Density Gradient Separation of Long Canyon Sand, Near Sedona, AZLayer 1, 1.0 to 1.6 grams per cubic centimeter. 
 
 
 
 
 
Layer 2, 1.6 to 2.2 grams per cubic centimeter. 
 
 
  
Layer 3, 2.2 to 2.6 grams per cubic centimeter. 
Layer 4, 2.6 to 2.8 grams per cubic centimeter. About 90% by weight of the sand was in this fraction. Quartz dominated this layer. 
Layer 5, >2.8 grams per cubic centimeter. 
 
 
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