“Geko”) for Beacon to acquire mining lease M15/621 and miscellaneous licence L15/355 (the Tenements) which are 100% owned by Geko.
The Company expects completion of the Acquisition to occur on or around 31 October 2022.

Contractors

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Deposit Type

  • Metamorphic


Summary:

The deposit occurs within mafic lithologies which have been altered and deformed to a sericite-quartzbiote-hornblende schist. This schistose unit directly overlies an ultramafic sequence and gold mineralisaon is hosted within a shear zone formed at or near the contact which is dipping 60° to the south. The mineralisaon orientaon within this package dips approximately 45°south. Deep weathering has produced a laterite profile to approximately 80m depth and includes supergene enriched mineralised zones. Overlying the weathered basement rocks is a 10 20m thick transported alluvium horizon which underlies a layer of un-mineralised Cainozoic sediments. Re-interpretaon of the Geko gold deposit by Mining Plus resulted in the idenficaon of two discrete zones in the main area of mineralisaon called the Main Zone and Hangingwall Zone which are host to the majority of the mineralisaon. The Main Zone extends from the underlying fresh material into the weathered zone above and has a small supergene enriched gold zone at the top. The Hangingwall Zone isolates a local high-grade zone on the hangingwall contact. There are also mulple small mineralised zones of varying size located within the weathering profile. In addion, there is a zone of high-grade mineralisaon that either abuts the base of an alluvium horizon or detaches and runs through the moled clay material beneath the alluvial zone.

The Geko deposit occurs within mafic lithologies which have been altered and deformed to a ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Open pit mining by a mining contractor utilising a conventional drill and blast, load and haul operation.

In the FS, the Geko open pit is planned to be mined as a convenonal drill and blast, load and haul operation. The pit walls are assumed to apply convenonal baer and bench (catch berm) to a depth of ~140m to ~150m. Mining is to reflect a mining bench which is made up of two 2.5m flitches.

Total open pit mine life is 22 months.

October 31 2018, gold ore production has commenced at the Geko Project.

As announced on 17 December 2018, a revised three-stage mine plan for Geko was developed and executed to optimise future mining.

Stage One: Mining of high-grade supergene zone, completed 31 December 2018. The final physical results from Stage 1 were 7,980 tonnes at 5.94g/t Au containing gold of 1,524oz. In addition, 50,200 tonnes at 1.09g/t Au were stockpiled for future toll milling.

Stage two mining of the Geko project commenced in March quarter 2019. This Stage planned to mine 260,000 tonnes of ore at 2.23 g/t Au for total contained ounces 18,640 oz. The Stage envisaged completion of the internal West pit first and subject to its success, followed by the mining of the internal East pit. The West pit did not produce the tonnage and grade as predicted by the model due to mine dilution and underperformance of the oxide zone to enable sales to Northern Star Resources which required a minimum head grade of 2.75 g/t. ........


Crushing and Grinding


Processing

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Summary:

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Production:
First gold ore production from the Geko open pit operations commenced in late October 2018.

CommodityUnits2018
Gold oz 1,524
All production numbers are expressed as metal in ore.
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Operational Metrics:

Metrics2018
Ore tonnes mined 58,180 t
Tonnes processed 7,980 t

Reserves at December 1, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 1,238 kt Gold 1.69 g/t 67.3 koz
Probable 340 kt Gold 2.25 g/t 24.6 koz
Proven & Probable 1,578 kt Gold 1.81 g/t 91.9 koz
Measured 1,745 kt Gold 1.6 g/t 89 koz
Indicated 690 kt Gold 1.7 g/t 37 koz
Inferred 120 kt Gold 2.6 g/t 10 koz

Financials:

Units2018
Revenue M AUD 1.7  



Heavy Mobile Equipment:

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Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Press Release 2018
Press Release 2018
Press Release 2018
Quarterly Report 2018
Quarterly Report 2018
Technical Report 2018
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