1) Symbol of Missouri 
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 varia...