Ralph Stegen

last updated 4/20/2018

Ralph J. Stegen

Vice President Mine Site Exploration at Freeport-McMoRan Inc

333 N Central Ave, Phoenix, Arizona, United States
HQ Phone:
(602) 366-8100

General Information


President - Arizona Geological Society Inc

Vice President, Mine Site Exploration - Phelps Dodge Corp.

Chief Geologist - Morenci and Tyrone

Recent News  

Officers and Councilors

President: Ralph J. Stegen
Past President: Ralph J. Stegen V P Field Trips: Ralph J. Stegen VP Field Trips: Ralph J. Stegen* Note: Stegen resigned in January, Cole resigned in April,

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AGS - 2014 Newsletters

February 2014 - Ralph Stegen, Vice President, Mine Site Exploration, Freeport McMoRan Copper & Gold, The Morenci Porphyry Cu-Mo Deposit, Greenlee County, Arizona: A Geologic Summary with Emphasis on Hypogene and Supergene Mineralization

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AGS - 2007 Newsletters

November 2007 - Ralph Stegen, Vice President, Exploration, Freeport-McMoRan Copper and Gold, Inc., The Climax porphyry molybdenum deposit, Colorado: An update of the geology and mineralization since the Wallace era
October 2007 - October Dinner Meeting is Cancelled

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