Object Record
Images
Metadata
Object Name |
Columbite |
Object Description |
A sample of flattened, massive, black columbite with a thin coating of granitic matrix on all sides. ** RADIOACTIVE ** |
Rock type |
Mineral |
Chemical Comp |
(Fe, Mn)(Nb)2 O6 |
Crystal System |
Orthorhombic |
Sp Grav. |
5.3 |
Hardness |
6 |
Luster |
Sub-metallic |
Streak |
Black |
Fracture |
Subconchoidal |
Radioactivity mR/hr |
0.20 |
Search Terms |
NORM Radioactive |
Dimensions |
H-2.5 W-4.75 L-6 cm |
Catalog Number |
2233 |