This sand comes from the center of Santa Rosa Island, east of Pensacola, in Escambia County, Florida. It is essentially 100% quartz, and is so white that it looks like snow as it blows across the asphalt of Florida Highway 399.

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e-mail to Railsback (rlsbk@gly.uga.edu)
Railsback's main web page
UGA Geology Department web page