Al(OH)3 + AlO(OH) (mixture)Various
Bauxite
Al(OH)3 + AlO(OH) (mixture)
OxidesChemical FormulaAl(OH)3 + AlO(OH) (mixture)
Crystal SystemVarious
Mohs Hardness1.5
Specific Gravity2.5
ColorWhite, gray, yellow, red
LusterDull
StreakWhite
CleavageNone
FractureEarthy
Occurrence
Principal ore of aluminum. Found in tropical and subtropical regions. Not a single mineral.