Mineralogy Database

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2 samples matching your criteria

  • Sample n°7085 : sample with polycrase as bright black material and rust-coloured powder
    Minerals: POLYCRASE-(Y)
    Year: 1959
    Country: Brazil
  • Sample n°14147 : sample with possible polyclase (x-ray amorphous), black ilmenite vein, pink plagioclase, grey zircon crystals
    Minerals: POLYCRASE-(Y) ILMENITE PLAGIOCLASE ZIRCON
    Year: 1984
    Country: Norway
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