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Sample n° 11325

Minerals found in the sample
Mineral Formula Category Subcategory Importance
CORDIERITE Mg2Al4Si5O18 cyclosilicates - major
ALMANDINE Fe2+3Al2(SiO4)3 nesosilicates garnet minor
ORTHOCLASE K(AlSi3O8) tektosilicates feldspar minor
Description
Description: vitreous purple crystals in gneiss
Origin
  • Country: Madagascar
  • Region: Fianarantsoa Province
  • Locality: Lamboany
Specification
  • Donors: Geological Survey of Madagascar
    Donation year: 1967
  • Sampling year:
    Registration date:
  • Quantity: 2
    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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