Mineralogy Database

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Hierarchical browse (Geography) >> USA >> < Unspecified > >> < Unspecified >

4 samples matching your criteria
  • Sample n°5970 : micaceous debris
    Minerals: VERMICULITE
    Year: 1957
    Country: USA
  • Sample n°6947 : small yellow fibres in debris
    Minerals: MIMETITE
    Year: 1954
    Country: USA
  • Sample n°6976 : clayey block with conchoidal fracture (7 cm), bentonite
    Minerals: MONTMORILLONITE
    Year: 1954
    Country: USA
  • Sample n°12786 : bright brown-purple crystalline crust (mm) on block (4 cm)
    Minerals: HEWETTITE
    Year: 1971
    Country: USA
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