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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: rates assured
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[Post New]1 Jul 2008 17:11:02 IST
    Subject: rates assured
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shikhar.jain50 (47)

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what is pyrolusite
    
[Post New]1 Jul 2008 17:30:00 IST
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akku (1142)

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mineral essentially consisting of MnO2(manganese oxide)-soft ,black, appears amorphous
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[Post New]1 Jul 2008 17:35:45 IST
    Subject: Re:rates assured
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kria (478)

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pyrolusite IS AN IMPORTANT ORE OF Mn..(MANGANESES


Color is steel gray to a solid black in earthy specimens.


Luster is metallic to dull in weather or thinly crusted specimens


POWDER FORM..IT EXISTS
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[Post New]1 Jul 2008 17:42:47 IST
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shikhar.jain50 (47)

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can you tell me its exact structure................................
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[Post New]1 Jul 2008 17:54:10 IST
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kria (478)

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  Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/mnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.14(1), 1.63(0.5), 2.41(0.5),


 


MORE ON GIVING U A LINK SEE THERE


http://webmineral.com/data/Pyrolusite.shtml
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