doi:10.1144/0016-76492008-007 2009; v. 166; p. 895-904 Journal of the Geological Society J.S. Denton, H. Tuffen, J.S. Gilbert and N. Odling The hydration and alteration of perlite and rhyolite Journal of the Geological Society service Email alerting to receive free email alerts when new articles cite this article click here request Permission to seek permission to re-use all or part of this article click here Subscribe to subscribe to Journal of the Geological Society or the Lyell Collection click here Notes Downloaded by Lancaster University on 19 August 2009 © 2009 Geological Society of London