Mineralogy Database

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Sample n° 14073

Minerals found in the sample
Mineral Formula Category Subcategory Importance
COLLINSITE Ca2Mg(PO4)2•2H2O phosphates - major
ROBERTSITE Ca2Mn3+3O2(PO4)3•3H2O phosphates - minor
Description
Description: brown block (2 cm) with small white crystals
Origin
  • Country: USA
  • Region: South Dakota
  • Locality: Custer City, Tip Top Mine
Specification
  • Donors: Segeler
    Donation year: 1984
  • Sampling year:
    Registration date:
  • Quantity: 1
    Size: 3
  • 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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