Minerals identify

Know how to recognize them

Bismutite

Carbonate mineral

Bismutite or bismuthite is a bismuth carbonate mineral with formula Bi2(CO3)O2 (bismuth subcarbonate ). Bismutite occurs as an oxidation product of other bismuth minerals such as bismuthinite and native bismuth in hydrothermal and pegmatites It crystallizes in the orthorhombic system and typically occurs as earthy to fibrous masses.

It was first described in 1841 for an occurrence in Saxony

The term bismuthite has been used in the past for bismuthinite

Identification

Color of mineral

Brown
Yellow
Green
Grey
Black

Mohs scale ( mineral hardness )

2.5

Luster ( interacts light )

Vitreous
Waxy
Dull

Crystal ( diaphaneity )

Orthorhombic