General Information:
Chemical Formula:
Cu3(AsO4)(OH)3
Composition:
(Molecular Weight = 380.58 gm)
Copper 50.09 % Cu
Arsenic 19.69 % As
Hydrogen 0.79 % H
Oxygen 29.43 % O
Empirical Formula:
Cu3(AsO4)(OH)3
Name Origin:
From the Greek, klineis - "to incline" and klas - "to break."
Physical Properties:
Cleavage:
[001] Perfect
Color:
dark verdigris green, blackish blue green, or blackish green.
Density:
4.19 - 4.4, Average = 4.29
Diaphaniety:
Subtransparent to translucent
Habits:
Spherical - Spherical, rounded aggregates., Encrustations - Forms crust-like aggregates on matrix., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibn ite)
Hardness:
2.5-3 - Finger Nail-Calcite
Luminescence:
None.
Luster:
Vitreous - Pearly
Streak:
bluish green
More details...