|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | wolframite | 4.00 | perfect | Uneven | opaque | none | 4.3 | submetallic | grey | brown | tabular | tungstates | Mineral ore for tungsten. |
|