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Sample n° 10380

Minerals found in the sample

Mineral	Formula	Category	Subcategory	Importance
COLUMBITE	(Fe,Mg,Mn)Nb2O6	oxides and hydroxides	-	major

Description

Description: black tabular crystals (2 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. (as RGM 10464 and 10.465, now grouped with RGM 10.380)

Origin

• Country: Rwanda
• Region: Gisenyi
• Locality: Buranga

Specification

• Donors: Bertossa
  Donation year:
• Sampling year:
  Registration date:
• Quantity: 1
  Size: 3

• Dimension code 1>2>3: 3
  Quality code 1>2>3: 1
• Holotype: no
  Paratype: no
  Radioactive: no
• Thin section: no
  Chemical analysis: no
  X-Ray spectra: no

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