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Oxidized Copper Mineralization along the Continental Fault near Butte, Montana

By Theodore H. Eyde


Located in the fault zone of the Continental fault near the western edge of Boulder batholith of southwestern Montana the oxidized copper deposits are developed by three open pit mines, one of which is a presently in operation. Copper has been deposited by descending cold solutions which have leached copper from the surrounding quartz monzonite and deposited within the crushed fault zone. Local high grade \u27bunches\u27 of ore occur along narrow limonite veins, remnants of primary sulfide veins which have been enriched by the descending cold solutions

Topics: Butte Montana Tech, Boulder Batholith, Continental fault, Deposits, Copper, Oxide Ore Body, Bullwhacker Mine, Physiography, Geological Engineering, Geology
Publisher: Digital Commons @ Montana Tech
Year: 1955
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