Zimbabwe

Mimosa Mine

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Overview

Mine TypeUnderground
StatusActive
Commodities
  • Platinum
  • Palladium
  • Rhodium
  • Copper
  • Nickel
  • Gold
Mining Method
  • Bord-and-pillar
Production Start... Lock
Mine Life... Lock
SnapshotThe Mimosa operation comprises a shallow underground mine, accessed by two decline and one small vertical shafts, and a concentrator.

The US$130 million North Hill project will extend Mimosa’s life-of-mine by circa 10 years to FY2044. The feasibility study was completed and a memorandum of understanding to support project execution is under discussion with the Zimbabwean government. The project will increase life-of-mine at the current production platform and sustain 227,000 tonnes per month into the existing processing plant. Steady-state production from North Hill is forecast for FY2034.

Owners

SourceSource
CompanyInterestOwnership
Sibanye-Stillwater Ltd. 50 % Indirect
Impala Platinum Holdings Ltd. 50 % Indirect
Mimosa Mining Company (PVT) Ltd. (operator) 100 % Direct
In July 2001, Implats acquired 35% in Mimosa, increasing this stake to 50% the following year, with Aquarius acquiring the remaining 50% in Mimosa in the same year. In 2016, Sibanye- Stillwater acquired all the shares which formerly belonged to Aquarius. Mimosa is managed by Mimosa Investments Limited, a Mauritiusbased company, held by Implats and Sibanye-Stillwater, and is a non-managed operation in the Implats portfolio.

Deposit type

  • Magmatic

Summary:

PGM mineralisation at Mimosa is located in four isolated and fault-bounded blocks - from north to south they are the North Hill, South Hill, Mtshingwe Fault Block and Far South Hill mineralised bodies.

Each block is host to a pyroxenite layer known as the P1 pyroxenite layer, overlain by a gabbro layer. The platinum-bearing Main Sulphide Zone (MSZ) is located in the P1 pyroxenite, some 10m below the ultramafic/mafic contact. The MSZ is a continuous layer, 2m to 6m thick, and forms an elongated basin. The mineralised zone strikes in a north-northeasterly trend and dips at about 14° on the margins, flattening towards the central part of the orebody. The MSZ at Mimosa has a well-defined grade profile where peak base metal and PGM values are offset vertically, with palladium dominant towards the base, platinum in the centre and nickel towards the top. The MSZ is visually identified using pyroxene and sulphide mineralisation. Minor faults and dykes are present and although no potholes have been identified, low- grade areas and areas of no mineralisation, or ‘washout channels’, have been intersected.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

Milling equipment has not been reported.

Processing

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Production

CommodityUnits2024202320222021202020192018201720162015
6E (Pt,Pd,Rh,Au,Ir,Ru) koz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe261266259254250
Platinum koz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe122125122120117
Palladium koz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe9799979493
Rhodium koz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1011109.910
Nickel t  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe3,5673,6513,4413,4613,470
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.

Operational metrics

Metrics202320222021202020192018201720162015
Tonnes milled  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe2,814 kt2,802 kt2,729 kt2,641 kt2,586 kt
Annual milling capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe

Production Costs

CommodityUnits20242023202220212020201920182017
Cash costs 6E (Pt,Pd,Rh,Au,Ir,Ru) USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 771 / oz   716 / oz   710 / oz  
Cash costs Platinum USD  ....  Subscribe 1,646 / oz   1,521 / oz   1,511 / oz  
Cash costs Platinum USD -143 / oz **   -13 / oz **   335 / oz **  
All-in sustaining costs (sold) Platinum USD 558 / oz **   626 / oz **  
^ Guidance / Forecast.
** Net of By-Product.

Operating Costs

Currency20232022202120202019201820172016
Total operating costs ($/t milled) USD 92  80  76  70  71  68  67  66  

Financials

Units20242023202220212020201920182017
Capital expenditures (planned) M USD  ....  Subscribe
Capital expenditures M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 49   44   33  
Revenue M  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 4,448  ZAR 3,880  ZAR 3,524  ZAR
Gross profit M  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 773  ZAR 751  ZAR 183  ZAR
Pre-tax Income M 495  ZAR
After-tax Income M  ....  Subscribe 348  ZAR 397  ZAR 393  ZAR
EBITDA M  ....  Subscribe
Book Value M  ....  Subscribe

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 14, 2023

EmployeesContractorsTotal WorkforceYear
...... Subscription required ...... Subscription required ...... Subscription required 2023
...... Subscription required 2022
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...... Subscription required ...... Subscription required ...... Subscription required 2019
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...... Subscription required ...... Subscription required 2017
...... Subscription required ...... Subscription required ...... Subscription required 2016
...... Subscription required ...... Subscription required ...... Subscription required 2015

Aerial view:

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