cobalt-nickel pyrite
cobalt-nickel pyrite
A name applied by Vernadsky to a steel-gray member of the pyrite group containing 11.7% to 17.5% nickel and 6.6% to 10.6% (Fe,Ni,Co)S2; small, pyritohedral crystals; isometric. Probably a mixture of siegenite and pyrite. From Musen, Westphalia, Germany.
As applied by Henglein, a syn. for hengleinite.