4-8-009: diabase - Copper Mountain District - Morenci Mine

Details

Specimen Number4-8-009Alternate NumberM-9CommentsEarly Tertiary diabase, youngest intrusion in the Morenci complex. Contains a few pyritic veinlets, now chalcocite-coated, and sparse chrysocolla and other copper oxides. Weakly argillized by supergene activity with some montmorillonite after plagioclase and kaolin along fractures. It has been speculated that the diabase was intruded during final retrograde stages of mineralization of the main Morenci system, similar to other SW US porphyry districts and deposits.In Teaching CollectionNoMineral(s)chalcocitemontmorillonitepyritequartzRock NamediabaseDistrictCopper MountainMineMorenciExternal LinkMindatGeo-LocationundefinedSub-LocationundefinedDeposit TypePorphyry CopperGeo-Coords^[1]Reference MaterialACL-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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4-8-009: diabase - Copper Mountain District - Morenci Mine

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4-8-009: diabase - Copper Mountain District - Morenci Mine