Weipa (including Amrun): a bauxite operation in Australia

Weipa (including Amrun) is an open-pit mine producing bauxite in Weipa, Queensland, Australia, operated by Rio Tinto. The sources report 39,464 thousand tonnes ('000 tonnes), marketable quantities of ore plus concentrates for CY2025; the basis is 100% of the operation (Rio Tinto interest 100%). Measured as bauxite, whole-operation output for CY2025 is 39,464,000 tonnes: about 9% of world bauxite output in 2025 and about 41% of Australia's; it is one of 9 operations on this site whose output can be stated in bauxite.

Who owns and operates it?

Owners of Weipa (including Amrun)
Owner	Interest	As of
Rio Tinto (operator) The annual report prints ownership as 100% Rio Tinto, operated by Rio Tinto through RTA Weipa P/L. The property covers the Andoom, East Weipa, Amrun, Norman Creek, Moingum (Hey Point) and North of Weipa deposits.	100%	31 December 2025

Interests are as stated in the sources below on the date shown. Ownership changes with deals, so a stake may have changed since the date shown.

How much does it produce?

Reported output of Weipa (including Amrun)
Period	Output	Basis	Where in the source
CY2025	39,464 thousand tonnes ('000 tonnes), marketable quantities of ore plus concentrates The table does not say whether tonnes are dry or wet. The annual report separately prints that Amrun produced 25.3 million tonnes in 2025; Amrun is part of the Weipa total and the two figures are not added.	100% of the operation (Rio Tinto interest 100%)	PDF p.278 (printed p.276), 'Metals and minerals production', section BAUXITE ('000 tonnes), row Weipa (Australia), 2025 Production 'Total' column; note 4 on PDF p.279 (printed p.277); Amrun figure PDF p.29 (printed p.27), case study 'Amrun - Unlocking full potential in bauxite' · Rio Tinto
CY2024	37,078 thousand tonnes ('000 tonnes), marketable quantities of ore plus concentrates	100% of the operation (Rio Tinto interest 100%)	PDF p.278 (printed p.276), same row, 2024 Production 'Total' column · Rio Tinto

Between CY2024 and CY2025 the reported figure rose by 6.4%, in the same unit and on the same basis.

How the bauxite figure is worked out. Rio Tinto prints 39,464 thousand tonnes for Weipa in 2025 in both the Total column and the Rio Tinto share column (100% interest), so the figure covers the whole operation. The table gives marketable quantities of ore plus concentrates and does not say whether the tonnes are dry or wet. Converted from thousand tonnes to tonnes. World bauxite mine production in 2025 was 440,000,000 tonnes (USGS Mineral Commodity Summaries 2026); Australia produced 97,000,000 tonnes.

Status: operating, as of 31 December 2025.

Weipa is one operation that includes the Amrun mine. Rio Tinto prints Amrun at 25.3 million tonnes for 2025 in a case study and does not print a separate Amrun line in the production table.
USGS prints 97 million tonnes for Australia in 2025. Weipa, Gove and Alcoa's Darling Range are listed as separate operations on this site.
Alumina refineries and aluminum smelters are separate from this bauxite mine entry.

How does it compare?

Other bauxite operations on this site: Gove, Porto Trombetas (Mineracao Rio do Norte), Sangaredi (Compagnie des Bauxites de Guinee), Societe Miniere de Boke (SMB), Boffa (Chalco Guinea), Pingguo, Shanxi New Materials mines (merged line), Darling Range (Huntly and Willowdale), Juruti, Pocos de Caldas, Paragominas, Panchpatmali bauxite mines. In Australia: Gove, Darling Range (Huntly and Willowdale). See where bauxite comes from for the country totals, the country page for Australia, and Rio Tinto for its other operations here.

Sources

Rio Tinto: Rio Tinto Annual Report 2025 (annual report (filed with the U.S. SEC as an exhibit to Form 6-K), FY2025 (calendar), with 2024 and 2023 comparatives). Opened 4 November 2026; used: PDF p.29 (printed p.27), PDF p.160, PDF pp.278-279 (printed pp.276-277, Metals and minerals production), PDF pp.306-307 (printed pp.304-305, Group mines).
U.S. Geological Survey: Mineral Commodity Summaries 2026: Bauxite and Alumina (government statistical summary, 2025 (world and country bauxite mine production)). Opened 3 November 2026; used: world mine production and reserves table.

Method and limits

Reported, not estimated. Output is the figure the operator or owner published, in the unit it used. This site does not estimate output where none is published.
Shares. A share divides output in bauxite by the USGS world or country total for 2025. Where the operator's year is a fiscal year or the unit is a concentrate or a carbonate equivalent, the share is approximate or not given.
What is compared. Operators print tonnes of bauxite on a dry or wet basis, or do not say which. USGS bauxite mine production is in dry tonnes, so where the basis differs or is not stated the share is indicative.
Whole operation or owner's share. The basis column says which. A joint venture's output is never counted twice.
Partial list. Only operations with a published figure are listed, so the rank is among those on this site, not among every bauxite mine. Shares of a country's output mix periods and bases, so treat them as indicative.
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