pharmacosiderite Min.
(ˌfɑːməkəʊˈsaɪdəraɪt)
[Named by Hausmann, 1813, f. Gr. ϕάρµακον in sense ‘poison’ + σίδηρ-ος iron + -ite.]
Hydrous arsenate of iron, occurring in minute greenish or brownish crystals of cubic or tetrahedral form; also called cube-ore.
| 1835 C. U. Shepard Min. II. 102 Pharmacosiderite. (See Cube-Ore.) 1877 Min. Mag. I. 17 The pharmacosiderite occurs in the usual cubical forms. |