|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | diaspore | 6.50 | perfect | conchoidal | Transparent | none | 3.30 | glassy | grey | white | acicular | hydroxides | Color variable. Alteration of corundum. |
|