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Ghana
Bibiani Mine

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 Location:
0 km from Bibiani, Ghana

  Address:
Old Mill Area
P.O. Box 98
Bibiani
Ghana
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2030
The Bibiani Mine has completed its commissioning, with the first gold pour announced on July 7, 2022.

Underground mine planning has been initiated, to add 90Koz/y from 2026 and increase LOM to +14years.
Latest NewsAsante Announces Significant Gold Intercepts From Its Near Mine Exploration Program at South Russel and Aboduabo Prospects     January 17, 2023


Owners

Source: p. 2
CompanyInterestOwnership
Government of Ghana 10 % Indirect
Asante Gold Corp. 90 % Indirect
In August 2021, the Company acquired the Bibiani Gold Project in Ghana from Resolute Mining Limited (“Resolute”) through the purchase of all the issued and outstanding common shares of Mensin Bibiani Pty. Ltd, with the Ghanaian Government retaining 10% free carried interest in the mining operations.

Contractors

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Deposit Type

  • Mesothermal
  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The Bibiani deposit is hosted within a thick sequence of fine-grained graded turbidites with localised thin interbeds of fine to medium- grained turbiditic sandstones. The orebody is a mesothermal lode type deposit which is similar to the lode deposits in the Konongo Axim belt hosting the significant Obuasi deposit. The Bibiani orebody geometry is structurally controlled by a steep, north to north-east trending shear corridor 200 - 400m wide, within Lower Birimian sediments and close to the \ eastern contact of the Upper Birimian. The shear zone includes quartz infill as massive veins and quartz stock works. In the widest parts of the orebody, two and locally three individual quartz reefs or lodes can be identified. Two highly graphitic fault zones, historically referred to as pug seams or fissures, are associated with the major shear zone on footwall and hanging wall sides.

In general, the orebody dips east at 60 - 80°, crossing the regional structure at acute angles. At the centre of the mine the orebody alignment is 030 - 035° which changes to around 020° at the northern end of the mine. The strike of the bedding cuts across the strike of the ore body at acute angles. Traditionally the ore body has been divided into a northern and southern part based on the location of the central shaft, which lies on section line 5400N. Despite this the orebody is essentially continuous.

The southern ore zone is around 180m long and consists of a composite vein of qu ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

On February 28, 2022, Open Pit Mining Operations have started, with focus on delivery of ore from the Strauss and Walsh satellite pits. The #1 Cutback at the Main Pit has also started. Refurbishment of mine haulage roads, safety berms, waste dumps and mining benches are advanced. First ore has been delivered to the Run of Mine Pad, more than one month ahead of schedule. The Bibiani Mine plans to pour its first gold in Q3 2022.

First gold poured July 7, 2022. Gold dore’ shipped late July.

• Bibiani will produce 175,000 oz in its first 12 months of operation, 230-280 Koz/ year through 2030.

• 4 stage development of the Main Pit to support mining to +/- 350m depth and +8 years operation. This will access the approximate 2.3 Moz open pit resource.

• The Mining Contractor has been mobilized to deliver +3 Mt/y ore to the process plant, from the open pit mines.
• Exploration continues, with a view to developing satellite deposits & extending open pit mining to +10 years.

Underground mine planning has been initiated, to add 90Koz/y from 2026 and increase LOM to +14years.

Mining will be undertaken by long hole open stoping (LHOS) mining methods. A trade-off study of various LHOS methods was undertaken and the selected mining methods were:

• The main mining method will be LHOS with pillars. This method was applied to the majority of the mining areas, where the stope blocks are less continuous, occur in mu ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits2022
Gold koz  ......  Subscription required
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics2022
Annual processing capacity  ......  Subscription required
Annual ore mining rate  ......  Subscription required
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Reserves at December 31, 2020:
Bibiani Reserves are reported above 2.75g/t cut-off
Bibiani Resources are reported above 2.0g/t cut-off.

CategoryTonnage CommodityGradeContained Metal
Probable 6,400 kt Gold 3.3 g/t 660 koz
Indicated 13,300 kt Gold 3.5 g/t 1,490 koz
Inferred 8,440 kt Gold 3.7 g/t 1,010 koz
Total Resource 21,700 kt Gold 3.6 g/t 2,500 koz

Financials:

Units2019201820172016
Capital expenditures M AUD  ......  Subscription required 9.8   17.7   9.3  



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 20, 2022
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Staff:

Total WorkforceYear
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Fact Sheet 2018
Feasibility Study Report 2018
Quarterly Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Feasibility Study Report 2016
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News:

NewsDate
Asante Announces Significant Gold Intercepts From Its Near Mine Exploration Program at South Russel and Aboduabo Prospects January 17, 2023

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