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Sample n° 4769

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: tabular crystals (1-2 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. // sample for geochronology

Origin

• Country: Congo (RDC)
• Region: Kivu
• Locality: Shabunda, Nietubu mine

Specification

• Donors: Claisse Cobelmin
  Donation year: 1954
• Sampling year:
  Registration date:
• Quantity: 3
  Size: 3

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

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