Mineralogy Database

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103 samples matching your criteria

  • Sample n°19027 : kivite with abundant augite phenocrystals, some olivine
    Minerals: AUGITE OLIVINE
    Year:
    Country: Rwanda
  • Sample n°19028 : large augite and leucite crystals in lava
    Minerals: AUGITE LEUCITE
    Year:
    Country: Rwanda
  • Sample n°19029 : abondant feldspar laths in vesicular lava
    Minerals: FELDSPAR
    Year:
    Country: Rwanda
  • Sample n°19030 : large crystals in pale matrix
    Minerals: AUGITE
    Year:
    Country: Rwanda
  • Sample n°19031 : abundant large crystals in matrix
    Minerals: AUGITE
    Year:
    Country: Rwanda
  • Sample n°19330 : coarse-crystalline vein
    Minerals: FERBERITE
    Year: 2020
    Country: Rwanda
  • Sample n°19331 : group of crystals with porous interior
    Minerals: FERBERITE
    Year: 2020
    Country: Rwanda
  • Sample n°19332 : ferberite alteration, var ferrotungstite
    Minerals: FERBERITE HYDROKENOELSMOREITE
    Year: 2020
    Country: Rwanda
  • Sample n°19579 : thick crust
    Minerals: CRYPTOMELANE
    Year:
    Country: Rwanda
  • Sample n°19636 : radial feldspar aggregates with dark core, and augite phenocrysts, in kivite
    Minerals: PLAGIOCLASE AUGITE
    Year:
    Country: Rwanda
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