Specimen Number13-4-011Commentsfrom Crowe research collection; strongly argillically altered, large feldspars are completely clay altered, several however are replaced by pink aluniteIn Teaching CollectionNoMineral(s)alunitekaolinitequartzField Notesfrom mine highwallRock Namealtered rhyoliteDistrictSummitvilleMineSummitvilleExternal LinkMindatDeposit TypeEpithermal High SulfidationGeo-Coords[1] Reference MaterialACL-126: Lipman, P.W., Bethke, P.M., and Casadevall, T.J., 1982, Field Trip Guide, Relationship of Mineralization to Volcanic Evolution of the San Juan Mountains, Colorado, SEG Field Conference, September 19-24, 1982, 59p.
ACL-178: Davis, G. H., and VandenDolder, E.M., 1987, Geologic Diversity of Arizona and Its Margins: Excursions to Choice Areas; Ariz. Bur. Geol. and Min. Tech. Special Paper No. 5, Tucson, Arizona, 422 p.
13-4-011: altered rhyolite - Summitville District - Summitville Mine. Franklin College Collections, accessed 12/11/2025, https://digitalcollections.franklin.uga.edu/nodes/view/35083