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Sample n° 6928

Minerals found in the sample
Mineral Formula Category Subcategory Importance
DUFRENITE Ca0,5Fe2+Fe3+5(PO4)4(OH)6•2H2O phosphates - major
Description
Description: black earthy block (6 cm)
Origin
  • Country: USA
  • Region: Virginia
  • Locality: Lexington
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
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