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The Colorado Mineral Belt (CMB) is an area of ore deposits from the La Plata Mountains in Southwestern Colorado to near the middle of the state at Boulder, Colorado, and from which over 25 million troy ounces (778 t) of gold were extracted beginning in 1858. [2]
The Cripple Creek & Victor Gold Mine, formerly and historically the Cresson Mine, is an active gold mine located near the town of Victor, in the Cripple Creek mining district in the US state of Colorado. The richest gold mine in Colorado history, [1] it is the only remaining significant producer of gold in the state, and produced 322,000 troy ...
Diamonds from a prospect in the State Line Kimberlite Field, Colorado-Wyoming. Kelsey Lake Diamond Mine is a defunct diamond mine in Colorado, USA.It is located in the State Line Kimberlite District, near the Wyoming border, and consists of nine kimberlite volcanic pipes, of which two were open pit mined.
Only one Colorado mine continues to produce gold, the Cripple Creek & Victor Gold Mine at Victor near Colorado Springs, an open-pit heap leach operation owned by Newmont Corporation, which produced 322,000 troy ounces of gold in 2019 and reported 3.45 million troy ounces of Proven and Probable Reserves as at December 31, 2019.
Granite Tectonics Of Pikes Peak Composite Batholith, Colorado Pegmatite Symposium - 1986, R.M. Hutchinson - Colorado School of Mines; Colorado Gem Trails and Mineral Guide, Richard M. Pearl, 3rd rev. ed. 1993; A Brief Summary of the Mineral Deposits of the Pikes Peak Batholith, Colorado, Rocks & Minerals, September 1, 2001
The Climax mine, located in Climax, Colorado, United States, is a major molybdenum mine in Lake and Summit counties, Colorado. Shipments from the mine began in 1915. At its highest output, the Climax mine was the largest molybdenum mine in the world, and for many years it supplied three quarters of the world's supply of molybdenum. After a long ...
The Mollie Kathleen Gold Mine is a historic vertical shaft mine near Cripple Creek, Colorado, United States. [1] The mine shaft descends 1,000 feet (300 m) into the mountain, a depth roughly equal to the height of the Empire State Building in New York City. [2] The mine currently gives tours, [3] and is visited by around 40,000 people annually. [4]
Sweet Home Mine is a mine near Alma, Colorado, United States. It was founded in 1873 as a silver mine. [ 2 ] It is best known as the source of the famous rhodochrosite crystals "Alma King", displayed at the Denver Museum of Nature and Science , and "Alma Rose", displayed at the Rice Northwest Museum of Rocks and Minerals in Oregon.