General Information:
Chemical Formula:
ZnSO4·7(H2O)
Composition:
(Molecular Weight = 287.56 gm)
Zinc 22.74 % Zn
Hydrogen 4.91 % H
Sulfur 11.15 % S
Oxygen 61.20 % O
Empirical Formula:
Zn(SO4)·7(H2O)
Name Origin:
Named after its original locality in Goslar, Germany
Physical Properties:
Cleavage:
[010] Perfect
Color:
blue, brown, colorless, green, or green blue.
Density:
2
Diaphaniety:
Transparent to Translucent
Habits:
Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite)., Massive - Uniformly indistinguishable crystals forming large masses., Acicular - Occurs as nee dle-like crystals.
Hardness:
2-2.5 - Gypsum-Finger Nail
Luminescence:
None.
Luster:
Vitreous (Glassy)
Streak:
white
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