Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
- Longhole stoping
- Shrinkage stoping
- Transverse stoping
- Longitudinal stoping
- Cemented backfill
|
| Production Start | ...  |
| Mine Life | 2024 |
The Yaramoko Mine Complex consists of the operating 55 Zone underground mine, the Bagassi South underground mine (which includes the QV’ lode, consisting of QV QV’ and QV1), and planned open pit mining operations at the 109 Zone and the 55 Zone.
The 55 Zone open pit is to be mined at the completion of the 55 Zone underground mine. The 109 Zone open pit mine is to be mined concurrently with the 55 Zone and Bagassi South underground. Mining of the 55 Zone open pit will only commence at the conclusion of underground mining due to the need to remove certain key surface infrastructure associated with the underground mine.
Underground mining continues from 2023 to 2024 and open pit mining commences in 2024 for 109 Zone and 2025 for 55 Zone. |
Source:
p. 12
| Company | Interest | Ownership |
|
Government of Burkina Faso
|
10 %
|
Indirect
|
|
Fortuna Silver Mines Inc.
|
90 %
|
Indirect
|
|
Roxgold SANU S.A.
(operator)
|
100 %
|
Direct
|
The Yaramoko Gold Mine is operated by Roxgold Sanu S.A., The remaining 10 percent interest held by the State of Burkina Faso, Roxgold SANU S.A. is the principal subsidiary of the Fortuna Silver Mines.
Contractors
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Deposit Type
- Orogenic
- Vein / narrow vein
- Hydrothermal
Summary:
Primary gold deposits in Burkina Faso occur within the Paleoproterozoic Birimian terrain. Mineralization was synchronous with regional metamorphism and deformation. Gold deposits found within the Birimian greenstone belts of the West African shield are typically late orogenic hydrothermal deposits that exhibit a strong relationship with regional arrays of major shear zones.
The gold mineralization is typically associated with an organized network of quartz veins containing subordinate amounts of carbonate, tourmaline, sulphides, and native gold. In these deposits, the gold is typically free milling. Alternatively, gold mineralization can also be associated with disseminated sulphides in strongly deformed alteration zones.
Gold mineralization is related to regional arrays of alteration and deformation zones, commonly located at major lithological discontinuities. The local controls on the distribution of the gold mineralization are structural and lithological.
The gold mineralization found at the 55 Zone and Bagassi South deposits is associated with shear hosted low sulphide quartz veins typically associated with the contact between local volcanic and granitic intrusive units and is free milling in both the oxidized and fresh rock zones. The weathering profile over the deposit is shallow and ranges from approximately 10 m to 40 m.
Mineralization
Gold is the main mineralization of economic interest found on the Yaramoko Gold Mi ........
Mining Methods
- Longhole stoping
- Shrinkage stoping
- Transverse stoping
- Longitudinal stoping
- Cemented backfill
Summary:
Mining operationsfor the Yaramoko Gold Mine are comprised of the existing 55 Zone and Bagassi South underground mines, and the 55 Zone and 109 Zone open pit mines.
The 55 Zone open pit is to be mined at the completion of the 55 Zone underground mine, which includes the mining of near surface mineralization remaining in the crown pillar and remnant mineralization from underground. The 109 Zone open pit mine, located 1.2 km north of the current Yaramoko processing plant, is to be mined concurrently with the 55 Zone and Bagassi South underground with production planned to commence in the first quarter of 2024 with mine development works to be completed throughout 2023. Mining of the 55 Zone open pit will only commence at the conclusion of underground mining due to the need to remove certain key surface infrastructure associated with the underground mine.
Underground mining continues from 2023 to 2024 and open pit mining commences in 2024 for 109 Zone and 2025 for 55 Zone. Open pit mining for 109 Zone is scheduled to commence in January 2024 and 55 Zone in February 2025.
Mining Method – 55 Zone and Bagassi South QV1
Longitudinal longhole stoping with delayed cemented rockfill is the primary mining method adopted for both 55 Zone mine and Bagassi South QV1. A longitudinal stope mining sequence, along strike from vein extremities retreating to a central access in an east and west direction. Other than sill pillar stopes, up holes are drilled to ........
Source:
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Flow Sheet:
Summary:
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Reserves at December 31, 2022:
Mineral Reserves for Yaramoko are reported at a cut-off grade of 1.26 g/t Au for the 55 Zone open pit, 0.73 g/t Au for the 109 Zone open pit, 4.1 g/t Au for 55 Zone and Bagassi South QV underground (SLS), 3.1 g/t Au for Bagassi South QVP (Shrinkage) based on an assumed gold price of US$1,600/oz.
Yaramoko Mineral Resources are reported in situ at a gold grade cut-off grade of 0.9 g/t Au for the 55 Zone open pit, 0.5 g/t Au for the 109 Zone open pit, and 2.9 g/t Au for underground (55 Zone and Bagassi South), based on an assumed gold price of US$1,700/oz.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
123 kt
|
Gold
|
3.42 g/t
|
13 koz
|
|
Probable
|
1,039 kt
|
Gold
|
6.19 g/t
|
207 koz
|
|
Proven & Probable
|
1,161 kt
|
Gold
|
5.89 g/t
|
220 koz
|
|
Measured
|
86 kt
|
Gold
|
6.41 g/t
|
18 koz
|
|
Indicated
|
374 kt
|
Gold
|
5.97 g/t
|
71 koz
|
|
Measured & Indicated
|
460 kt
|
Gold
|
6.05 g/t
|
89 koz
|
|
Inferred
|
141 kt
|
Gold
|
5.51 g/t
|
25 koz
|
Pipelines and Water Supply
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Corporate Filings & Presentations:
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