4-8-018: skarn - Pima District - Pima Mine

Details

Specimen Number4-8-018Alternate NumberP-8CommentsDiopside-cummingtonite-chlorite skarn. Collected 2 ft. from contact of P-7 (4-8-017) with quartz monzonite porphyry, and is a lithic arenite unit that was of slightly different composition compared to P-7. Bands of this material are interbedded stratigraphically with P-7 material. Garnet and pyroxene of this unit are laced with chlorite and spots/eyes of cummingtonite. Unit cut by veinlets containing quartz, pyrite, chalcopyrite, and molybdenite. Most of the light gray-green material is diopside, and the dark gray-green material is chlorite.In Teaching CollectionNoMineral(s)cummingtonitediopsidepyritequartzRock 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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4-8-018: skarn - Pima District - Pima Mine