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Sample n° 4701

Minerals found in the sample
Mineral Formula Category Subcategory Importance
TOURMALINE - cyclosilicates tourmaline major
QUARTZ SiO2 tektosilicates - minor
Description
Description: black prismatic crystal (10 cm) in vein quartz
Information: Polinard, E., 1957. Les richesses minérales du Congo belge. Leur genèse et leur mise en valeur. In L'Encyclopedie du Congo Belge. Editions Bieleveld, Bruxelles, Vol. 2, p. 471-570. (Fig. 64)
Origin
  • Country: Rwanda
  • Region: Byumba
  • Locality: Lugarama, Bujumu
Specification
  • Donors: Polinard
    Donation year: 1954
  • 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: no