Home Zoisite
VIII - Sorosilicates (Epidote Group)
Crystal habit of Zoisite Zoisite

Name   Zoisite
Chemistry   Ca2Al3[O|OH|SiO4|Si2O7]
Hardness   6
Lustre   vitreous
Colour   grey, apple green, brown, blue, red
Streak   white 
Density [g/cm3]   3.2 - 3.4
Crystal habit   orthorhombic, crystals long, prismatic, striated, tabular
Cleavage, Fracture   [001] perfect, fracture uneven to conchoidal
other characteristics and occurrences   thulite   = pink (Mn2+-content)
tanzanite = blue (Cr-, Sr-content)
anyolite  = green
in metamorphic rocks at high pressure and high temperature (eclogite-facies)

This page in German - Diese Seite in Deutsch
© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
These recommendations are believed to be correct. However, no guarantee of their accuracy is given. Therefore, purchasers shall make their own tests to determine suitability for their use. These products are offered for industrial and related uses (e.g. research and development) only. However the user must take the necessary precautions appropriate for products containing chemicals. This description does not imply the absence of any patents, the responsibility whatsoever solely rests with the user.