The Hawley medalists for 2004 are James E. Mungall and James M. Brenan. Their paper “Experimental evidence for the chalcophile behavior of the halogens” was selected as the best paper published in The Canadian Mineralogist in 2003. It appeared in Volume 41, Part 1, pages 207–220. Drs. Mungall and Brenan are professors in the Department of Geology at the University of Toronto.

The paper is based on the observation that “unusual abundances of halogen-rich minerals are found in close spatial association with base-metal and precious-metal sulfide mineralization cogenetic with igneous rocks in several localities worldwide.” Their investigation of the partitioning...

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