|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | chalcocite | 2.00 | none | conchoidal | opaque | none | 5.50 | metallic | grey | grey | tabular | native element | sometimes tabular crystals but generally massive. |
|