Minerals identify

Know how to recognize them

Chalcophyllite

Arsenate mineral

Chalcophyllite is a rare secondary copper mineral occurring in the oxidized zones of some arsenic -bearing copper deposits. It was first described from material collected in Germany. At one time chalcophyllite from Wheal Tamar in Cornwall, England, was called tamarite, but this name is now discredited (not to be confused with the amphibole mineral taramite a specimen exhibiting partial replacement of liriconite , Cu 2Al(AsO 4)(OH) 4•(4H 2O), by chalcophyllite has been found. The mineral is named from the Greek, chalco "copper" and fyllon, "leaf", in allusion to its composition and platy structure. It is a classic Cornish mineral that can be confused with tabular spangolite.

Identification

Color of mineral

Blue
Green

Mohs scale ( mineral hardness )

2

The streak

Green

Density ( specific gravity )

1.618
1.552

Luster ( interacts light )

Adamantine
Vitreous
Pearly

Crystal ( diaphaneity )

Trigonal