English word chalcophyllite comes from English phyllite, English chalco- (Copper, brass etc. Ore.)
| Dictionary entry | Language | Definition |
|---|---|---|
| phyllite | English (eng) | (geology) a type of metamorphic rock formed from clay-rich sediments called pelites. |
| chalco- | English (eng) | Copper, brass etc. Ore. |
| chalcophyllite | English (eng) | (mineral) A rare secondary copper arsenate mineral occurring in the oxidized zones of some arsenic-bearing copper deposits. |