General Information:
Chemical Formula:
Pb10Cu(CrO4)6(SiO4)2(F,OH)2
Composition:
(Molecular Weight = 3,052.68 gm)
Chromium 10.22 % Cr
Copper 2.08 % Cu
Silicon 1.84 % Si
Hydrogen 0.02 % H
Lead 67.87 % Pb
Oxygen 17.03 % O
Fluorine 0.93 % F
Empirical Formula:
Pb10Cu(CrO4)6(SiO4)2F1.5(OH)0.5
IMA Status:
Approved IMA 1963
Physical Properties:
Color:
brownish yellow, yellow, or honey brown.
Density:
5.8
Hardness:
3 - Calcite
Luster:
Vitreous (Glassy)
Streak:
yellow
More details...