novákite Min.
(nəʊˈvɑːkaɪt)
Also novakite.
[ad. G. novákit (Johan & Hak 1959, in Chem. der Erde XX. 49), f. the name of Ji{rhacek}{iacu}Novák, 20th-cent. Czechoslovakian mineralogist: see -ite1.]
A tetragonal arsenide of copper, Cu4As3, found at Černy Důl, Czechoslovakia, which is steel-grey on fresh fracture but becomes almost black on exposure to air.
| 1959 Amer. Mineralogist XLIV. 1321 From the powder pattern, novakite is tetragonal..and..pseudocubic. 1961 Mineral. Abstr. XV. 292/2 Novakite occurs (with chalcocite and löllingite) as impregnations in carbonate rocks in Cu-Co-As ores. 1970 Amer. Mineralogist LV. 1084 (caption) Polished surface of kutinaite..intergrown with novákite..and calcite. |