General Information:
Chemical Formula:
(NH4)2Fe++(SO4)2·6(H2O)
Composition:
(Molecular Weight = 392.14 gm)
Iron 14.24 % Fe
Hydrogen 5.14 % H
Sulfur 16.35 % S
Nitrogen 7.14 % N
Oxygen 57.12 % O
Empirical Formula:
(NH4)2Fe2+(SO4)2·6(H2O)
IMA Status:
Approved IMA 1964
Physical Properties:
Cleavage:
[102] Perfect, [010] Distinct
Color:
light green.
Density:
1.8 - 1.862, Average = 1.83
Diaphaniety:
Transparent
Hardness:
2-2.5 - Gypsum-Finger Nail
Luster:
Vitreous (Glassy)
Streak:
white
More details...