4-8-028: diabase - Mineral Creek District - Ray Mine

Details

Specimen Number4-8-028Alternate NumberR-8CommentsDiabase, potassically altered. Biotite-orthoclase alteration results in a finely mottled, dark intergrowth of biotite with minor chlorite. Plagioclase is altered to biotite + sericite, with rare replacement by K-spar. Minor gray-green chlorite + quartz + sericite occurs along selvages and fractures, and chalcopyrite is common. From near the west edge of potassic alteration in the Ray pit, this material tends to run about 0.5% Cu.In Teaching CollectionNoMineral(s)chalcopyritechloritepyritequartzRock NamediabaseDistrictMineral CreekMineRayExternal LinkMindatGeo-LocationundefinedSub-LocationundefinedDeposit TypePorphyry CopperGeo-Coords^[1]Reference MaterialACL-115: Hoelscher, S.A., 1977, Structural Geology of the Ray mine, Recent Developments, AZ Conference AIME, Mining Geology Division Meeting, Ray Mine, AZ, April 16, 1977, 18 p.

ACL-116: Cornwall, H.R., and Banks, N.G., 1977, Igneous Rocks and Copper Mineralization in the Ray Porphyry Copper District, Arizona, U.S.G.S. Open-file report 77-255, 1977, 10 p.

ACL-117: Gambell, N.A., 1977, Geology and Mineralization of the Ray Silicate Orebody, AZ Conference AIME, Mining Geology Division Meeting, Ray Mine, AZ, April 16, 1977, 15 p.

ACL-118: Gambell, N.A., 1977, A Review of the Ray Orebody, AZ Conference AIME, Mining Geology Division Meeting, Ray Mine, AZ, April 16, 1977, 19 p.

ACL-121: Gambell, N.A., 1976, Geology and Mineralization of the Ray silicate orebody, 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. 35.

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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4-8-028: diabase - Mineral Creek District - Ray Mine

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4-8-028: diabase - Mineral Creek District - Ray Mine