|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | piemontite | 6.50 | poor | Uneven | Translucent | none | 3.40 | glassy | red | red | prismatic | silicates | Dark red to purple color with cherry-red streak. |
|