Cristobalite in Volcanic Ash of the Soufriere Hills Volcano Montserrat, British West Indies Baxter, P. J. ; Bonadonna, C. ; Dupree, R. ; Hards, V. L. ; Kohn, S. C. ; Murphy, M. D. ; Nichols, A. ; Nicholson, R. A. ; Norton, G. ; Searl, A. ; Sparks, R. S. J. ; Vickers, B. P. Abstract Publication: Science Pub Date: February 1999 DOI: 10.1126/science.283.5405.1142 Bibcode: 1999Sci...283.1142B