Home Dioptase
VIII - Cyclosilicates
Crystal habit of Dioptase

Name   Dioptase
Chemistry   Cu6[Si6O18]·6H2O
Hardness   5
Lustre   vitreous
Colour   emerald green, transparent, translucent
Streak   green 
Density [g/cm3]   3.3
Crystal habit   trigonal, crystals prismatic, pseudohexagonal (twins)
Cleavage, Fracture   [1011] perfect, fracture conchoidal to uneven
other characteristics and occurrences   oxidation zone of copper ore deposits and in cavities of massive copper minerals

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