Mine / resource · Australia

Mt Cattlin

Curtailed / C&MVerified 24 Oct 2026As of 24 Oct 2026
Owner
Rio Tinto (ex-Arcadium)
Listed via
RIO
Product
Spodumene
Deposit type
Spodumene
Capacity
~0.2 Mtpa SC
≈ 25 kt LCE/yr (nameplate)
Location
-33.56°, 120.03°
Source
Filing used for verification

In care and maintenance since end of March 2025; no spodumene produced in 2026 to date (Rio Tinto Q3 2026).

Ownership structure

Effective economic interest of listed owners · As of 24 Oct 2026
Rio TintoRIO100%Mt CattlinMine / resource

Attributable capacity

Listed ownerStakekt SC/yrkt LCE/yr
Rio Tinto RIO100%≈187≈25

Capacity × effective stake. kt SC ≈ kt LCE × 7.5 (grade-based, 90% recovery).

Structure: Rio Tinto (ex-Arcadium).

Value chain

Owners, buyers and the refineries on Li3atlas they feed · As of 24 Oct 2026
Listed ownersRio TintoRIO · 100%
Mine / resourceMt Cattlin~0.2 Mtpa SC

Quarterly production

As of 30 Sept 2025
00.250.50.7511.25UnverifiedUnverifiedUnverifiedUnverifiedJun Q 2025: 0 kt SC0Sep Q 2025: 0 kt SC0Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26

kt SC, as reported · Source: Mar Q 2025, Jun Q 2025, Sep Q 2025

34Production (kt SC): 34Sales (kt SC): 20Mar Q 25Production (kt SC): 0Sales (kt SC): 23Jun Q 25Production (kt SC): 0Sales (kt SC): 30.6Sep Q 25
Production (kt SC)Sales (kt SC)
Sep Q 25Jun Q 25Mar Q 25
Production (kt SC)0034
Sales (kt SC)30.62320
Implied inventory change (prod − sales)−30.6−23+14

Production minus sales in the same unit: positive = stockpile built at the mine or port, negative = drawn down.

Resource and mine life

As of 24 Oct 2026
Resource
0.38 Mt LCE
Reserve
0.06 Mt LCE
Grade
1.35% Li2O (resource, exclusive of reserves); 1.10% Li2O (reserve)
As of
30 Jun 2025

Milestones

As of 24 Oct 2026

Completed (1)

  • Mar 2025Mt Cattlin placed on care and maintenanceCurtailment · source

Country risk · Australia

Policy risk: Low As of 24 Oct 2026
Royalty
Western Australia: 5% of gross sales revenue on spodumene concentrate, at first point of sale (since 28 Mar 2020)

Stable fiscal regime; royalty set by the state. source

Change history

Approved changes with their source · As of 24 Oct 2026
DateFieldChangeSource
24 Oct 2026Quarterly figuresnew: Jun Q 2025 · production 0 kt SC · sales 23 kt SCRio Tinto Second Quarter Operations Review 2025 (ASX, 16 Jul 2025)
24 Oct 2026Quarterly figuresnew: Mar Q 2025 · production 34 kt SC · sales 20 kt SCRio Tinto Second Quarter Operations Review 2025 (ASX, 16 Jul 2025)
24 Oct 2026VerifiedValues confirmedRio Tinto Third Quarter Operations Review 2026 (ASX, 14 Oct 2026)
24 Oct 2026NotesPlaced on care and maintenance in 2025. → In care and maintenance since end of March 2025; no spodumene produced in 2026 to date (Rio Tinto Q3 2026).Rio Tinto Third Quarter Operations Review 2026 (ASX, 14 Oct 2026)
24 Oct 2026Quarterly figuresnew: Sep Q 2025 · production 0 kt SC · sales 30.6 kt SCRio Tinto Third Quarter Operations Review 2026 (ASX, 14 Oct 2026)
24 Oct 2026Resource / reservenew: resource 0.38 Mt LCE · reserve 0.06 Mt LCE · 1.35% Li2O (resource, exclusive of reserves); 1.10% Li2O (reserve) · as of 2025-06-30Rio Tinto Notice to ASX: Initial reporting of lithium Mineral Resources and Ore Reserves (4 Dec 2025)
24 Oct 2026Milestonenew: Mar 2025 · Mt Cattlin placed on care and maintenance Curtailment CompletedRio Tinto Second Quarter Operations Review 2025 (ASX, 16 Jul 2025)

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