Home Pyrolusite
IV - Oxides		 Crystal habit of Pyrolusite Pyrolusite
 
Name   Pyrolusite
Chemistry   MnO2
Hardness   2- -6
Lustre   metallic
Colour   grey white, yellowish to dark grey
Streak   black 
Density [g/cm3]   4.5 - 5.0
Crystal habit   tetragonal, crystals columnar
Cleavage, Fracture   [110] perfect, fracture uneven to conchoidal
other characteristics and occurrences   radial, earthy, dendritic, often pseudomorph to manganite (MnOOH)
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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