Minerals identify

Know how to recognize them

Chalcopyrite

Sulfide mineral

Chalcopyrite ( /ˌkælkəˈpaɪraɪt, -koʊ-/ KAL-ko-PY-ryt sulfide mineral that crystallizes in the tetragonal CuFeS2. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green tinged black.

On exposure to air, chalcopyrite tarnishes to a variety of oxides, hydroxides, and sulfates. Associated copper minerals include the sulfides bornite (CuS), digenite and azurite (Cu2O). Is rarely found in association with native copper. Chalcopyrite is a conductor of electricity.

Identification

Color of mineral

Yellow

Mohs scale ( mineral hardness )

3.5

The streak

Black

Luster ( interacts light )

Metallic

Crystal ( diaphaneity )

Tetragonal

Magnetic

Magnetic