Mineralogy Database

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Sample n° 9679

Minerals found in the sample
Mineral Formula Category Subcategory Importance
BIOTITE K(Fe2+,Mg)3(AlSi3O10)(OH)2 phyllosilicates mica major
ALBITE Na(AlSi3O8) tektosilicates feldspar minor
MUSCOVITE KAl2(Si3Al)O10(OH)2 phyllosilicates mica minor
QUARTZ SiO2 tektosilicates - minor
Description
Description: coarse-grained blocks with prominent large biotite crystals
Origin
  • Country: Rwanda
  • Region: Kigali
  • Locality: Kigali area
Specification
  • Donors: Varlamoff
    Donation year: 1962
  • Sampling year:
    Registration date:
  • Quantity: 3
    Size:
  • Dimension code 1>2>3: 1
    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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