Minerals identify

Know how to recognize them

Colemanite

Inoborates

Colemanite (Ca2B6O11·5H2O) or (CaB3O4(OH)3·H2O) is a borate mineral deposits environments. Colemanite is a secondary mineral that forms by alteration of borax and ulexite

It was first described in 1884 for an occurrence near Furnace Creek and was named after William Tell Coleman (1824–1893), owner of the mine "Harmony Borax Works" where it was first found. At the time, Coleman had alternatively proposed the name "smithite" instead after his business associate Francis Marion Smith

Identification

Color of mineral

White
Yellow
Grey

Mohs scale ( mineral hardness )

4.5

Density ( specific gravity )

1.586
1.592
1.614

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Monoclinic