Molybdenum and Tungsten Contents of Five CRPG and Eight ANRT Geochemical Reference Materials |
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| Authors: | Esma CAMPBELL Philip J ARUSCAVAGE |
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| Institution: | U.S. Geological Survey Reston, Va. 22092, USA |
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| Abstract: | Mo and W have been determined in five CRPG and eight ANRT geochemical reference samples by spectrophotometric - zinc dithiol procedures. Although data are lacking for adequate comparisons on most samples, our data for tungsten in GIT-IWG MA-N and GIT-IWG BE-N are very near the presently proposed values. |
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