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)

This page in German - Diese Seite in Deutsch
© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
These recommendations are believed to be correct. However, no guarantee of their accuracy is given. Therefore, purchasers shall make their own tests to determine suitability for their use. These products are offered for industrial and related uses (e.g. research and development) only. However the user must take the necessary precautions appropriate for products containing chemicals. This description does not imply the absence of any patents, the responsibility whatsoever solely rests with the user.