Geochemistry of tourmaline (schorlite) from granites, aplites and pegmatites from Northern Portugal

Details Geochemistry of tourmaline (schorlite) from granites, aplites and pegmatites from Northern Portugal Geochemistry of tourmaline (schorlite) from granites, aplites and pegmatites from Northern Portugal

Aug 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974gecoa..38.1307n&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 38, Issue 8, pp.1307-1317

Computer Science

10

Scientific paper

The major, minor and trace element chemistry of schorlites from Hercynian granitoids in Northern Portugal indicates that the composition of schorlites varies systematically in comagmatic sequences of granite, aplite and pegmatite. The compositional variation appears to be the result of a magmatic fractionation process. A subsequent recrystallization has not appreciably altered the chemistry of these schorlites. Schorlite coexisting with biotite and muscovite contains more Ti, Mg, La, Ce and less Fe 2+ + Fe 3+ than sehorlite coexisting with muscovite alone.

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