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Mar 07

Tungsten Carbide - How hard is it? How do you measure such things??


The Mohs scale was devised by Friedrich Mohs in 1812 and has been a valuable aid to identifying minerals ever since. Here are the ten standard minerals in the Mohs scale.......

Read on ......http://geology.about.com/library/bl/blmohsscale.htm

 

Posted by Jay Roberts at 10:35 PM | Permalink

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