Mineralogy Database

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Hierarchical browse (Geography) >> Mexico >> Guanajuato >> < Unspecified >

3 samples matching your criteria
  • Sample n°6676 : black metallic block (4 cm)
    Minerals: POLYBASITE
    Year: 1954
    Country: Mexico
  • Sample n°19801 : pinkish brown, with bright lustre, conchoidal fracture
    Minerals: OPAL
    Year: 2022
    Country: Mexico
  • Sample n°20092 : crystal group
    Minerals: CALCITE
    Year: 2023
    Country: Mexico