4-8-017: skarn - Pima District - Pima Mine

Details

Specimen Number4-8-017Alternate NumberP-7CommentsGarnet skarn. Located 1 ft. from 25 ft. thick quartz monzonite porphyry dike. Composed of andradite, chlorite, K-spar, and chalcopyrite. Milky quartz veins with chalcopyrite and pyrite, with minor molybdenite are common, with significant chlorite haloes on either side of the veins. Runs 0.01 to 0.02% Mo, and 1% Cu. This material made grade control difficult within the overall orebody. Note that sulfides are both vein controlled as well as disseminated.In Teaching CollectionNoMineral(s)chalcopyritegarnetpyritequartzRock NameskarnDistrictPimaMinePimaExternal LinkMindatGeo-LocationundefinedSub-LocationundefinedDeposit TypePorphyry CopperGeo-Coords^[1]Reference MaterialACL-109: Thurmond, R.E., and Storms, W.R., 1958, Discovery and Development of the Pima Copper Deposit, Pima Mining Co., Pima County, Arizona, Bur. Mines Inform. Circ. 7822, 19 p.

ACL-113: Thurmond, R.E., Olk, J.F., Komadina, G.A., Journeay, J.A., Spaulding, E.D., and Hernlund, R.W., 1958, PIMA: a three-part story, Min. Eng., p. 453-462.

ACL-121: Langlois, J.D., 1976, Geology of the Cyprus Pima mine, Pima County, Arizona, in Jenney, J.P., and Hauck, H.R., eds., AZ Geol. Soc. Digest Volume XI, Proceedings of the Porphyry Copper Symposium, Tucson, AZ, March 18-20, p. 103-114.

ACL-153: Cooper, J.R., 1960, Some Geologic Features of the Pima Mining District, Pima County, Arizona; U.S. Geol. Surv. Bull. 1112-C, Washington, D.C., 40 p.

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4-8-017: skarn - Pima District - Pima Mine