Minerals identify

Know how to recognize them

Hornblende

Silicate mineral

Hornblende is a complex inosilicate series of minerals It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole.

The general formula is (Ca,Na) 2-3(Mg,Fe,Al) 5(Al,Si) 8O 22(OH,F) 2.

Identification

Color of mineral

Black
Green
Brown

Mohs scale ( mineral hardness )

5

The streak

White

Luster ( interacts light )

Dull
Vitreous

Crystal ( diaphaneity )

Monoclinic