Mineralogy Database
Search | About the mineralogy database | Contact| Sample n° 4444 |
Minerals found in the sample
| Mineral | Formula | Category | Subcategory | Importance |
|---|---|---|---|---|
| COLUMBITE | (Mn,Fe,Mg)(Nb,Ta)2O6 | oxides and hydroxides | - | major |
| TANTALITE | (Fe,Mn)Ta2O6 | oxides and hydroxides | - | major |
Description
| Description: | black debris |
| Information: | Gouder de Beauregard, C., Dubois, J. & Bourguignon, P., 1967. Comportement thermique des columbotantalites. Annales de la Société Géologique de Belgique 90, 501-518. |
Origin
Country:
Rwanda
Region:
Gitarama
Locality:
Shaki
Specification
| Donors | Polinard | Sampling year | |
| Donation year | 1954 | Registration date | |
| Quantity | 2 | Dimension code 1>2>3 | 3 |
| Size | 3 | Quality code 1>2>3 | 1 |
| Holotype | no | Thin section | no |
| Paratype | no | Chemical analysis | no |
| Radioactive | no | X-Ray spectra | no |
