Specimen Number5-3-006Alternate NumberSB-5CommentsDacite porphyry. From north of Oxide Pit and east of mineralized zone of Silverbell. Shows rounded, lobate quartz eyes + plagioclase and K-spar phenocrysts in a groundmass of quartz + K-spar and minor fine-grained biotite. Rock is effectively unaltered.In Teaching CollectionNoMineral(s)biotitefeldsparquartzRock NamedaciteDistrictSilver BellMineSilver BellExternal LinkMindatGeo-LocationNorth of oxide pit; East of ore bodySub-LocationundefinedDeposit TypePorphyry CopperGeo-Coords[1] Reference MaterialACL-127: Dilbert, C., and Davis, S., 1981, Trip #10 Silver Bell-North Silver Bell Deposits, in Wilkins, J., coord., AZ Geol. Soc. And Univ. AZ 1981 Symposium on Relations of Tectonics to Ore Deposits in the southern Cordillera.
ACL-173: Anzalone, S.A., Beane, R.E., Davis, S.R., Graybeal, F.T., Guilbert, J.M., Oakley, C.A., Titley, S.R., and West, R.M., org., 1979, Society of Economic Geology Field Conference on Tucson-Area Porphyry Copper Deposits, Tucson, AZ, May 3-6, 1979, 205 p.
5-3-006: dacite - Silver Bell District - Silver Bell Mine. Franklin College Collections, accessed 06/06/2026, https://digitalcollections.franklin.uga.edu/nodes/view/31516