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Sample n° 13857

Minerals found in the sample
Mineral Formula Category Subcategory Importance
META-AUTUNITE Ca(UO2)2(PO4)2•2-6H2O phosphates - major
DUFRENITE Ca0,5Fe2+Fe3+5(PO4)4(OH)6•2H2O phosphates - minor
QUARTZ SiO2 tektosilicates - minor
Description
Description: sample with meta-autunite, grey-brown fibro-radial dufrenite nodules with black centre, smoky quartz
Origin
  • Country: Portugal
  • Region: Freixosa
  • Locality:
Specification
  • Donors: Deliens
    Donation year: 1980
  • Sampling year:
    Registration date:
  • Quantity: 2
    Size: 9 x 7 cm, 8 x 5 cm
  • Dimension code 1>2>3: 2
    Quality code 1>2>3: 1
  • Holotype: no
    Paratype: no
    Radioactive: yes
  • Thin section: no
    Chemical analysis: no
    X-Ray spectra: yes
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