Mineralogy Database

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

2 samples matching your criteria

• Sample n°3056.2 : purple block (2 cm)
  Minerals: DUMORTIERITE

  Year: 1951

  Country: USA
• Sample n°6942 : sample with francevillite as yellow impregnation in sandstone
  Minerals: FRANCEVILLITE

  Year: 1957

  Country: USA

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