Magnesiocopiapite

General Information:
 Chemical Formula:
MgFe+++4(SO4)6(OH)2·20(H2O)
 Composition:
(Molecular Weight = 1,218.39 gm)
Magnesium 1.99 % Mg
Iron 18.33 % Fe
Hydrogen 3.47 % H 
Sulfur 15.79 % S 
Oxygen 60.41 % O 
 Empirical Formula:
MgFe3+4(SO4)6(OH)2·20(H2O)
Physical Properties:
 Cleavage:
[010] Perfect, [101] Indistinct
 Color:
green yellow, yellow, yellow green, or orange.
 Density:
2.08 - 2.17, Average = 2.12
 Diaphaniety:
Transparent to Translucent
 Hardness:
2.5-3 - Finger Nail-Calcite
 Luster:
Pearly
 Streak:
light yellow
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