Mineralogy Database

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222 samples matching your criteria

  • Sample n°4235 : white block (1 cm) with small gold crystals
    Minerals: GOLD BISMUTITE
    Year: 1954
    Country: Burundi
  • Sample n°4282 : cubic crystal (4 cm)
    Minerals: PYRITE
    Year: 1954
    Country: Burundi
  • Sample n°4316 : black crystals (mm), var. martite
    Minerals: HEMATITE
    Year: 1954
    Country: Burundi
  • Sample n°4318 : black concentrate, and fragment (2 cm)
    Minerals: RUTILE
    Year: 1954
    Country: Burundi
  • Sample n°4378 : black crystalline layer (4 cm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Burundi
  • Sample n°4427 : various crystals (cm), as alteration products of pyrite
    Minerals: HEMATITE
    Year: 1954
    Country: Burundi
  • Sample n°4428 : crystals (cm), as repllacement of pyrite in quartz geode
    Minerals: HEMATITE QUARTZ
    Year: 1954
    Country: Burundi
  • Sample n°4435 : octahedral crystals (8 mm) and anhedral crystal (4 cm)
    Minerals: MAGNETITE
    Year: 1954
    Country: Burundi
  • Sample n°4445 : black crystal (5 cm)
    Minerals: COLUMBITE TANTALITE
    Year: 1954
    Country: Burundi
  • Sample n°4447 : black plates (6 cm)
    Minerals: COLUMBITE TANTALITE
    Year: 1954
    Country: Burundi
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