Minerals identify

Know how to recognize them

Digenite

Sulfide mineral

Digenite is a copper mineral with formula: Cu9S5. Digenite is a black to dark blue opaque mineral that crystallizes with a trigonal - hexagonal scalenohedral structure. In habit it is usually massive, but does often show pseudo-cubic forms. It has poor to indistinct cleavage and a brittle fracture. It has a Mohs hardness of 5.6. It is found in copper sulfide deposits of both primary and supergene occurrences. It is typically associated with and often intergrown with chalcocite , djurleite and pyrite is Sangerhausen, in copper slate deposits.

Identification

Color of mineral

Black
Blue

Mohs scale ( mineral hardness )

2.5

Luster ( interacts light )

Metallic
Submetallic

Crystal ( diaphaneity )

Trigonal