General Information:
Chemical Formula:
Fe+++2(SO4)3·10(H2O)
Composition:
(Molecular Weight = 580.04 gm)
Iron 19.26 % Fe
Hydrogen 3.48 % H
Sulfur 16.58 % S
Oxygen 60.68 % O
Empirical Formula:
Fe3+2(SO4)3·10(H2O)
Name Origin:
Named after the German mineralogist, F. A. Quenstedt (1809-1889).
Physical Properties:
Cleavage:
[010] Perfect
Color:
white, light violet, or red violet.
Density:
2.14
Diaphaniety:
Transparent
Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., Granular - Generally occurs as anhedral to subhedral crystals in matrix.,
Hardness:
2.5 - Finger Nail
Luster:
Vitreous (Glassy)
Streak:
light violet blue
More details...