Minerals identify

Know how to recognize them

Andyrobertsite

Arsenate mineral

Andyrobertsite is a rare, complex arsenate mineral with a blue color. It is found in the Tsumeb mine and named after Andrew C. Roberts (b. 1950), mineralogist with the Geological Survey of Canada. A Ca-rich analogue (with Ca instead of Cd) is called calcioandyrobertsite and has a more greenish tint.

Identification

Color of mineral

Blue

Mohs scale ( mineral hardness )

3

The streak

Blue

Density ( specific gravity )

1.72
1.749
1.757

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Monoclinic