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Sample n° 4797
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
COLUMBITE | (Fe,Mg,Mn)Nb2O6 | oxides and hydroxides | - | major |
Description
Description:
black concentrate (2 mm)
Information:
Gouder de Beauregard, C., Dubois, J. & Bourguignon, P., 1967. Comportement thermique des columbotantalites. Annales de la Société Géologique de Belgique 90, 501-518. // sample for geochronology
Origin
- Country: Rwanda
- Region: Gisenyi
- Locality: Buranga
Specification
-
Donors: Thoreau (UCL)Donation year: 1955
-
Sampling year:Registration date:
-
Quantity: XSize: 3
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Dimension code 1>2>3: 3Quality code 1>2>3: 1
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Holotype: noParatype: noRadioactive: no
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Thin section: noChemical analysis: noX-Ray spectra: no