Snake River Sand at Lyons Ferry
                This sample is from the Snake River. The sub-sample here
                  are from a concentration of the heavy minerals. They were
                  concentrated by density for analysis using lithium heteropolytunstantes.
              
              
                Transmitted Off Crossed Circular Polarized Light
                
Definition/Function:
                Significance in the Environment:
                Characteristic Features:
                Associated Particles:
                References:
                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)