Home Talc
VIII - Phyllosilicates		 Crystal habit of Talc Talc
 
Name   Talc
(Steatite)
Chemistry   Mg3[(OH)2|Si3O10]
Hardness   1
Lustre   vitreous - pearly
Colour   colourless to light green, grey, brown
Streak   white
Density [g/cm3]   2.7 - 2.9
Crystal habit   monoclinic, crystals rarely
Cleavage, Fracture   [001] perfect, fracture uneven
other characteristics and occurrences   soapstone = dense talc
hydrothermal alteration of magnesium silicates (olivine ((Mg,Fe)2[SiO4]))
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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