|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | alunite | 3.50 | poor | conchoidal | Translucent | none | 2.75 | glassy | white | white | faceted | sulfates | Usually microcrystalline white, yellow, grey or red masses. Another reference here alunite |
|