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  • Last updated

    1:20am on Sep 23, 2019

Mimosa is a shallow underground PGM and base metal mining and processing operation located on the Great Dyke of Zimbabwe, 32km west of the town of Zvishavane, approximately 340 km southwest of Harare, the capital of Zimbabwe. Mimosa is operated as a 50/50 joint venture between Sibanye-Stillwater and Impala Platinum.

We acquired our 50% interest in Mimosa in April 2016 as part of the Aquarius acquisition. On a 50% attributable basis, as at 31 December 2018 Mimosa has 1.84 million oz of 4E PGM and 1.96 million oz of 6E PGM mineral reserves and 6.65 million oz of 4E PGM and 7.04 million oz of 6E PGM mineral resources.

At Mimosa, we’re focused on developing the Mtshingwe Shaft and further evaluating the Mtshingwe Block, extending the Life-of-Mine, stabilizing production profiles at current performance levels and fast-tracking the conversion of mineral resources to mineral reserves.

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    Mining operations have been carried out in the Mimosa area since the 1920’s. We hold a 50% interest in the operations through the Mimosa Mining Company, a 50/50 joint venture with Impala Platinum. We acquired our interest on 12 April 2016 on the closing of our R4.3 billion all-cash offer for Aquarius Platinum.

    Mimosa is a shallow, underground mining operation located in the Wedza subchamber of the Great Dyke of Zimbabwe. The Wedza subchamber is the southernmost of four chambers of the Great Dyke, hosting the economic main sulphide zone from which the PGM and base metals are mined. The orebody is accessed via two shafts, the Wedza shaft and the Mtshingwe Shaft. The Wedza Shaft has been extensively mined; the Mtshingwe Shaft is at the developmental stage.

    Mining takes place less than 200 m below surface, utilising the bord-and-pillar mining method. Ore is processed at a concentrator located on site, at the rate of approximately 227,000 tonnes per month; concentrates are trucked to South Africa for smelting and refining at Impala Platinum facilities. Tailings are disposed of at a storage facility on site.

    The Mimosa Mining Company holds a mining lease over an area of 6,594 ha and related exclusive mining rights therein for nickel, copper, cobalt, gold, silica, chromite and PGMs.

Reference

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