Minerals identify

Know how to recognize them

Sturmanite

Sulfate mineral

Sturmanite is a rare sulfate mineral with the chemical formula Ca )(OH It crystallises in the tetragonal system and it has a Moh's hardness of 2.5. Sturmanite has a bright yellow to amber colour and falls in the ettringite group. It was named after Bozidar Darko Sturman (born 1937), Croatian-Canadian mineralogist and Curator Emeritus of Mineralogy, Royal Ontario Museum

Identification

Color of mineral

Yellow

Mohs scale ( mineral hardness )

2.5

The streak

Brown
Yellow
Green
Orange

Luster ( interacts light )

Vitreous
Greasy

Crystal ( diaphaneity )

Tetragonal