General Information:
Chemical Formula:
Pb4Zn2(SiO4)(Si2O7)(SO4)
Composition:
(Molecular Weight = 1,315.89 gm)
Zinc 9.94 % Zn
Silicon 6.40 % Si
Lead 62.98 % Pb
Sulfur 2.44 % S
Oxygen 18.24 % O
Empirical Formula:
Pb4Zn2(SiO4)(Si2O7)(SO4)
IMA Status:
Approved IMA 1979
Physical Properties:
Cleavage:
[010] Indistinct, [001] Indistinct
Color:
colorless, white, or light yellow.
Density:
6.07
Hardness:
4 - Fluorite
Luster:
Greasy (Oily)
Streak:
white
More details...