TC-1-3-002: altered granodiorite - San Manuel District - San Manuel Mine

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Specimen NumberTC-1-3-002Alternate NumberSM-2 4-8-042CommentsOracle quartz monzonite, Precambrian host to San Manuel system. This sample collected 400 ft. closer to ore zone relative to sample SM-1, near the interface between propylitic and argillic alteration facies. Chlorite has largely replaced biotite, and plagioclase is mostly replaced by kaolinite and montmorillonite with minor, weakly birefringent sericite. Quartz and K-spar are unaltered. Overall, more altered compared to SM-1.In Teaching CollectionYesMineral(s)biotitechloritek-sparquartzRock Namealtered granodioriteDistrictSan ManuelMineSan ManuelExternal LinkMindatDeposit TypePorphyry CopperReference 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.

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TC-1-3-002: altered granodiorite - San Manuel District - San Manuel Mine

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TC-1-3-002: altered granodiorite - San Manuel District - San Manuel Mine