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IV - Oxides
Crystal habit of Wolframite Wolframite

 
Name   Wolframite
Chemistry   (Fe,Mn)WO4
Hardness   5 - 5.5
Lustre   greasy metallic
Colour   brownish black to iron black
Streak   yellow brown, deep brown to black 
Density [g/cm3]   7.1 - 7.5
Crystal habit   monoclinic, crystals thick tabular, striated
Cleavage, Fracture   [010] perfect, fracture uneven
other characteristics and occurrences   mixed crystals of
ferberite  = Fe[WO]4
huebnerite = Mn[WO]4
pegmatitic-pneumatolytic origin
   

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