Palmierite

General Information:
 Chemical Formula:
(K,Na)2Pb(SO4)2
 Composition:
(Molecular Weight = 469.47 gm)
Potassium 12.49 % K 
Sodium 2.45 % Na
Lead 44.13 % Pb
Sulfur 13.66 % S 
Oxygen 27.26 % O 
 Empirical Formula:
K1.5Na0.5Pb(SO4)2
Physical Properties:
 Color:
colorless or white.
 Density:
4.33
 Diaphaniety:
Transparent
 Hardness:
2 - Gypsum
 Luster:
Vitreous - Pearly
 Streak:
white
More details...