Isotopic fractionation of copper during silicate melt evaporation: effects of sulfur, fO2, and temperature - Guillaume Florin; Paul Pangritz; Christian J. Renggli; Philipp Gleißner; Jasper Berndt; Arno Rohrbach; Harry Becker; Stephan Klemme (Geochimica et Cosmochimica Acta, 2025)