Overview
Stage | Production |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 2026 |
Perseus Mining have successfully integrated ore from satellite deposits at Fimbiasso and Bagoé into Sissingué operation, which has effectively prolonged its lifespan until at least March 2026.
Perseus completed construction of infrastructure required to support mining ore from the satellite Fimbiasso East and West pits in the first half of FY23. Mining commenced at Fimbiasso East following this. The first ore from the Fimbiasso pits was transported to the Sissingué mill for processing in late March 2023.
Work to obtain an Exploitation Permit (“EP”) covering the Bagoé exploration permit area continued in FY23. Perseus has lodged all documentation required for assessment of its application for an EP for the Bagoé Project with the Ivorian Department of Mines, Petroleum and Energy and it is currently being assessed. |
Source:
p. 15
Company | Interest | Ownership |
Société Minière de Côte d'Ivoire SARL
|
4 %
|
Indirect
|
Government of Côte d’Ivoire
|
10 %
|
Indirect
|
Perseus Mining Ltd.
|
86 %
|
Indirect
|
Perseus Mining Côte d’Ivoire S.A.
(operator)
|
100 %
|
Direct
|
Perseus owns an 86% interest in Sissingué, with a 10% free carried interest held by the Ivorian government and 4% owned by local interests.
Perseus owns a 86% interest in Perseus Mining Côte d’Ivoire SA, owner of Sissingué Gold Mine.
Contractors
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Deposit Type
- Orogenic
- Vein / narrow vein
Summary:
Gold deposits at Sissingué are orogenic, greenstone hosted.
The Sissingué Gold Mine main pit mineralisation is structurally controlled and mainly hosted within a granitic stock associated with a network of quartz-carbonate veins and veinlets with associated pyrite and arsenopyrite dissemination. Gold-bearing veins have a dominant NNW to NS trend and are steeply dipping. Disseminated mineralisation is also located in the alternation envelops of the mineralised quartz veins.
Additional mineralisation is seen within interconnecting mineralised felsic dyke complexes that propagate from the main granite stock. These mineralised felsic dyke complexes, also trending NNW, host the mineralisation for the additional pits in the area, namely Binkadi, Bagoé, Western Arm and Boribana.
The Sissingué Deposit occurs in a strongly deformed Birimian greenstone belt intruded by quartz-feldspar felsic dykes and granitoid bodies. Gold mineralisation at Sissingué is associated with the felsic dykes and small granitoid (tonalite) bodies that cross-cut sedimentary rocks. Subsequent hydrothermal activities and metasomatism of the granitoids has led to a sericite-carbonate alteration within the intrusive and the more permeable horizons (sandstones and conglomerates) of the sedimentary rocks, and a low to moderate grade disseminated gold mineralisation. Late-stage high grade Au-As-quartz-carbonate veins exploited the altered and brittle portions of the intrusive and s ........
Summary:
The chosen method for the Open Pit Ore Reserves is conventional open pit mining utilising hydraulic excavators and trucks, mining bench heights of 5 metres with 2.5 metre flitches to minimise ore loss and waste rock dilution.
Overall pit slopes are 30 to 50 degrees inclusive of berms spaced at between 5 and 20 metres vertically and berm widths of 4 to 7 metres.
Pit ramps have been designed for a 40 tonne ADT truck fleet and are set at 17 metres (dual lane) to 11 metres (single lane).
Vertical mining advance has been capped based on Perseus’s operating experience.
Minimum mining width of 40 metres was generally applied to the pit cutback designs.
Ore from Fimbiasso pits will be trucked to Sissingué with a maximum limit of 80 kt/month and from Bagoé pits will be trucked at a maximum limit of 60 kt/month.
The sources of ore to be processed at Sissingué are SGM, Fimbiasso and Bagoé deposits. Each deposit consists of multiple pits and the ore feed will be supplemented with stockpiles at SGM. Ore from Fimbiasso and Bagoé will be stockpiled temporarily on site then transported to Sissingué for process plant feed as per milling schedule. Waste material will be taken to the waste dump located near the pits.
Gold production in FY23 will mainly be derived from ore sourced from Fimbiasso deposit, oxide ore from SGM satellite deposits and existing stockpiles at SGM. Meanwhile, the pre-strip in the SGM main p ........
Source:
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Flow Sheet:
Summary:
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Source:
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Reserves at June 30, 2023:
Ore Reserves estimate: 0.4 g/t gold cut-off applied to in situ material at Sissingué deposits, 8 0.8 g/t gold cut-off applied to Fimbiasso, 0.8 g/t gold cut-off applied to oxide, 1.0 g/t applied to transition, 1.0 g/t applied to fresh (Antoinette, Juliette), 1.2 g/t applied to fresh (Veronique).
Sissingué Mineral Resources comprise the remaining in situ mineralisation at the Sissingué mine, Fimbiasso East and West deposits, and mineralisation at the Antoinette, Juliette, and Veronique deposits at the Bagoé Project. These Mineral Resources also include material on stockpiles at Sissingué mine as at 30 June 2023.
Mineral Resources estimate: variable gold grade cut-offs for each material type, ranging from 0.40 g/t to 1.05 g/t at Sissingué deposits, from 0.80 g/t to 1.50 g/t at Fimbiasso deposits and from 1.00 g/t to 3.00 g/t at Bagoé deposits.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
2.7 Mt
|
Gold
|
1.72 g/t
|
149 koz
|
Probable
|
1.5 Mt
|
Gold
|
2.04 g/t
|
98 koz
|
Proven & Probable
|
4.2 Mt
|
Gold
|
1.83 g/t
|
247 koz
|
Measured
|
3.5 Mt
|
Gold
|
1.63 g/t
|
182 koz
|
Indicated
|
2.4 Mt
|
Gold
|
1.87 g/t
|
144 koz
|
Measured & Indicated
|
5.9 Mt
|
Gold
|
1.73 g/t
|
326 koz
|
Inferred
|
0.3 Mt
|
Gold
|
1.8 g/t
|
15 koz
|
Corporate Filings & Presentations:
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