Sand from Padre Island, Texas
This sample is from the Gulf side of the Island.
Significance in the Environment:
Greenberg, Gary, A GRAIN OF SAND: NATURE'S SECRET WONDER, Voyageur Press, 2008.
Welland, Michael, SAND: THE NEVER ENDING STORY, University of California Press, 2009.
(Good Information on the microscopy of sand, Great site for more information on microscopy in general)
(Good Information on Sand with links to more information on sand)
(Brief, very informative video on what can be learned from the shape of a sand grain.)