domeykite
Rare mineralogical term for domeykite, a copper arsenide mineral. Not encountered in everyday Japanese.
Domeykite is a mineral composed of copper and arsenic.
The Japanese term 砒銅鉱 is a compound of 砒 (hi, 'arsenic'), 銅 (dō, 'copper'), and 鉱 (kō, 'ore'), reflecting its composition as a copper arsenide mineral. The exact historical derivation is uncertain; the spelling is conventionally associated with the mineral domeykite.