Minerals identify

Know how to recognize them

Cryolite

Halide mineral

Cryolite (Na 6, sodium hexafluoroaluminate) is an uncommon mineral on the west coast of Greenland , depleted by 1987.

Due to its rarity it is possibly the only mineral on Earth ever to be mined to commercial extinction.

Identification

Color of mineral

White
Brown
Red
Black

Mohs scale ( mineral hardness )

2.5

Density ( specific gravity )

1.3385
1.3389
1.3396

Luster ( interacts light )

Greasy
Vitreous
Pearly

Crystal ( diaphaneity )

Monoclinic