Colemanite Mining

Colemanite

Description
Colemanite is a hydrated calcium borate, an altered variation of borax. Over 200 minerals contain boron, but colemanite is one of only a few which is commercially important. It contains 50% B2O3. It forms at a lower pH and warmer temperature than other borates including ulexite.

Colemanite

TypeCrystal System
MineralMonoclinic
Mineral ClassificationColor
InoboratesWhite, clear, colorless, gray
Chemical FormulaLuster
CaB3O4(OH)3┬ĚH2OVitreous
StreakFracture
WhiteConchoidal
Mohs Hardness
4.5

Uses
See Boron

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