Geopic of the week: Arkansas Quartz Crystals

quartz

Above is a picture of the State Mineral of Arkansas, quartz.  Quartz crystals are found in the Ouachita Mountains from Little Rock to Oklahoma.  The crystals grew in fractures and vugs in the sandstone and shale as hot, mineral-rich water from the compression of the Ouachita Mountains circulated through the bedrock around 260 million years ago.

Like all crystals, quartz grows in a distinct shape.  The six-sided shape of quartz is due to the arrangement of the molecules (SiO2) that comprise it, which pack together in this shape naturally.  Quartz crystals are prized for their beauty, but are also useful in devices, such as radios and clocks, because of their electrical properties.

Mineral collectors flock to Arkansas for a chance to find world-class quartz crystals.  There are 7 locations around the Ouachitas where you can prospect for quartz crystals for a fee.

For more views of Arkansas quartz crystals click here

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