Mine / resource · Canada

Whabouchi (Nemaska Lithium)

DevelopmentNot yet verifiedAs of 25 Oct 2026
Owner
Nemaska Lithium: Rio Tinto 53.9%, Government of Québec (Investissement Québec) 46.1%
Listed via
RIO
Product
Spodumene
Deposit type
Spodumene
Capacity
Ore Reserve 26.5 Mt @ 1.32% Li2O; Mineral Resource (excl. Reserves) 26.9 Mt @ 1.45% Li2O (30 Jun 2025, 100% basis); projected 24-year open-pit life; would feed Bécancour (28 ktpa LCE) if selected
Location
51.68°, -75.85°

Eeyou Istchee James Bay, Québec, ~30 km east of Nemaska at km 276 of the Route du Nord. Location = property centre UTM 18N 441,000 E / 5,725,750 N (NAD83) from the Whabouchi NI 43-101 technical reports, converted to decimal degrees; property level, not a built pit. Mine choice vs Galaxy expected Q4

Ownership structure

Effective economic interest of listed owners · As of 25 Oct 2026
Rio TintoRIO53.9%Other / unlisted46.1%Whabouchi (Nemaska LitMine / resource

Structure: Nemaska Lithium: Rio Tinto 53.9%, Government of Québec (Investissement Québec) 46.1%. 46.1% is held by unlisted or untracked owners.

Value chain

Owners, buyers and the refineries on Li3atlas they feed · As of 25 Oct 2026
Listed ownersRio TintoRIO · 53.9%
Mine / resourceWhabouchi (Nemaska Lithium)Ore Reserve 26.5 Mt @ 1.32% Li2O; Mineral Resource (excl. Reserves) 26.9 Mt @ 1.45% Li2O (30 Jun 2025, 100% basis); projected 24-year open-pit life; would feed Bécancour (28 ktpa LCE) if selected

Country risk · Canada

Policy risk: Low As of 24 Oct 2026

Change history

Approved changes with their source · As of 25 Oct 2026
DateFieldChangeSource
25 Oct 2026Notesnew: Added to Li3atlas: Whabouchi (Nemaska Lithium)Rio Tinto Third Quarter Operations Review 2026 (ASX, 14 Oct 2026)

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