23-1-007: intensely altered volcanic - Summitville District - Summitville Mine

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Specimen Number23-1-007CommentsFrom Crowe research collection. A dozen or more samples. Intensely acid vapor-leached South Mountain latite, large euhedral feldspars to 1.5" completely gone, entire rock is either remnant quartz phenocrysts or silicified matrix material.In Teaching CollectionNoMineral(s)quartzRock Nameintensely altered volcanicDistrictSummitvilleMineSummitvilleExternal 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.

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23-1-007: intensely altered volcanic - Summitville District - Summitville Mine

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23-1-007: intensely altered volcanic - Summitville District - Summitville Mine