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U-Pb SHRIMP and 40Ar/39Ar geochronologic data and backscatter electron (BSE) and panchromatic cathodoluminescent (CL) imagery of sample materials for study of dikes, country rock, and alteration systems, Butte, U.S.A.

October 17, 2018

These data are for a multidisciplinary study of dikes, country rock, and alteration systems, Butte, U.S.A. Results of the study are described and interpreted in Lund and others (2018). Data included are U-Pb SHRIMP geochronology for quartz porphyry dikes, 40Ar/39Ar thermochronologic data for biotite, hornblende, and K-feldspar from Butte granite country rock, and 40Ar/39Ar thermochronologic data for white mica and K-feldspar from alteration zones around lode veins. Also included are backscatter electron (BSE) and panchromatic cathodoluminescent (CL) imagery of minerals from samples dated by 40Ar/39Ar. These data are shared to meet open data requirements for interpretive report: Lund, K., McAleer, R.J., Aleinikoff, J.N., Cosca, M.A., and Kunk, M.J., 2018, Two-event lode-ore deposition at Butte, USA: new 40Ar/39Ar and U-Pb documentation of discrete Ag-Au-polymetallic lodes overprinted by Cu-lode and stockwork Cu-Mo ore systems: Ore Geology Reviews, v. 102, p. 666-700. https://doi.org/10.1016/j.oregeorev.2018.05.018