gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.2.86 On Ecological-Geochemical Monitoring in Kamchatka (the Mutnovsky-Asachinsky Ore Region) Okrugin V. M. Stefanov J. M. Shuvalov R. A. Okrugina A. M. Stepanov I. I. Department of Physical-Chemical Methods of Analysis and Mineralogy, Institute of Volcanology FER RAS, Bulvar Piipa 9, Petropavlovsk-Kamchatsky, Russia 683006 (FAX 41500-54723) August–September 1994 58A 2 671 671 Copyright © 1994, The Mineralogical Society 1994