TC-1-3-001: altered granodiorite - San Manuel District - San Manuel Mine

Details

Specimen NumberTC-1-3-001Alternate NumberSM-1 4-8-041CommentsOracle quartz monzonite (actually a porphyritic quartz monzonite). This Precambrian host unit consists of quartz + perthitic orthoclase, biotite, and hornblende. Collected 1600 ft. from ore zone, and is weakly propylitized with primary biotite replaced by chlorite, plagioclase dusted by clay minerals, and with sparse epidote on thin microfractures. Minor calcite present with quartz. K-spar is fresh and unaltered. Quartz has faint bluish cast which fades toward the ore. Sparse mafic clots or xenoliths.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-1-3-001: altered granodiorite - San Manuel District - San Manuel Mine

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TC-1-3-001: altered granodiorite - San Manuel District - San Manuel Mine