Ammoniojarosite

General Information:
 Chemical Formula:
(NH4)Fe+++3(SO4)2(OH)6
 Composition:
(Molecular Weight = 479.75 gm)
Iron 34.92 % Fe
Hydrogen 2.10 % H 
Sulfur 13.37 % S 
Nitrogen 2.92 % N 
Oxygen 46.69 % O 
 Empirical Formula:
(NH4)Fe3+3(SO4)2(OH)6
Physical Properties:
 Color:
yellow.
 Density:
3.02
 Diaphaniety:
Transparent
 Hardness:
3.5-4.5
 Luminescence:
Non-fluorescent.
 Luster:
Earthy (Dull)
 Streak:
light yellow
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