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Precious Metals
Facts and statistics about the precious metals: gold, silver, and platinum. Learn about karat measurements for gold, gold colors, silver mining areas of the United States, platinum supply and demand, and related topics. Includes related links. From Emporia State University (Kansas) earth science lecturer and map librarian Susan Ward Aber.
http://www.emporia.edu/earthsci/amber/go340/gold.htm
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