Mineralogy Database

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272 samples matching your criteria

  • Sample n°4793 : white block (10 cm)
    Minerals: MONTEBRASITE SCORZALITE CHILDRENITE
    Year:
    Country: Rwanda
  • Sample n°4797 : black concentrate (2 mm)
    Minerals: COLUMBITE
    Year: 1955
    Country: Rwanda
  • Sample n°5441 : brown-pink crystal (3 cm)
    Minerals: TANTALITE-(Mn)
    Year: 1955
    Country: Rwanda
  • Sample n°5904 : concentrate (1.4 % U308)
    Minerals: MICROLITE
    Year: 1957
    Country: Rwanda
  • Sample n°5905 : concentrate (1.33 % U3O8)
    Minerals: MICROLITE
    Year: 1957
    Country: Rwanda
  • Sample n°6106 : sample with traces of autunite, rutherfordine as yellow powder, in muscovite-bearing pegmatite
    Minerals: AUTUNITE RUTHERFORDINE
    Year: 1957
    Country: Rwanda
  • Sample n°6541 : block of mixed phosphates (10 cm)
    Minerals: HETEROSITE PHOSPHOSIDERITE HUREAULITE
    Year:
    Country: Rwanda
  • Sample n°6545 : stacked plates (25 cm)
    Minerals: MUSCOVITE
    Year: 1953
    Country: Rwanda
  • Sample n°7924 : black crystals (4 cm) in micaceous pegmatite
    Minerals: SCHORL
    Year:
    Country: Rwanda
  • Sample n°7972 : block of mixed phosphates
    Minerals: ALLUAUDITE HETEROSITE FERRISICKLERITE
    Year:
    Country: Rwanda
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