Thorianite | |
Chemical Formula |
Thorium oxide, ThO2 |
Species |
Oxides & Hydroxides |
Crystal System |
Isometric |
Mohs Scale |
6-7 |
Specific Gravity |
9.7 |
Color |
Dark gray, brown-black |
Streak |
Grey, grey green to black |
Luster |
Resinous, Sub-Metallic |
Refractive Index |
n = 2.20 – 2.35 |
Diaphaneity |
Opaque, translucent on thin edges |
Cleavage |
Poor/Indistinct poor. |
Fracture |
Irregular/Uneven, Sub-Conchoidal |
Crystal Habit:Cubic crystals, usually rounded to some degree in detrital deposits |