Minerals identify

Know how to recognize them

Hisingerite

Silicate mineral

Hisingerite is an iron(III) mineral with formula Fe 5(OH. A black or dark brown, lustrous secondary mineral, it is formed by the weathering or hydrothermal alteration of other iron silicate

It was first described in 1828 for an occurrence in Riddarhyttan, Vastmanland. It was named after Wilhelm Hisinger

There are also aluminian hisingerite variety in which one of the iron atoms is replaced by aluminium and chrome-alumina-hisingerite variety in which chromium

Identification

Color of mineral

Black
Brown

Mohs scale ( mineral hardness )

2.5

The streak

Brown
Green

Density ( specific gravity )

1.715
1.73

Luster ( interacts light )

Vitreous
Resinous
Greasy

Crystal ( diaphaneity )

Monoclinic