Critical Minerals Factbook
Facility

Lynas Kalgoorlie Rare Earths Processing Facility

Lynas Rare Earths' cracking and leaching facility at Kalgoorlie-Boulder, Western Australia, which processes rare earth concentrate from the Mt Weld mine into a mixed rare earth carbonate (MREC) for further processing at Lynas Malaysia. First feed of Mt Weld material was reported in December 2023, marking the transition from commissioning to initial production, and Lynas reported that MREC production commenced in the June 2024 quarter with the first shipment dispatched to Lynas Malaysia. Operating and ramping up.

Facts on this page last re-verified Aug 11, 2026 — the oldest verification date among its current claims. How we verify.

Location: Kalgoorlie-Boulder (Lot 500 Great Eastern Highway, Yilkari), Western Australia, Australia

Mining & feedstock

Cracking and leaching (mixed rare earth carbonate)

Operating

Sulfuric acid cracking of Mt Weld rare earth concentrate in a 110-metre rotating kiln followed by water leaching, impurity removal and neutralisation to produce a mixed rare earth carbonate (pre-separation intermediate) for further processing at Lynas Malaysia

Material flow

Monazite Concentrate → Mixed Rare Earth Carbonate

Capacity

No capacity claim. Absence of a figure means no source publishes one.

Qualification

No qualification claim. Status does not imply qualified output.

Sources