Specimen Number34-4-002Alternate Number18727CommentsStrongly silicified porphyritic monzonite, original k-spar phenocrysts completely leached or clay altered.In Teaching CollectionNoMineral(s)quartzkaoliniteField NotesUtah Copper Co. Upper Level.Rock Namesilicified monzoniteDistrictBinghamMineBingham CanyonExternal LinkMindatDeposit 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.