Specimen Number4-8-046Alternate NumberSM-6CommentsLaramide age quartz monzonite porphyry. Potassically altered, with K-spar veining and flooding, as well as groundmass biotitization. Stockwork veins contain quartz + K-spar + chalcopyrite + pyrite. Plagioclase appears chalky and is sericitized. Ore zone material. K/Ar age is 70 my.In Teaching CollectionNoMineral(s)chalcopyritefeldsparquartzsericiteRock Namealtered quartz monzoniteDistrictSan ManuelMineSan ManuelExternal LinkMindatDeposit TypePorphyry CopperGeo-Coords[1] Reference MaterialACL-110: Mine staff San Manuel Division, 1963, Magma Copper Company San Manuel Division General Information Booklet, internal company report, 21 p.
ACL-111: Mine staff San Manuel Division, 1969, Magma Copper Company San Manuel Division General Information Booklet, internal company report, 11 p.
ACL-112: Mine staff San Manuel Division, 1970, Magma Copper Company San Manuel Division General Information Booklet, internal company report, 14 p.
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.
4-8-046: altered quartz monzonite - San Manuel District - San Manuel Mine. Franklin College Collections, accessed 07/06/2026, https://digitalcollections.franklin.uga.edu/nodes/view/33156