A reconnaissance of the boron isotopic composition of tourmaline

Details A reconnaissance of the boron isotopic composition of tourmaline A reconnaissance of the boron isotopic composition of tourmaline

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53..911s&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 53, Issue 4, pp.911-916

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A preliminary investigation of the boron isotopic composition of tourmaline from some boron-rich associations has been made. The results for tourmaline from metasedimentary parageneses ( n = 12) range from 11 B = -22 to +22 per mil. These data mainly fall between the boron isotopic compositions of normal marine sediments with 11 B = -2 to +5 per mil and seawater with 11 B = +39.5 per mil. Tourmaline samples from granitic pegmatites ( n = 6), on the other hand, range from 11 B = -12 to -5 per mil. The data provide a rudimentary indication of the range of boron isotopic variation in tourmaline, some of the processes leading to this range, and some possible geochemical tracer applications.

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