Crisocola

Structural context

Chrysocolla
Crystal System orthorhombic

Chemical context

Stoichiometric formulas

Chrysocolla
mindat.org
  • March 13, 2023Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O, x < 1
IMA
  • March 13, 2023(Cu2-xAlx)H2-xSi2O5(OH)4 · nH2O
mineralogy.rocks
  • Aug. 30, 2022(Cu2+2-xAlx)H2-xSi2O5(OH)4·nH2O

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • bluish green
  • blackish blue
        Color noteOriginal color note from the source
        Green, bluish green, blue, blackish blue to black, or brown and rarely yellow
        StreakStreak entities, recognized using a custom trained NER model
        • light green
            Streak noteOriginal streak note from the source
            Light green (unknown for black or yellow varieties)
            Lustre
            Vitreous
            Waxy
            Earthy
            Fracture
            Irregular/Uneven
            Sub-Conchoidal
            Transparency
            Translucent
            Opaque
            Luminescence
            None
            Tenacity
            brittle
            Hardness
            2.5—3.5
            Measured density
            1.93—2.4