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However, the remote desert location made mining generally uneconomic without onsite treatment. The area was mostly idle until the New Cornelia mine opened in 1917 as the first large open-pit mine in Arizona. Mining continued in the district until 1983. The district produced 6.304 billion pounds of copper.
Underground mine producing nickel and copper concentrates 18 (2018) [8] 15 Phoenix Lander County, Nevada: Newmont Mining Corporation: Gold-copper ore, concentrated and leached 16 (2018) [6] 16 Lisbon Valley San Juan County, Utah: Lisbon Valley Mining Company Copper ore, open pit, heap leached 10–15 (2018) [9] 17 Miami: Gila County, Arizona ...
Mines in Arizona — historic and present day sites of mining operations in Arizona Subcategories. This category has the following 2 subcategories, out of 2 total ...
New Cornelia mine – inactive copper mine near Ajo, Arizona; Ray mine – Asarco copper mine located in Pinal county, Arizona; Red Dog mine – zinc and lead mine in Red Dog Mine, Alaska; Rio Tinto Borax Mine – California's largest open-pit mine and the largest borax mine in the world; Thompson Creek mine – molybdenum mine in Custer County ...
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The mine is located in southern Pima County, southwest of Tucson and west of Green Valley-Sahuarita. Originally developed as an underground mine in 1907, the Sierrita open pit has been in operation since 1959 and is a copper and molybdenum mining complex, operating on a porphyry copper deposit with oxide, secondary sulfide, and primary sulfide ...
Arizona breccia pipe uranium mineralization; 1983 Arizona copper mine strike; Arizona Department of Mines and Mineral Resources; Arizona Mining and Mineral Museum; Arizona State Mine Inspector; Artillery Mountains
Arizona is known as the Copper State because it produces two-thirds of US copper annually. Laramide copper porphyry deposits are common around Tucson and include the Twin Buttes, Sierrita-Esperanza, Rosemont, Silver Bell and Mission-Pima mines, as well as the historical Ajo mine to the west.