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Scandium
Metal element with symbol Sc and atomic number 21 <http://periodic.lanl.gov/21.shtml>
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China's rare-earth industry [More info]
Reviews production, consumption, and reserves and important policies and regulations regarding production and trade of rare earths, including recently announced export quotas.
Geochemical and mineral maps from soils of the conterminous United States [More info]
Geochemical and mineralogical maps along with a histogram, boxplot, and empirical cumulative distribution function plot for each element or mineral whose data are provided in DS-801
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