Home Willemite
VIII - Nesosilicates		 Crystal habit of Willemite Willemite
 
Name   Willemite
Chemistry   Zn2[SiO4]
Hardness   5.5
Lustre   greasy - vitreous
Colour   colourless and in all colours, often green yellow, transparent, translucent
Streak   white 
Density [g/cm3]   4.0 - 4.2
Crystal habit   trigonal, crystals mostly small and prismatic
Cleavage, Fracture   [0001], [1120] poor, fracture conchoidal to uneven
other characteristics and occurrences   strongly fluorescent in UV-light
in metamorphosed silicate containing zinc ore deposits, especially with franklinite (ZnFe2O4) and zincite (ZnO) in Franklin, New Jersey
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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