Aurichalcite
Chemical Formula	(Zn,Cu)5[(OH)3|CO3]2
Species	Carbonates
Crystal System	Monoclinic
Mohs Scale	1-2
Specific Gravity	3.96
Color	Pale green, greenish blue, sky-blue; colorless to pale blue, pale green in transmitted light
Streak	Light blue
Luster	Silky, Pearly
Refractive Index	n = 1.655 n = 1.740 n = 1.744
Diaphaneity	Transparent
Cleavage	PerfectPerfect on and .
Fracture	Irregular/Uneven
Crystal Habit：Typically in tufted divergent sprays or spherical aggregates, may be in thick crusts; rarely columnar, laminated or granular
Geological Setting：A secondary mineral in oxidized copper and zinc ore deposits, typically as crusts.