|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | ilvaite | 6.50 | basal | Splintery | opaque | none | 3.80 | waxy | black | brown | acicular | silicates | Striations on prism faces. |
|