Chloanthite

Discredited as a species; originally considered (Ni,Co,Fe)As_2-2.5, generally now applied to a supposed arsenic-deficient variety of, or synonym of, nickelskutterudite, ideally NiAs₃, though at least some is a mixture, and any As-deficiency is probably not significant.

Renamed nickelskutterudite in 1892 by Elwyn Waller and Alfred Joseph Moses.

Described by Holmes (1926) as nickelian skutterudite, with no evidence for significant As-deficiency.

Roseboom (1962) also considered it to be a synonym of skutterudite, not differentiating a Ni-dominant species: "Prior to Holmes' classification, the nomenclature of the Co, Ni, and Fe arsenides was complicated by the acceptance of arsenide minerals of cobalt and nickel which appeared to have isometric symmetry but whose chemical analyses indicated that they were more nearly diarsenides than triarsenides. "Isometric diarsenides" rich in nickel were called chloanthite and those rich in cobalt were called smaltite. However, the x-ray patterns of various specimens of chloanthite and smaltite were found to correspond to those of skutterudite (group), loellingite, rammelsbergite, safflorite or a mixture of these."

Reported to be an arsenic-deficient nickelskutterudite by Michael Fleischer in 1987, although supporting data seems to be lacking.