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From the site: "Radiometric and fission-track age determinations of geologic materials from the continental US and Alaska."
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Gathering Resources...From the site: "Location, geologic and mineral economic data for world rare earth mines, deposits, and occurrences compiled from published and non-published sources. Geographic...-
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Gathering Resources...From the site: "Systematic geochemical and mineralogical survey of soil horizons analyzed using a consistent set of methods, sample spacing 1 per 1,600 sq km."-
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Gathering Resources...From the site: "National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for...-
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Gathering Resources...From the site: "Geochemical analyses of sediment samples throughout the U.S. collected by the hydrogeochemical and stream sediment reconnaissance (HSSR) phase of the National...-
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Gathering Resources...There is a growing demand for commodities (elements, compounds, minerals) used in today's advanced technologies. Critical minerals are usually found in ore deposits that are...-
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Gathering Resources...Coal and coal byproducts may be economically important resources if enriched in critical minerals such as rare earth elements. The organic carbon they contain could be converted...-
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Gathering Resources... -