Calciocopiapite

General Information:
 Chemical Formula:
CaFe+++4(SO4)6(OH)2·19(H2O)
 Composition:
(Molecular Weight = 1,216.15 gm)
Calcium 3.30 % Ca
Iron 18.37 % Fe
Hydrogen 3.32 % H 
Sulfur 15.82 % S 
Oxygen 59.20 % O 
 Empirical Formula:
CaFe3+4(SO4)6(OH)2·19(H2O)
 IMA Status:
Approved IMA 1961
Physical Properties:
 Color:
brownish yellow or grayish yellow.
 Density:
2.22
 Diaphaniety:
Transparent to Translucent
 Hardness:
2.5-3 - Finger Nail-Calcite
 Luster:
Pearly
 Streak:
yellow white
More details...