Morenci Mine

The Morenci Mine, located in Arizona, is the highest production copper mine in the United States and ranks third worldwide. This active open-pit mining complex primarily extracts copper and molybdenum, featuring extensive infrastructure including two concentrators, a leaching system, and multiple processing plants.

As a significant porphyry copper deposit, Morenci is characterized by complex mineralization including oxide, secondary sulfide, and primary sulfide types. The mineral deposits, spanning approximately five miles north-south and four miles east-west, are associated with intricate geological formations resulting from a series of Tertiary igneous intrusions.

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