Metallic Minerals

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Created by
imogen

Cards (4)

  • Galena
    colour : lead grey
    streak : lead grey
    shape : cubic crystals
    lustre : metallic
    cleavage/fracture : 3 good cleavage planes at 90 degrees
    scratched by : copper coin
    not scratched by : finger-nail
    hardness : 2.5
    density : 7.5 g/cm3
    HCl test : no reaction
  • Hematite (/haematite)
    colour : rusty red / brown red
    streak : cherry red
    shape : botryoidal / massive crystals
    lustre : metallic
    cleavage/fracture : none / poor
    scratched by : steel pin
    not scratched by : copper coin
    hardness : 5.5-6.5
    density : 5.1 g/cm3
    HCl test : no reaction
  • Pyrite (fool's gold)

    colour : brass yellow / gold
    streak : green -ish black
    shape : cubic crystals
    lustre : metallic
    cleavage/fracture : none
    scratched by : none
    not scratched by : steel pin
    hardness : 6
    density : 5 g/cm3
    HCl test : no reaction
  • Chalcopyrite

    colour : bronze yellow
    streak : black
    shape : massive
    lustre : metallic
    cleavage/fracture : none / poor
    scratched by : steel pin
    not scratched by : copper coin
    hardness : 4
    density : 4.2 g/cm3
    HCl test : no reaction