Other common minerals

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Created by
imogen

Cards (5)

  • Calcite

    colour : white
    streak : white
    shape : rhombic crystals
    lustre : vitreous
    cleavage/fracture : 3 good cleavage planes
    scratched by : copper coin
    not scratched by : finger-nail
    hardness : 3
    density : 2.7 g/cm3
    HCl test : reacts - fizzing / bubbling
  • Gypsum

    colour : white
    streak : white
    shape : fibrous crystals
    lustre : silky / pearly
    cleavage/fracture : 1 good cleavage plane
    scratched by : finger-nail
    not scratched by : N/A
    hardness : 2
    density : 2.3 g/cm3
    HCl test : no reaction
  • Fluorite

    colour : purple, green yellow, colourless
    streak : white
    shape : cubic crystals
    lustre : vitreous
    cleavage/fracture : 4 good cleavage planes
    scratched by : steel pin
    not scratched by : copper coin
    hardness : 4
    density : 3.1 g/cm3
    HCl test : no reaction
  • Barite

    colour : white
    streak : white
    shape : bladed crystals
    lustre : vitreous / pearly
    cleavage/fracture : 2 good cleavage planes at 90 degrees
    scratched by : steel pin
    not scratched by : copper coin
    hardness : 3-3.5
    density : 4.5 g/cm3
    HCl test : no reaction
  • Halite 

    colour : white
    streak : white, often stained
    shape : massive
    lustre : vitreous
    cleavage/fracture : 3 good cleavage planes at 90 degrees
    scratched by : finger-nail
    not scratched by : N/A
    hardness : 2.5
    density : 2.2 g/cm3
    taste/feel : tastes salty / feels waxy
    HCl test : no reaction