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Cote d'Ivoire
Séguéla (Seguela) Mine

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 Location:
19 km NW from Séguéla, Cote d'Ivoire

  Regional Office:
Commune de Worofla
Abidjan
Cote d'Ivoire
06 BP 1967
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  • Geology
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life8.6 years (as of Jan 1, 2021)
Fortuna Silver Mines Inc. is pleased to announce that the first gold has been poured at the Séguéla Mine, in Côte d'Ivoire. The first pour took place May 24, as the mine transitions from commissioning to the ramp-up phase.


Owners

Source: p. 13,14,54
CompanyInterestOwnership
Government of Côte d’Ivoire 10 % Indirect
Fortuna Silver Mines Inc. 90 % Indirect
On July 2, 2021, the Fortuna Silver Mines Inc. (Company) acquired all of the issued and outstanding common shares of Roxgold Inc. (“Roxgold”). Through the completion of the acquisition, the Company acquired the Séguéla advanced exploration project.

The non-controlling interest represents a 10% interest in the legal entities that own the Séguéla property, by the Côte d’Ivoire government.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Orogenic


Summary:

The deposits at the Séguéla Project are considered orogenic lode style systems. The Antenna, Agouti and Boulder deposits are hosted by brittle-ductile quartz albite vein stockworks, often associated with flow banded rhyolite units or porphyritic intrusives. The Ancien and Koula deposits are hosted by rittle-ductile quartz and quartz carbonate vein networks associated with strongly to intensely sheared tholeiitic basalt.

Antenna Deposit
The Antenna deposit occurs within a greenstone package that comprises (west to east) an ultramafic hangingwall, which isin presumed fault contact with an interlayered package of felsic volcaniclastic rocks and flow banded rhyolitic units, which are then in contact with a mafic (basaltic) footwall unit.

The Antenna gold deposit is a brittle-ductile quartz-albite vein stockwork predominantly contained within the flow banded rhyolite units. The stockwork lode varies in width roughly in proportion with the widths of the rhyolitic units which host it (approximately 3–40 m) and extends over a strike length of approximately 1,350 m. Stockwork veins which host mineralisation show two principal orientations; steep east-dipping and steep west-dipping. Veins in the steep west-dipping orientation range from being ptygmatically folded to undeformed, while veins in the east-dipping direction may be variably boudinaged to undeformed. This evidence suggests syn-deformational emplacement of the vein sets during west over east movement ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Séguéla Gold Project will consist of the simultaneous exploitation of the Antenna deposit and the satellite deposits at Koula, Ancien, Agouti, and Boulder. The overallstrategy isto have production from these satellite deposits complement the production from Antenna.

A conventional open pit mining method will be utilized for the Séguéla Gold Project with no free digging assumed for any of the weathering zones. All material will be mined via drilling and blasting activities, followed by conventional truck and shovel operations within the pits for movements of ore and waste material. Mining of benches is proposed using 5.0 m benches done in two 2.5 m flitches.

Mining operations will occur year-round with Roxgold engaging a mining contractor for initial operations, before switching to an owner mining arrangement after 3.5 years. A common pool of equipment will be used and scheduled across all active pits so that movement between the pits is minimized and consumables and spare parts are shared within the fleet.

A total of fourteen mining stages were designed and scheduled for the Séguéla Gold Project, consisting of individual pits or pit stages within a final pit design. Consideration for pit stages was for planning and scheduling practicality purposes. The schedule utilizes the pit and phase designs and stockpiling strategy to fill the mill at 1.25 million tonnes per annum (“Mtpa”) initially and then increasing to 1.57 Mtpa in year 3.


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnitsAvg. Annual (Projected)LOM (Projected)
Gold oz 120,0001,028,000
All production numbers are expressed as metal in doré.


Reserves at December 31, 2022:
Mineral Reserves for Séguéla are reported constrained within optimized pit shells at an incremental cut-off grade of 0.54 g/t Au for Antenna, 0.55 g/t Au for Agouti, 0.55 g/t Au for Boulder, 0.56 g/t Au for Koula and 0.56 g/t Au for Ancien deposits based on an assumed gold price of US$1,500/oz, metallurgical recovery rate of 94.5%, mining cost of US$2.87/t for Antenna, US$2.74/t for Agouti, US$2.81/t for Boulder, US$2.85/t for Koula and US$2.93/t for Ancien.

Mineral Resources for Séguéla are reported in situ at a cut-off grade of 0.3 g/t Au for Antenna, 0.45 g/t Au for Sunbird and 0.5 g/t Au for the other satellite deposits, based on an assumed gold price of US$1,700/oz and constrained within preliminary pit shells.

CategoryTonnage CommodityGradeContained Metal
Probable 12,100 kt Gold 2.8 g/t 1,088 koz
Indicated 7,071 kt Gold 2.3 g/t 523 koz
Inferred 5,708 kt Gold 3.33 g/t 610 koz


Water Supply
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Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Ref. Date
Dozer ....................... Subscription required Existing Leased Dec 19, 2022
Dozer (crawler) ....................... Subscription required ....................... Subscription required Existing Leased Feb 1, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
Excavator ....................... Subscription required 230 tons ....................... Subscription required Existing Leased Feb 1, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
Excavator 50 tons ....................... Subscription required Existing Leased Feb 1, 2023
Excavator 95 t ....................... Subscription required Existing Leased Dec 19, 2022
Grader ....................... Subscription required Existing Leased Dec 19, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
Loader (FEL) ....................... Subscription required ....................... Subscription required Existing Leased Feb 1, 2023
....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
Truck (fuel / lube) ....................... Subscription required Existing Leased Dec 19, 2022
Truck (haul) ....................... Subscription required ....................... Subscription required Existing Leased Feb 1, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
Truck (haul) 100 t ....................... Subscription required Existing Leased Dec 19, 2022
....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased May 26, 2021
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 21, 2023
....................... Subscription required ....................... Subscription required Subscription required May 26, 2021
....................... Subscription required ....................... Subscription required Subscription required May 26, 2021
....................... Subscription required ....................... Subscription required Subscription required Mar 21, 2023
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Corporate Filings & Presentations:

DocumentYear
Press Release 2023
Press Release 2023
Year-end Mineral Reserves 2023
Corporate Presentation 2022
Corporate Presentation 2022
Financial Review 2022
Management Discussion & Analysis 2022
Press Release 2022
Press Release 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Subscription required - Subscription is required.

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