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  • Tags: Argillite

http://archives.library.eou.edu/images/2010.2.2189.jpg
"Baker [County] area mines - Highland Gold Mine Co. - Knapp Group - Sumpter, Or. Maps - circa 1901-1903" "Property of the Highland Gold Mines Co.- Knapp Group - Sumpter, Oregon - Granite, Grano-Diorite, Argillite - U.S. Deputy Mineral Surveyors"

Position: 4441 (2 views)

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