Diaspore | |
Chemical Formula |
α-AlO(OH) |
Species |
Oxides & Hydroxides |
Crystal System |
Orthorhombic |
Mohs Scale |
6-7 |
Specific Gravity |
3.2-3.5 |
Color |
white, brown, colourless, pale yellow, greyish, greenish grey, lilac, pinkish |
Streak |
white |
Luster |
Vitreous, Pearly |
Refractive Index |
n = 1.682 - 1.706 n = 1.705 - 1.725 n = 1.730 - 1.752 |
Diaphaneity |
Transparent, Translucent |
Cleavage |
Perfect perfect; distinct; in traces |
Fracture |
Conchoidal |
Crystal Habit:Platey, elongated to acicular crystals; also stalactitic, foliated, scaly, disseminated and massive | |
Geological Setting:With other minerals in bauxite deposits. |