TY - RPRT TI - Chemistry, mineralogy, and petrology of amphibole in Mount St. Helens 2004-2006 dacite AU - Carl R. Thornber AU - John S. Pallister AU - Heather Lowers AU - Michael C. Rowe AU - Charlie Mandeville AU - Gregory P. Meeker PY - 2008 DO - 10.3133/pp175032 UR - https://pubs.usgs.gov/publication/pp175032 ID - pp175032 ER -