gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.1.181 Complexation of Cu²⁺ in Hydrothermal (25–175°C NaCl Brines: Results from in Situ EXAFS Spectroscopy Collings M. Sherman D. M. Ragnarsdottir K. V. Dept. of Earth Sciences, University of Bristol, Bristol UK BS8 1RJ, UK 1998 62A 1 345 346 Copyright © 1998, The Mineralogical Society 1998