Georgiadesite

General Information:
 Chemical Formula:
Pb16(AsO4)4Cl14O2(OH)2 or Pb16(AsO4)4Cl14(OH)6
 Composition:
(Molecular Weight = 4,433.23 gm)
Arsenic 6.76 % As
Hydrogen 0.05 % H 
Lead 74.78 % Pb
Chlorine 11.20 % Cl
Oxygen 7.22 % O 
 Empirical Formula:
Pb16(AsO4)4Cl14O2(OH)2
Physical Properties:
 Cleavage:
None
 Color:
brownish yellow or white.
 Density:
6.3
 Hardness:
3.5 - Copper Penny
 Luster:
Resinous
 Streak:
white
More details...