Amarantite

General Information:
 Chemical Formula:
Fe+++(SO4)(OH)·3(H2O)
 Composition:
(Molecular Weight = 222.96 gm)
Iron 25.05 % Fe
Hydrogen 3.16 % H 
Sulfur 14.38 % S 
Oxygen 57.41 % O 
 Empirical Formula:
Fe3+(SO4)(OH)·3(H2O)
Physical Properties:
 Cleavage:
[010] Perfect, [100] Perfect
 Color:
brown red, orange red, pink, or red.
 Density:
2.189 - 2.286, Average = 2.23
 Diaphaniety:
Transparent
 Hardness:
2.5 - Finger Nail
 Luster:
Vitreous (Glassy)
 Streak:
yellow
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