sperrylite

A white crystalline platinum mineral, essentially PtAs₂.

A native arsenide of platinum, occurring in minute isometric crystals with pyrite and chalcopyrite at the Vermilion mine, near Sudbury in Ontario.

An arsenide of platinum occuring in grains and minute isometric crystals of tin-white color. It is found near Sudbury, Ontario Canada, and is the only known compound of platinum occuring in nature.

An isometric-diploidal tin white mineral containing arsenic and platinum.