Amarillite

General Information:
 Chemical Formula:
NaFe++(SO4)2·6(H2O)
 Composition:
(Molecular Weight = 379.06 gm)
Sodium 6.07 % Na
Iron 14.73 % Fe
Hydrogen 3.19 % H 
Sulfur 16.92 % S 
Oxygen 59.09 % O 
 Empirical Formula:
NaFe2+(SO4)2·6(H2O)
Physical Properties:
 Cleavage:
[110] Good
 Color:
greenish yellow or light yellow.
 Density:
2.19
 Diaphaniety:
Transparent
 Hardness:
2.5-3 - Finger Nail-Calcite
 Luster:
Vitreous - Adamantine
 Streak:
white
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