Lonmin stopped filing independent production results in 2019, the year Sibanye-Stillwater completed its acquisition of the company and absorbed Lonmin's Marikana mining right into its own South Africa platinum-group-metal (PGM) portfolio. That portfolio, which now includes the former Lonmin ground, produced 1,724,778 ounces of 4E metal (platinum, palladium, rhodium and gold) in 2025, according to Sibanye-Stillwater's 2025 reporting suite. Readers searching for Lonmin today are almost always asking who owns the old Marikana mine and what it produces now, rather than looking for a still-listed company, so this page answers both: Lonmin's ownership history, what Marikana reports under Sibanye-Stillwater, and which accreditation now covers its concentrate.
What Is Lonmin?#
Lonmin was a South African-focused platinum producer incorporated in the United Kingdom and listed on the London Stock Exchange and the Johannesburg Stock Exchange until Sibanye-Stillwater completed its acquisition of the company in June 2019, absorbing Lonmin's Marikana mining right into its own operations. Sibanye-Stillwater's South Africa PGM operations, which now include that Marikana ground, produced 1,724,778 ounces of 4E platinum-group metal in 2025, a total DailyPlatinum tracks within the wider platinum group metals market alongside every other named producer. Marikana itself carries 18.8 million ounces of 4E mineral reserves on an 80.64%-owned basis, per Sibanye-Stillwater's business overview, the largest single reserve base among the group's three South African PGM assets. Lonmin's own listings ended when the acquisition completed, and no independent Lonmin production, ownership or financial disclosure has been published since.
| Field | Value |
|---|---|
| Former legal name | Lonmin Plc |
| Former listings | London Stock Exchange; Johannesburg Stock Exchange (both inactive since 2019) |
| Current status | Not independently listed; absorbed into Sibanye-Stillwater |
| Successor operation | Marikana, Sibanye-Stillwater (Western Bushveld, South Africa) |
| Marikana ownership | 80.64%, Sibanye-Stillwater |
| Marikana 4E mineral reserves | 18.8 million ounces |
| Sibanye-Stillwater SA PGM 4E output, 2025 | 1,724,778 oz |
Ownership and Corporate Structure#
Sibanye-Stillwater holds an 80.64% interest in the Marikana operation that succeeded Lonmin, according to the company's business overview, with the remaining minority interest sitting outside Sibanye-Stillwater's own reporting. Lonmin itself carried no single disclosed controlling shareholder in DailyPlatinum's sources before the 2019 acquisition, and its entire ownership question is now superseded by Sibanye-Stillwater's stake in Marikana, covered in full under Historical Status and Successor below.
| Owner | Stake | Since |
|---|---|---|
| Sibanye-Stillwater | 80.64% | June 2019 (Marikana operation) |
Historical Status and Successor#
Lonmin ceased to exist as an independent, separately listed PGM producer in June 2019, when Sibanye-Stillwater completed its acquisition of the company and absorbed its Marikana mining right into its own South Africa PGM portfolio. The former Lonmin ground continued mining and processing under Sibanye-Stillwater's ownership, reported alongside the group's other Western Bushveld assets, Rustenburg (74% owned, 9.3 million ounces of 4E reserves) and Kroondal (toll-treated since September 2024), rather than filed as a stand-alone entity. Marikana today mines conventional breast stopes with a minimum 110 cm mining width and an average stope width of about 1.4 m, and Sibanye-Stillwater is developing an E4 mechanised bord-and-pillar project there targeting 2.0 to 2.4 m stoping widths, per the company's Marikana Technical Reporting Standard summary dated 31 December 2025. Lonmin's pre-2019 production, reserve and ownership disclosures are not restated here because Sibanye-Stillwater does not report Marikana's results on a stand-alone, Lonmin-branded basis, and DailyPlatinum's sources do not establish a Marikana-only annual production split separate from the company's combined South Africa PGM total.
PGM Refining and Accreditation#
Sibanye-Stillwater refines the former Lonmin's Marikana concentrate through its own Western Platinum (PTY) Limited entity, which the London Platinum and Palladium Market carries on its Good Delivery Lists for both platinum and palladium. Marikana's precious-metals refining sits inside Sibanye-Stillwater's wider Southern Africa PGM processing chain, alongside the group's base metals refinery at the same complex, rather than under any separate, Lonmin-branded accreditation, and Sibanye-Stillwater itself holds LPPM Associate Member status.
Where Lonmin Fits in the PGM Market#
On a group-output basis, Sibanye-Stillwater, the company that absorbed Lonmin, ranks fourth among the major PGM producers in DailyPlatinum's producer ranking table, behind Implats, Valterra Platinum and Nornickel, each reporting on its own metal basket. Sibanye-Stillwater's 2025 figure combines 1,724,778 ounces of 4E metal from its South Africa operations, which include the former Lonmin Marikana asset, with 284,069 ounces of 2E metal from its US operations, two bases that should not be added together or compared directly against a competitor's single-basket total. DailyPlatinum gives no investment recommendation on Sibanye-Stillwater or the defunct Lonmin; this page exists for the production and ownership record, not as a stock call.
Other PGM Producers#
DailyPlatinum covers other PGM producers with their own production and ownership pages, including:
- Sibanye-Stillwater, Lonmin's successor and the operator of Marikana today
- Valterra Platinum, the second-ranked producer on DailyPlatinum's table by refined 5E+Au output
- Northam Platinum, a mid-tier South African 4E producer
Lonmin FAQ#
Who owns Lonmin today?#
Sibanye-Stillwater owns and operates the former Lonmin's Marikana mining right, holding an 80.64% interest in the Marikana operation itself, according to the company's business overview; Lonmin ceased to exist as an independently owned company when the acquisition completed in June 2019.
Is Marikana mine still operating?#
Yes, Marikana continues to operate under Sibanye-Stillwater's ownership, contributing to the 1,724,778 ounces of 4E platinum-group metal that the company's South Africa PGM operations produced in 2025.
What do they mine at Marikana?#
Marikana produces platinum-group metals on a 4E basis (platinum, palladium, rhodium and gold), refined through Sibanye-Stillwater's own Western Platinum (PTY) Limited entity.