|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | gadolinite | 6.50 | none | Splintery | Transparent | none | 4.00 | waxy | green | green | faceted | silicates | Striated faces. When metamict turns black. |
|