Operating highlights | 20231 | 2024E1 |
---|---|---|
Tonnes milled (000) | 532 | 435 |
Gold production (koz) | 117.7 | 105 – 119 |
AISC2,3,4 (US$/oz Au) | 1,499 | 1,220 – 1,320 |
Geology and mineralization
The north-northeast-trending Boni shear zone divides the Yaramoko concession between the predominantly Houndé volcanic and volcaniclastic rock to the west and the Diébougou granitoid domain composed predominantly of granitic rock with minor volcanic rock to the east. The main lithological units are mafic volcanic rocks, felsic intrusions, and late dolerite dikes.
This region is considered prospective for orogenic gold deposits, which typically exhibit a strong relationship with regional arrays of major shear zones. The largest granitic intrusion found on the Yaramoko concession is host to both the 55 Zone and Bagassi South Zone gold deposits. Both deposits are set on the eastern margin of the intrusive in the footwall of the Yaramoko shear along conjugated dextral faults located in extensional position to the regional shear zone. The bulk of the gold mineralization occurs in dilatational segments of the shear zones where quartz veins are thicker and exhibit greater continuity.
Mineral reserves
0.9 million tonnes
averaging 7.9 g/t Au containing 0.2 Moz Au
Refer to Mineral Reserves and Resources table below for full disclosure
Mineral reserves and resources
Contained Metal | ||||
---|---|---|---|---|
Property | Classification | Tonnes (000) | Au (g/t) | Au (koz) |
Mineral Reserves – Proven and Probable | ||||
55 Zone Underground | ||||
Proven | 0 | |||
Probable | 509 | 9.56 | 157 | |
Proven + Probable | 509 | 9.56 | 157 | |
55 Zone Open Pit | ||||
Proven | ||||
Probable | 83 | 6.44 | 17 | |
Proven + Probable | 83 | 6.44 | 17 | |
109 Zone Open Pit | ||||
Proven | ||||
Probable | 120 | 2.04 | 8 | |
Proven + Probable | 120 | 2.04 | 8 | |
Bagassi South QV Prime Underground | ||||
Proven | ||||
Probable | 120 | 8.44 | 33 | |
Proven + Probable | 120 | 8.44 | 33 | |
Bagassi South Underground | ||||
Proven | ||||
Probable | 10 | 4.44 | 1 | |
Proven + Probable | 10 | 4.44 | 1 | |
Stockpiles | ||||
Proven | 21 | 5.44 | 4 | |
Probable | 0 | |||
Proven + Probable | 21 | 5.44 | 4 | |
Combined | ||||
Proven | 21 | 5.44 | 4 | |
Probable | 842 | 7.96 | 216 | |
Proven + Probable | 863 | 7.90 | 219 | |
Mineral Resources – Measured and Indicated | ||||
Z55 Underground | ||||
Measured | 18 | 4.33 | 2 | |
Indicated | 225 | 3.30 | 24 | |
Measured + Indicated | 243 | 3.38 | 26 | |
Measured | 0.00 | |||
Indicated | 54 | 3.67 | 6 | |
Measured + Indicated | 54 | 3.67 | 6 | |
Z109 Open Pit | ||||
Measured | 0.00 | |||
Indicated | 102 | 1.34 | 4 | |
Measured + Indicated | 102 | 1.34 | 4 | |
Bagassi South QV Prime Underground | ||||
Measured | 0.00 | |||
Indicated | 63 | 2.80 | 6 | |
Measured + Indicated | 63 | 2.80 | 6 | |
Bagassi South Underground | ||||
Measured | 0.00 | |||
Indicated | 8 | 2.21 | 1 | |
Measured + Indicated | 8 | 2.21 | 1 | |
Combined | ||||
Measured | 18 | 4.33 | 2 | |
Indicated | 452 | 2.82 | 41 | |
Measured + Indicated | 469 | 2.87 | 43 | |
Mineral Resources – Inferred | ||||
Z55 Underground | Inferred | 53 | 3.02 | 5 |
Z55 Open Pit | Inferred | 21 | 4.03 | 3 |
Z109 Open Pit | Inferred | 5 | 1.02 | 0 |
Bagassi South QV Prime Underground | Inferred | 56 | 3.56 | 6 |
Bagassi South Underground | Inferred | 24 | 4.63 | 4 |
Combined | Inferred | 159 | 3.52 | 18 |