Baltic Sea Sand at Tallinn, Estonia
                These grains have been separated from the bulk
                  sand using LST (Lithium heteropolytungstate) and mounted in Melt Mount, 1.704
                  refractive index.
              
              
                Transmitted Oblique Off Crossed Circular Polarized Light
                
Definition/Function:
                Significance in the Environment:
                Characteristic Features:
                .
                Associated Particles:
                References:
                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.
                
                http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/artjun01/clsand.html
                
(Good Information on the microscopy of sand, Great site for more information on
                microscopy in general)
                
                http://www.scientificamerican.com/article.cfm?id=a-grain-of-sand-natures-secret-wonder
                
(Good Information on Sand with links to more information on sand)
                
                http://www.sciencelive.org/component/option,com_mediadb/task,play/idstr,Open-feeds_fsc_exploring_sedimentary_processes_fsc02_02_m4v/vv,-2/Itemid,97
                
(Brief, very informative video on what can be learned from the shape of a sand
                grain.)