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  Home  >>  Mineral Encyclopedia  >>  Mineral Photos  >>  Cyanotrichite-Cyanotrichite
Cyanotrichite
Chemical
Formula
 Cu4Al2[(OH)12|SO4]·2H2O
Species
 Sulfates
Crystal
System
 Orthorhombic
Mohs
Scale
 1-3
Specific
Gravity
 2.76
Color
 sky-blue, azure-blue
Streak
 light blue
Luster
 Silky
Refractive
Index
 n = 1.588 n = 1.617 n = 1.655
Crystal Habit：Occurs as velvet-, wool- or cotton-like aggregates and coatings comprised of minute acicular crystals; also radial-fibrous or tufted.
Cyanotrichite58
Cyanotrichite58
Cyanotrichite53
Cyanotrichite53
Cyanotrichite45
Cyanotrichite45

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