Minerals identify

Know how to recognize them

Fassaite

Mineral

Fassaite is a variety of augite with a very low iron content, Ca(Mg,Fe,Al)(Si,Al) 2O 6. It is named after the Fassa Valley, Italy.

It is thought to be a contact mineral formed at high temperature on the interface between volcanic rocks and limestone. It is also reported in meteorites

Identification

Color of mineral

Green
Black

Mohs scale ( mineral hardness )

6

The streak

Green
White

Crystal ( diaphaneity )

Monoclinic