|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | zircon | 7.50 | poor | conchoidal | opaque | none | 3.90 | dull | brown | white | faceted | silicates | Metamict due to Th and U. |
|