General Information:
Chemical Formula:
(Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O)
Composition:
(Molecular Weight = 846.73 gm)
Zinc 15.45 % Zn
Copper 37.52 % Cu
Hydrogen 1.90 % H
Carbon 0.71 % C
Sulfur 5.68 % S
Oxygen 38.74 % O
Empirical Formula:
Cu5Zn2(SO4)1.5(CO3)0.5(OH)10·3(H2O)
Environment:
Found in the mine dumps.
Locality:
Glucksrad mine, near Oberschulenberg, Harz, Germany.
Name Origin:
Named for the locality.
Physical Properties:
Cleavage:
[???] Perfect
Color:
green blue or light green blue.
Density:
3.28
Diaphaniety:
Transparent
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Rosette - Bundled tabular aggregates resembling rose flower petals.,
Hardness:
2 - Gypsum
Luminescence:
Non-fluorescent.
Luster:
Silky
Streak:
pale blue blue
More details...