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Sample n° 13702

Minerals found in the sample
Mineral Formula Category Subcategory Importance
DUFRENITE Ca0,5Fe2+Fe3+5(PO4)4(OH)6•2H2O phosphates - major
SEGELERITE CaMgFe3+(PO4)2(OH)•4H2O phosphates - major
COLLINSITE Ca2Mg(PO4)2•2H2O phosphates - minor
JAHNSITE CaMn2+Mg2Fe3+2(PO4)4(OH)2•8H2O phosphates - minor
TOURMALINE - cyclosilicates tourmaline minor
Description
Description: crystals on debris (2 cm)
Information: specimen from type locality (segelerite)
Origin
  • Country: USA
  • Region: South Dakota
  • Locality: Custer City, Tip Top Mine
Specification
  • Donors: Segeler
    Donation year: 1980
  • 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: yes
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