|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | cummingtonite | 5.00 | parallel | Splintery | Translucent | none | 3.10 | glassy | white | white | acicular | silicates | Usually tan to dark brown color. |
|