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Dominant species
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Bieberite
Chemical
Formula
CoSO4·7H2O
Species
Sulfates
Crystal
System
Monoclinic
Mohs
Scale
2
Specific
Gravity
1.83
Color
Red-pink, flesh-red; colourless to pale rose in transmitted light.
Luster
Vitreous, Earthy
Refractive
Index
n = 1.477 n = 1.483 n = 1.489
Diaphaneity
Translucent, Opaque
Cleavage
PerfectOn perfect; on fair.
Crystal Habit:As crusts and stalactites.
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