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Sample n° 19636

Minerals found in the sample
Mineral Formula Category Subcategory Importance
AUGITE (Ca,Mg,Fe)2Si2O6 inosilicates pyroxenes major
PLAGIOCLASE (Na,Ca)(Al1+xSi3-x)O8 tektosilicates feldspar major
Description
Description: radial feldspar aggregates with dark core, and augite phenocrysts, in kivite
Origin
  • Country: Rwanda
  • Region: Ruhengeri
  • Locality: Kinigi Est, probably Gahinga volcano
Specification
  • Donors: Centre National de Volcanologie
    Donation year:
  • Sampling year: 1963
    Registration date:
  • Quantity: 1
    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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