Gaspéite, a very rare nickel carbonate mineral, with the formula (Ni,Fe,Mg)CO3, is named for the place it was first described, in the Gaspé Peninsula, Québec, Canada.

A solid solution series exists between all members of this group with divalent cations readily exchanged within the common crystal structure.

Nickel carbonate, though not conclusively proven to be gaspéite, is also reported in hydrothermally altered ultramafic rocks in New South Wales, Australia, associated with serpentinite bodies and lode gold deposits.

Gaspéite presence in the geologic environment may be used as an ore mining indicator of nickel rich minerals nearby.

Gaspéite stones are used for carving ornamental objects and animal figurines, and are also cut and polished into attractive apple green color (often veined) cabochons for jewelry use.