Overview
| Stage | Construction |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
- Cut & Fill
- Post Pillar Cut & Fill
- Longhole open stoping
|
| Processing |
- Calcining
- Flotation
- Concentrate leach
- Solvent Extraction & Electrowinning
- Roasting
|
| Mine Life | 19 years (as of Jan 1, 2018) |
The main shaft construction commenced in December 2019 and the main ramp construction (0ml to 140ml) commenced in January 2020. |
Source:
p. 22, 240, 253, 254
Jinchuan Group International Resources (“Jinchuan International”) is a majority-owned subsidiary of Jinchuan Group and flagship platform for overseas resources development.
Via its subsidiary – Metorex, Jinchuan International owns 75% interest in Ruashi Mining SAS which owns the Musonoi Project. The remaining 25% interest in Ruashi Mining SAS is held by Gécamines S.A.(La Générale des Carrières et des Mines)
Deposit Type
- Breccia pipe / Stockwork
- Sediment-hosted
Summary:
A strike length of 600 m to 700 m has been identified with the deepest drill intersection obtained being 550 m below surface. Mineralisation remains open ended at depth. The mineralisation is typical of that of the Kamoto and KOV Mines with two HG zones.
The mineralised zones consist of talc shales, breccias and siltstones forming part of the meta sedimentary sequence. Copper and cobalt mineralisation is generally in the form of malachite and heterogenite/kolwezite in the oxide portion of the deposit and chalcocite, bornite and carrollite in the deeper sulphide zone. The depth of oxidation is approximately 190 m to 220 m below surface.
The ore body is open ended to depth and no flattening of the dip indicating proximity of the fold closure has been intersected thus far. The solids modelling was extrapolated 50 m east and west of the last drill hole intersection (along strike), and 50 m beyond the last drill hole intersection to depth (down dip).
Mining Methods
- Cut & Fill
- Post Pillar Cut & Fill
- Longhole open stoping
Summary:
The studies indicated that the orebody occurs on the eastern end of the Dilala Syncline and is a blind deposit with high-grade mineralization starting at between 50m and 100m below surface. The orebody has a strike length of 600m to 700m and is open ended at depth below 600m from surface, and will be mined from underground using a long hole stoping mining method and a cut and fill with post pillars mining method.
Processing
- Calcining
- Flotation
- Concentrate leach
- Solvent Extraction & Electrowinning
- Roasting
Flow Sheet:
Summary:
Based on the June 2013 Mintek report, the envisaged flowsheet will probably entail single stage crushing followed by a RoM ball mill and flotation circuit. The optimum grind was found to be 80% -106 µm. A final decision on the flowsheet still needs to be made.
The Musonoi Study concluded that due to high off- mine costs associated with the transport and treatment of Cu and Co concentrates, a preferable option would be to produce a bulk Cu/Co concentrate through a flotation plant. This concentrate could then in the future be combined with the Kinsenda sulphide concentrates in a central roasting plant to produce a calcined product that would be leachable in a conventional SX-EW plant.
Projected Production:
| Commodity | Product | Units | Avg. Annual |
|
Copper
|
Cathode
|
t
| 31,000 |
|
Cobalt
|
Hydroxide
|
t
| ...... |
Operational Metrics:
| Metrics | |
|
Annual mining capacity
| 1,000 kt of ore * |
* According to 2013 study.
Reserves at December 31, 2019:
| Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
|
Proven & Probable
|
Oxide
|
3.4 Mt
|
Copper
|
3 %
|
102 kt
|
|
Proven & Probable
|
Sulphide & Mixed
|
16.9 Mt
|
Copper
|
2.9 %
|
493 kt
|
|
Proven & Probable
|
Total
|
20.3 Mt
|
Copper
|
2.9 %
|
595 kt
|
|
Proven & Probable
|
Oxide
|
3.4 Mt
|
Cobalt
|
1.2 %
|
42 kt
|
|
Proven & Probable
|
Sulphide & Mixed
|
16.9 Mt
|
Cobalt
|
0.8 %
|
141 kt
|
|
Proven & Probable
|
Total
|
20.3 Mt
|
Cobalt
|
0.9 %
|
183 kt
|
|
Measured
|
Oxide
|
4.8 Mt
|
Copper
|
3.1 %
|
146 kt
|
|
Measured
|
Sulphide & Mixed
|
12.7 Mt
|
Copper
|
2.7 %
|
337 kt
|
|
Measured
|
Oxide
|
4.8 Mt
|
Cobalt
|
1 %
|
49 kt
|
|
Measured
|
Sulphide & Mixed
|
12.7 Mt
|
Cobalt
|
0.8 %
|
99 kt
|
|
Indicated
|
Oxide
|
1.2 Mt
|
Copper
|
1.8 %
|
22 kt
|
|
Indicated
|
Sulphide & Mixed
|
13 Mt
|
Copper
|
2.3 %
|
293 kt
|
|
Indicated
|
Oxide
|
1.2 Mt
|
Cobalt
|
0.8 %
|
10 kt
|
|
Indicated
|
Sulphide & Mixed
|
13 Mt
|
Cobalt
|
0.8 %
|
107 kt
|
|
Inferred
|
Oxide
|
1.5 Mt
|
Copper
|
2 %
|
30 kt
|
|
Inferred
|
Sulphide & Mixed
|
11.5 Mt
|
Copper
|
2.2 %
|
257 kt
|
|
Inferred
|
Oxide
|
1.5 Mt
|
Cobalt
|
0.7 %
|
11 kt
|
|
Inferred
|
Sulphide & Mixed
|
11.5 Mt
|
Cobalt
|
0.8 %
|
87 kt
|
|
Total Resource
|
Oxide
|
7.5 Mt
|
Copper
|
2.6 %
|
199 kt
|
|
Total Resource
|
Sulphide & Mixed
|
37.1 Mt
|
Copper
|
2.4 %
|
887 kt
|
|
Total Resource
|
Oxide
|
7.5 Mt
|
Cobalt
|
0.9 %
|
70 kt
|
|
Total Resource
|
Sulphide & Mixed
|
37.1 Mt
|
Cobalt
|
0.8 %
|
293 kt
|
Operating Costs:
| | Units | 2013 |
|
UG mining costs ($/t milled)
|
USD
| 39.7 * |
* According to 2013 study.
Financials:
| | Units | 2016 |
|
Capital expenditures
|
M USD
|
0.9
|
Mine Management:
| Job Title | Name | Profile | Ref. Date |
.......................
|
.......................
|
|
Jun 27, 2020
|
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Staff:
| Employees | Year |
|
|
2019
|
|
|
2018
|
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