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V - Sulfates
Cyanotrichite

 
Name   Cyanotrichite
Chemistry   Cu4Al2[(OH)12|SO4]·2H2O
Hardness   2
Lustre   silky
Colour   sky blue, light blue, dark blue
Streak   pale blue 
Density [g/cm3]   2.75
Crystal habit   orthorhombic
Cleavage, Fracture   fracture uneven
other characteristics and occurrences   formed by oxidation of copper ores together with other minerals of oxidation zones
   

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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