Abstract
Rare earth element concentrations in the minerals biotite and muscovite from the mica schist country rocks of the Etta pegmatite and tourmalines from the Bob Ingersoll pegmatite have been measured by INAA and CNAA. The concentrations range from 10−4 g/g to 10−10 g/g. The REE patterns of biotite, muscovite and tourmaline reported herein are highly fractionated from light to heavy REE. The REE concentrations in biotite and muscovite are high and indigenous. The pegmatite tourmalines contain low concentrations of REE. Variations in tourmaline REE patterns reflect the geochemical evolution of pegmatite melt/fluid system during crystallization.
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Work supported by the U. S. Department of Energy under Contract DE-AC06-76RLO 1830.
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Laul, J.C., Lepel, E.A. Rare earth element patterns in biotite muscovite and tourmaline minerals. Journal of Radioanalytical and Nuclear Chemistry, Articles 112, 461–471 (1987). https://doi.org/10.1007/BF02132378
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DOI: https://doi.org/10.1007/BF02132378