Home Laumontite
VIII - Tectosilicates (Zeolite Group)		 Crystal habit of Laumontite
 
Name   Laumontite
Chemistry   Ca[AlSi2O6]2·4H2O
Hardness   3.5 - 4
Lustre   vitreous
Colour   colourless, white, pink, yellow, brown
Streak   white 
Density [g/cm3]   2.2 - 2.3
Crystal habit   monoclinic
Cleavage, Fracture   [010], [110] perfect, fracture uneven
other characteristics and occurrences   secondary mineral in vesicles of basalts and andesites, also metamorphic formation
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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