General Information:
Chemical Formula:
Cu4Cd(SO4)2(OH)6·4(H2O)
Composition:
(Molecular Weight = 732.83 gm)
Cadmium 15.34 % Cd
Copper 34.69 % Cu
Hydrogen 1.93 % H
Sulfur 8.75 % S
Oxygen 39.30 % O
Empirical Formula:
Cu4Cd(SO4)2(OH)6·4(H2O)
Environment:
In brecciated marble. The cadmium dominant analogue of campigliaite.
IMA Status:
Approved IMA (Dana # Added)
Locality:
An abandoned adit in the Km3 area, Lavrion mining district, Attica peninsula, Greece.
Name Origin:
Named after Gerhard Niedermayr (b. 1941), mineralogist and geologist, Naturhistorisches Museum, Vienna, Austria, compiler of the regional mineralogy of the eastern Alps.
Physical Properties:
Cleavage:
[010] Perfect
Color:
bluish green.
Density:
3.36
Diaphaniety:
Transparent
Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., Encrustations - Forms crust-like aggregates on matrix.,
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
white
More details...