Brazil Alumina (MRN / Alumar) — aluminum mine
Data compiled from public filings — information only, not investment advice. AI‑assisted; see methodology.
Project information
As at 30 June 2025
Description
As at 30 June 2025
Non-operated integrated bauxite and alumina interest: the Mineracao Rio do Norte (MRN) bauxite mine at Porto Trombetas in northern Brazil (South32 interest 33%) and the Alumar alumina refinery at Sao Luis. Shallow lateritic bauxite plateaus of the Alter do Chao formation mined by conventional open pit; ore is washed on site and shipped to Alumar for Bayer-process refining. Operations commenced in the 1980s. Production Target based on Proved (16%) and Probable (2%) Ore Reserves and Measured/Indicated Resources.
Mining metrics
As at 30 June 2025 | inclusive
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Reserves & resources — reported lines
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Reserves & resources — detail
As at 30 June 2025
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