Mimosa mine
 | This articleneeds additional citations forverification.(October 2022) |
| Location | |
|---|---|
  Mimosa mine | |
| Midlands Province | |
| Country | Zimbabwe |
| Coordinates | 20°19′40.44″S29°49′31.08″E/ 20.3279000°S 29.8253000°E |
| Production | |
| Products | platinum |
TheMimosa mineis a large underground mine located in the southern part ofZimbabwein theZvishavane DistrictofMidlands Province.Mimosa was the firstplatinummine in theGreat Dykeof Zimbabwe.[1]It had, as of 2012,platinumreserves estimated at 7.9 millionozsofplatinum.[2]The mine produces around 120,000 oz of platinum/year.[2]
History
[edit]1. 1926 - 60oz extracted from oxides. 2. 1966 - 2 vertical shafts sunk – trial mining – 40 000 t processed. 3. 1971 - Operations suspended. 4. 1975 - Blore Shaft established – 90 000 t processed. 5. 1978 - Operations suspended. 6. 1990 - Bulk sample to Mintek for test work. 7. 1990/94 - Reserve estimates and feasibility studies completed. 8. 1995 - Current operations started @ 212tpd. 9. 2003 - Current process – 4050tpd.
Ownership
[edit]Mimosa is wholly owned by Mimosa Investments Limited, a Mauritius-based company jointly held by Implats and Sibanye-Stillwater in a 50:50 joint-venture.[2]
Geology
[edit]The Mimosa Mine is located on the Wedza Geological Complex in the Zimbabwean Great Dyke east ofBulawayo.[3]
Expansion summary
[edit]1. Capital cost US$38.1million 2. Funding – US$30 million Implats equity – Operational flows 3. Mill commission – Nov 2002 4. Full mill throughput – Jan 2003 5. Full mining tonnage – Sept 2003
Mineral processing
[edit]1. Design from Mintek test work and past operations 2. 3 stage crushing 2MF circuit 4e recoveries – 80.6% 3. Produce final concentrate 4. Road transport concentrate to Implats 5. Long-term concentrate off take agreement
Notes and references
[edit]- ^Nyoni, Mthandazo (5 October 2022)."Mimosa Mine mulls US$100m shaft expansion".Newsday.Archivedfrom the original on 5 October 2022.
- ^abc"Mimosa".Mineral Resource and Mineral Reserve Statement 2012.financialresults.co.za. 2012. Archived fromthe originalon 30 December 2014.
- ^Prendergast, M. D. (1991). "The Wedza–Mimosa platinum deposit, Great Dyke, Zimbabwe: layering and stratiform PGE mineralization in a narrow mafic magma chamber".Geological Magazine.Vol. 128, no. 3. pp. 235–249.doi:10.1017/S0016756800022081.