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Superimposed Laramide and middle Tertiary deformation in the Rosemont-Helvetia district, southeastern Arizona

James J. Hardy, Jr.
James J. Hardy, Jr.
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January 01, 1996


Copper deposits of the Rosemont-Helvetia mining district lie in the northern Santa Rita Mountains approximately 35–40 miles south-southeast of Tucson, Arizona (Fig. 1). Within the district, four separate areas of copper mineralization occur -Rosemont, Peach-Elgin, Broad Top Butte, and Copper World (Fig. 2); however, only the Rosemont and Peach-Elgin deposits have drill-defined reserves. These various mineral reserves were purchased by ASARCO, Inc. in 1988.

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Society of Economic Geologists Guidebook Series

Tertiary Extension and Mineral Deposits, Southwestern U.S.

William A. Rehrig
William A. Rehrig
I. Low-Angle Tectonic Features of the Southwestern United States and Their Influence on Mineral Resources
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James J. Hardy
James J. Hardy
II. Dismemberment of Porphyry Copper Mineralization in the Rosemont-Helvetia District, Arizona
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Society of Economic Geologists
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Publication date:
January 01, 1996




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