Specimen Number34-4-021Alternate Number18748CommentsAndesite.In Teaching CollectionNoMineral(s)feldsparbiotiteRock NameandesiteDistrictBinghamMineBingham CanyonExternal LinkMindatGeo-LocationRailroad cut N of Keystone Gulch.Deposit TypePorphyry CopperGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of GeoscienceReference MaterialACL-124: Bray, R.E., and Wilson, J.C., eds., 1975, Guidebook to the Bingham Mining District, SEG Field trip Guidebook, October 23, 1975, 156 p.
34-4-021: andesite - Bingham District - Bingham Canyon Mine. Franklin College Collections, accessed 10/11/2025, https://digitalcollections.franklin.uga.edu/nodes/view/54129