Minerals identify

Know how to recognize them

Beraunite

Phosphate mineral

Beraunite is an iron. It was first described by August Breithaupt for an occurrence in Beraun. Beraunite occurs as a secondary mineral in iron ore deposits, and as an alteration product of primary phosphate minerals in granite pegmatites.

Beraunite crystallizes in the monoclinic crystal system 2/m. Beraunite’s formula is Fe2+ Fe3+5(OH)5(PO4)4·4H2O. Aluminium and zinc may substitute in the structure.

Identification

Color of mineral

Brown
Green
Red

Mohs scale ( mineral hardness )

3
4

The streak

Brown
Yellow

Density ( specific gravity )

1.775
1.786
1.815

Luster ( interacts light )

Vitreous
Pearly
Resinous

Crystal ( diaphaneity )

Monoclinic