Home Cancrinite
VIII - Tectosilicates
Crystal habit of Cancrinite

Name   Cancrinite
Chemistry   Na6Ca[CO3|(AlSiO4)]·2H2O
Hardness   6
Lustre   vitreous
Colour   blue, colourless, grey green, yellow white
Streak   white 
Density [g/cm3]   2.4 - 2.5
Crystal habit   hexagonal, crystals short, prismatic, extremely rare
Cleavage, Fracture   [1010] perfect, fracture conchoidal to uneven
other characteristics and occurrences   in plutonic, SiO2-undersaturated rocks and metasomatic formation by alteration of nepheline in igneous rocks

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