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Center for Mineral Resources: U.S. Geological Survey- University of Arizona, Department of Geosciences Porphyry Copper Deposit Life Cycles Field Conference, Southeastern Arizona, May 21-22, 2002
[unknown]
2005
Scientific Investigations Report
unpublished
Preserved Fulltext
1,445 ± 67 Ma 72.9 ± 1.7 Ma 75.9 ± 2.9 Ma 50 µ Zircon grain from deep biotite(-muscovite) grainte on west side of the Teacup pluton (Grayback Mountain). Early quartz-feldspar veins in xenolith in younger granite porphyry. Natural sulfate seep from quartz-sericite-pyrite in upper part of Riverside area.
doi:10.3133/sir20055020
fatcat:uexeyee6l5bztmepiuh3llh6sq