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 Mozarkite is a form of chert (flint). It is the state rock of Missouri. The name is a "portmanteau," formed from Mo (Missouri), zark (Ozarks), and ite (meaning rock). Mozarkite consists essentially of silica (quartz - SiO2) with varying amounts of chalcedony. It has won distinction as a particular form or variety of chert because of its unique variation of colors and its ability to take a high polish. It has the hardness of 7-7.5 on the Mohs scale, which qualifies it as a suitable material for semi-precious gemstone. (source: Wikipedia)  Return to List Back to Michael's Hobbies page Back to Michael Marcotte's HomePage 
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