Sand image This sand is from Nannygoat Beach, Sapelo Island, Georgia. The sand is rich in quartz and also contains the fragments of mollusk shells. In the microscopic view linked below, a few black magnetite, ilmenite, and/or rutile grains can be seen too.

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Sand Pic
e-mail to Railsback (rlsbk@gly.uga.edu)
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UGA Geology Department web page