Gummite | |
Species |
Oxides & Hydroxides |
Mohs Scale |
2-5 |
Specific Gravity |
3.9-6.4 |
Color |
Orange, yellow, orange-red, red-brown, brown-black, black |
Streak |
Yellow, brownish, olive-green |
Luster |
Vitreous, Waxy, Greasy, Dull |
Diaphaneity |
Translucent |
Cleavage |
None Observed |
Fracture |
Irregular/Uneven, Conchoidal |