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Sample n° 12669

Minerals found in the sample
Mineral Formula Category Subcategory Importance
FERBERITE Fe2+(WO4) molybdates and tungstates - major
PYROCHLORE (Ca,Na)2Nb2O6(O,OH,F) oxides and hydroxides - minor
QUARTZ SiO2 tektosilicates - minor
TOURMALINE - cyclosilicates tourmaline minor
Description
Description: block of black ferberite crystals, small white pyrochlore crystals with square faces
Origin
  • Country: Congo (RDC)
  • Region: Kivu
  • Locality: Walungu, Kadubu, Gombo
Specification
  • Donors: Safiannikoff
    Donation year: 1971
  • Sampling year:
    Registration date:
  • Quantity: 1
    Size: 2
  • 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: yes
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