Auricalcite

Structural context

Aurichalcite
Crystal System monoclinicCrystal Class prismaticSpace Group P21/m

Chemical context

Stoichiometric formulas

Aurichalcite
mindat.org
  • March 13, 2023(Zn,Cu)5(CO3)2(OH)6Zn:Cu ratio is about 5:2, but may approach 2:1.
IMA
  • March 13, 2023(Zn,Cu)5(CO3)2(OH)6
mineralogy.rocks
  • Aug. 30, 2022(Zn,Cu2+)5(CO3)2(OH)6

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • pale green
  • sky blue
  • greenish blue
  • colourless
Color noteOriginal color note from the source
Pale green, sky blue, or greenish blue; colourless to light shades of blue or green in transmitted light
StreakStreak entities, recognized using a custom trained NER model
  • light blue
Streak noteOriginal streak note from the source
Light blue
Lustre
Silky
Pearly
Fracture
Irregular/Uneven
Transparency
Transparent
Luminescence
None
Tenacity
fragile
Hardness
1—2
Calculated density
3.93