Malachita

Structural context

Malachite
Crystal System monoclinicSpace Group P21/c

Chemical context

Stoichiometric formulas

Malachite
mindat.org
  • March 13, 2023Cu2(CO3)(OH)2
IMA
  • March 13, 2023Cu2(CO3)(OH)2
mineralogy.rocks
  • Aug. 30, 2022Cu2+2CO3(OH)2

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • bright green
  • yellowish green
    Color noteOriginal color note from the source
    Bright green, with crystals deeper shades of green, even very dark to nearly black; green to yellowish green in transmitted light.
    StreakStreak entities, recognized using a custom trained NER model
    • light green
    Streak noteOriginal streak note from the source
    Light green
    Lustre
    Silky
    Earthy
    Fracture
    Splintery
    Transparency
    Opaque
    Tenacity
    brittle
    Hardness
    3.5—4
    Measured density
    3.6—4.05
    Calculated density
    4