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DRC
Musonoi Project

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 Location:
0 km W from Kolwezi, DRC

  Project Contacts:
Ruashi Mine Site, Luano
Lubumbashi
DRC
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Overview

StageConstruction
Mine TypeUnderground
Commodities
  • Copper
  • Cobalt
Mining Method
  • Cut & Fill
  • Post Pillar Cut & Fill
  • Longhole open stoping
Processing
  • Calcining
  • Flotation
  • Concentrate leach
  • Solvent Extraction & Electrowinning
  • Roasting
Mine Life19 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.


Owners

Source: p. 22, 240, 253, 254
CompanyInterestOwnership
Gécamines S.A 25 % Indirect
Jinchuan Group International Resources Co. Ltd. 75 % Indirect
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.


Crushing and Grinding


Processing

  • Calcining
  • Flotation
  • Concentrate leach
  • Solvent Extraction & Electrowinning
  • Roasting

Flow Sheet: Subscription required

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:

CommodityProductUnitsAvg. Annual
Copper Cathode t 31,000
Cobalt Hydroxide t  ......  Subscription required

Operational Metrics:

Metrics
Annual mining capacity 1,000 kt of ore *
* According to 2013 study.

Reserves at December 31, 2019:

CategoryOreTypeTonnage CommodityGradeContained 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:

Units2013
UG mining costs ($/t milled) USD 39.7 *
* According to 2013 study.

Financials:

Units2016
Capital expenditures M USD  ......  Subscription required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 27, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2019
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
Other 2013
Subscription required - Subscription is required.

Aerial view:

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