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Burkina Faso

Bouly Mine

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Overview

Mine TypeOpen Pit
StatusActive
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start... Lock
Mine Life... Lock
SnapshotBouly mine is a part of Bissa-Bouly Operation.

In light of the sanctions and ongoing regulatory actions, Nord Gold PLC's production numbers for the year 2022 are not available.
Related AssetBissa-Bouly Operation

Owners

SourceSource
CompanyInterestOwnership
Government of Burkina Faso 10 % Indirect
Nord Gold plc 90 % Indirect
Bissa Gold SA (operator) 100 % Direct
Nord Gold plc. owns 90% interest in the Bissa and Bouly mines through Bissa Gold SA and the remaining 10% is owned by the government of Burkina Faso.

Deposit type

  • Porphyry
  • Vein / narrow vein

Summary:

The Bissa and Bouly gold deposits all occur within an approximate 90 km NW-SE zone, comprising Birimian volcano-sedimentary rocks of the Boromo greenstone belt. The belt consists of mafic volcanic rock, minor felsic volcanic rock and extensive sedimentary units, intruded by Eburnean granitoids, all of which have undergone incipient to low greenschist facies metamorphism (Huot and Sattran, 1987).

The Bouly deposit, approximately 9 km east of the Bissa-Zandkom corridor, is hosted by shear zones within metamorphosed metavolcanics, diorites and porphyritic diorites. The volcanosedimentary sequence is well foliated, with a NE-SW striking fabric. The meta-volcanics are intruded, and mostly replaced, by later diorite, granodiorite and porphyritic diorite bodies, which are not well foliated except in areas where extensive shearing has occurred. As per the BokenZandkom corridor, two phases of deformation are recognised. The earliest deformation phase is associated with NW striking, moderately SW dipping thrust structures. The second deformation phase is associated with NE striking, steeply SE dipping strike slip structures.

Mineralisation at the Bissa and Bouly deposits is primarily orogenic and structurally controlled, with a secondary lithological control. The most significant mineralised zones are associated with anastomosing networks of quartz and quartz-carbonate veins (or stacked, parallel “arrays” of veins) developed within major brittle-ductile shear zones.

Gold mineralisation is most commonly developed in either quartz-sulphide veining ± carbonates and tourmaline, or disseminated and fracture filling sulphides and magnetite. Across most deposits, the primary sulphide species is pyrite, with minor chalcopyrite and arsenopyrite and very rare native gold.

As is typical in the region, the Bissa and Bouly deposits are variably oxidised. The oxidation sequence typically comprises a thin (0 to 20 m) lateritic layer at surface, which overlies a welldeveloped oxidised saprolitic zone. This normally progresses into a transitional zone, comprising a mixture of saprolite and fresh bedrock, with un-altered fresh rock typically around 50 m to 125 m below surface. Secondary enrichment of gold within the laterite layer is common.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits202120202019201820172016Avg. Annual (Projected)
Gold koz  ....  Subscribe  ....  Subscribe10210712428120
All production numbers are expressed as metal in doré.

Operational metrics

Metrics20202019201820172016
Annual processing capacity  ....  Subscribe
Stripping / waste ratio  ....  Subscribe0.2 0.3 0.5 1.46
Ore tonnes mined  ....  Subscribe11,385 kt9,860 kt8,721 kt3,518 kt
Waste  ....  Subscribe2,409 kt3,403 kt4,200 kt
Total tonnes mined  ....  Subscribe13,794 kt13,262 kt12,921 kt
Tonnes processed  ....  Subscribe7,441 kt7,741 kt7,385 kt3,290 kt
Tonnes processed  ....  Subscribe3,292 kt of ore

Production Costs

CommodityUnits20202019
Total cash costs Gold USD  ....  Subscribe 776 / oz **  
All-in sustaining costs (AISC) Gold USD  ....  Subscribe 860 / oz **  
** Net of By-Product.

Operating Costs

Currency20202019201820172016
Processing costs ($/t milled) USD 5.27  4.78  4.74  4.92  3.15  

Financials

Units2020201920182017
Sustaining costs M USD  ....  Subscribe 8.6   10.8   11.9  
Capital expenditures M USD  ....  Subscribe 15.3   24.1   11.9  
Revenue M USD  ....  Subscribe 144   133.5   156.2  

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 3, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 3, 2023
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Aerial view:

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