Mt Weld: a rare earths operation in Australia
Mt Weld is a hard-rock mine producing rare earths in the Laverton area, Western Australia, operated by Lynas. The sources report 13,089 t REO, 'Ready for sale production volume (REO) total' (finished rare earth products, company total; not mined REO) for FY2026 (Jul 2025 to Jun 2026); the basis is 100%, as reported by the operator (company total, not split by site). The sources do not give a whole-operation figure in rare earths content that can be compared with world output, so no share is computed.
Who owns and operates it?
| Owner | Interest | As of |
|---|---|---|
| Lynas | 100% | 30 June 2026 |
How much does it produce?
| Period | Output | Basis | Where in the source |
|---|---|---|---|
| FY2026 (Jul 2025 to Jun 2026) | 13,089 t REO, 'Ready for sale production volume (REO) total' (finished rare earth products, company total; not mined REO) | 100%, as reported by the operator (company total, not split by site) | PDF p.21, 'Production volumes' table, row 'Ready for sale production volume (REO) total (t)'; also PDF p.68, five-year table 'Total REO production (tonnes per annum)' · Lynas Rare Earths Ltd |
| FY2025 (Jul 2024 to Jun 2025) | 10,462 t REO, 'Ready for sale production volume (REO) total' (finished rare earth products, company total; not mined REO) | 100%, as reported by the operator (company total, not split by site) | PDF p.21, same table, FY25 column · Lynas Rare Earths Ltd |
Between FY2025 (Jul 2024 to Jun 2025) and FY2026 (Jul 2025 to Jun 2026) the reported figure rose by 25.1%, in the same unit and on the same basis.
Status: ramping, as of 29 October 2026.
- Lynas does not publish mined rare-earth oxide in concentrate in the annual or quarterly reports used here. Its production line is finished product ready for sale, reported for the company as a whole and not split by site, so it is not comparable with USGS mine production and no share of world output is computed.
How does it compare?
Other rare earths operations on this site: Mountain Pass. See where rare earths comes from for the country totals, the country page for Australia, and Lynas for its other operations here.
Sources
- Lynas Rare Earths Ltd: Appendix 4E and 2026 Annual Report (year ended 30 June 2026) (annual report (ASX announcement 2026-08-26), FY2026 (Jul 2025 to Jun 2026), with FY2025 comparatives). Opened 3 November 2026; used: PDF pp.12, 17, 18, 21, 32, 68.
- Lynas Rare Earths Limited (ASX announcement, 29 October 2026): Quarterly Report for the period ended 30 September 2026 (dated 29 October 2026) (quarterly report (ASX announcement 2026-10-29; copy distributed through the ASX filing agent weblink.com.au), Q1 FY2027 (Jul to Sep 2026)). Opened 3 November 2026; used: PDF pp.1, 6.
- U.S. Geological Survey: Mineral Commodity Summaries 2026: Rare earths (government statistical summary, 2025 (world and country mine production)). Opened 3 November 2026; used: world and country mine production 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 rare earths content 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.
- 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 rare earths mine. Shares of a country's output mix periods and bases, so treat them as indicative.
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