Minerals identify

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Jolliffeite

Selenide mineral

Jolliffeite is a rare selenide mineral with formula NiAsSe or (Ni,Co)AsSe. It is the selenium gersdorffite , NiAsS, with a common impurity of cobalt, CoAsSe. It is named for its discoverer, Alfred Jolliffe , (1907–1988), a Canadian geologist of Queen's University.

Identification

Color of mineral

White

Mohs scale ( mineral hardness )

6
6.5

Luster ( interacts light )

Metallic

Crystal ( diaphaneity )

Isometric