Platinum producer Mimosa Mining Company reported a 7 percent decline in first-quarter production after intermittent power supply disruptions and scheduled concentrator maintenance affected operations at its Zvishavane mine.
According to a quarterly production update released by joint-venture partner Implats, Mimosa produced 59,000 ounces of 6E concentrate during the three months ended September 30, 2026, down from 63,000 ounces in the corresponding period last year.
Milled throughput also decreased by 6 percent to 698,000 tonnes from 741,000 tonnes recorded in the prior comparative quarter.
The decline was compounded by a reduction in milled head grade, which fell to 3.33 grams per tonne from 3.61 grams per tonne as mining activities progressed towards the outer limits of the orebody footprint.
Implats said improved metallurgical recoveries helped partially offset the impact of lower grades and throughput. However, unstable electricity supply and planned maintenance work at the concentrator constrained processing volumes during the reporting period.
Despite the weaker start to the 2027 financial year, Implats maintained its production guidance for Mimosa at between 220,000 and 240,000 ounces of 6E concentrate for the full year.
The group also reaffirmed planned sustaining capital expenditure of between US$45 million and US$65 million for the operation during the financial year, underlining its commitment to maintaining production capacity and operational performance.
Mimosa is jointly owned by South African mining companies Implats and Sibanye-Stillwater, each holding a 50 percent stake in the Zimbabwean platinum producer. 