Mineralogy Database
Search |
About the mineralogy database |
Contact
Sample n° 4447
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
COLUMBITE | (Fe,Mg,Mn)Nb2O6 | oxides and hydroxides | - | major |
TANTALITE | (Fe2+,Mn2+)Ta2O6 | oxides and hydroxides | - | major |
Description
Description:
black plates (6 cm)
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: Burundi
- Region: Cibitoke
- Locality: Pic N'Dora
Specification
-
Donors: PolinardDonation year: 1954
-
Sampling year:Registration date:
-
Quantity: 2Size: 2
-
Dimension code 1>2>3: 3Quality code 1>2>3: 1
-
Holotype: noParatype: noRadioactive: no
-
Thin section: noChemical analysis: noX-Ray spectra: no