Colemanite

minerals

ulexite

meyerhofferite

borax

Images
Formula: CaB3O4(OH)3.H2O
Borate
Specific gravity: 2.4
Hardness: 4½
Streak: White
Colour: Colourless, white
Solubility: Slightly soluble in water
Environments:

Evaporite Deposits

Colemanite occurs in borax lake bed deposits and sediments, in arid alkali environments. Ulexite and borax are usually associated, and colemanite is believed to have originated by their alteration.

Back to Minerals