Sanderite

General Information:
 Chemical Formula:
MgSO4·2(H2O)
 Composition:
(Molecular Weight = 138.38 gm)
Magnesium 17.56 % Mg
Hydrogen 1.46 % H 
Sulfur 23.17 % S 
Oxygen 57.81 % O 
 Empirical Formula:
Mg(SO4)·(H2O)
 Environment:
A inadequately characterized mieral.
 Locality:
Efflorescences on kieserite at the Hansa I shaft, Empelde, and the Niedersachsen shaft, near Wathlingen, Austria.
 Name Origin:
Named for Bruno Sander (1884-1979), Autrian geologist, Alte Universitat, Innsbruck.
Physical Properties:
 Color:
white.
 Density:
2.37
 Habits:
Efflorescences - Crystals covering matrix, generally produced from transpiro-evaporation., ,
 Streak:
white
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