Mineralogy Database

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40 samples matching your criteria

  • Sample n°2031 : dull whitish pale blue veins
    Minerals: OPAL
    Year:
    Country: Zimbabwe
  • Sample n°3127 : bright crust with undulating surface
    Minerals: OPAL
    Year:
    Country: Congo (RDC)
  • Sample n°3360 : blue geode in basalt
    Minerals: OPAL
    Year: 1953
    Country: Congo (RDC)
  • Sample n°3562 : well-developed beige concretion (core sample)
    Minerals: OPAL
    Year:
    Country: Congo (RDC)
  • Sample n°4520 : pale blue small nodules
    Minerals: OPAL
    Year:
    Country: Congo (RDC)
  • Sample n°4596 : black, blue and green debris
    Minerals: OPAL CHALCEDONY (quartz) QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°5472 : bluish reniform geode
    Minerals: OPAL
    Year: 1953
    Country: Congo (RDC)
  • Sample n°5473 : olive-green rock with conchoidal fracture
    Minerals: OPAL
    Year: 1953
    Country: Congo (RDC)
  • Sample n°5475 : reniform concretion and coral-like aggregates in basaltic tuff
    Minerals: OPAL
    Year:
    Country: Congo (RDC)
  • Sample n°5992 : pink mass in pegmatite with quartz
    Minerals: OPAL
    Year:
    Country: Congo (RDC)
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