Leningradite

General Information:
 Chemical Formula:
PbCu++3(VO4)Cl2
 Composition:
(Molecular Weight = 583.68 gm)
Vanadium 8.73 % V 
Copper 32.66 % Cu
Lead 35.50 % Pb
Chlorine 12.15 % Cl
Oxygen 10.96 % O 
 Empirical Formula:
PbCu3(VO4)Cl2
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
red or reddish brown.
 Density:
4.8
 Diaphaniety:
Transparent
 Hardness:
4.5 - Between Fluorite and Apatite
 Luster:
Vitreous (Glassy)
 Streak:
orange red
More details...