Minerals identify

Know how to recognize them

Polybasite

Sulfosalt mineral

Polybasite is a sulfosalt , copper. Its chemical formula is.

It forms black monoclinic crystals (thin, tabular, with six corners) which can show dark red internal reflections. It has a Mohs hardness of 2.5 to 3. It is found worldwide and is an ore of silver. The name comes from the number of base metals in the mineral.

Identification

Mohs scale ( mineral hardness )

1.5
2

The streak

Red
Black

Crystal ( diaphaneity )

Monoclinic