Mäkinenite

makinenite

sederholmite

clausthalite

melonite

Images

Formula: NiSe
Selenide, trigonal paramorph of hexagonal sederholmite, nickel-bearing mineral
Crystal System: Trigonal
Specific gravity: 7.22 calculated
Hardness: 2½ to 3
Colour: Yellow
Environments

Metamorphic environments
Hydrothermal environments

Localities

At the type locality, the Kitka River Valley, Kuusamo, North Ostrobothnia, Finland, massive mäkinenite is associated with clausthalite and melonite in sills of albite dolerite in schist, associated with low-grade uranium mineralisation (Mindat, Webmin).

Back to Minerals