Chuquicamata


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Chuquicamata

(cho͞o'kēkämä`tä), former town, Antofagasta region, N Chile, on the western slopes of the Andes. At an elevation of 10,435 ft (3,181 m), the location is the site of the world's largest copper mines. The extensive open-pit mining of the region dates to 1915. Smelting and flotation plants began operations in 1951; an expansion of refining plants in 1970 substantially increased copper output. In 2003, due to the expansion of the mine and environmental problems, the town was evacuated and its buildings removed; many residents moved to nearby Calama.

Chuquicamata

 

a city in northern Chile, in Antofagasta Province. Population, 28,800 (1966). Chuquicamata is situated at an elevation of approximately 3,000 m. It has a railroad station. Copper ores are mined and dressed and copper is smelted in the city.


Chuquicamata

 

the world’s largest copper deposit, located in northern Chile, in the Central Andes at an elevation of 2,840 m, 240 km northeast of the city of Antofagasta. The total geological reserves of commercial ores are estimated at about 900 million tons, with an average copper content of 0.99 percent (1978). Chuquicamata, a hydrothermal deposit of porphyry copper, is confined to a large meridional intrusion (20 km long and 3 to 4 km wide) of porphyritic monzonite. The commercial ores connected with the thick (more than 300 m) zone of oxidation form a steep stockwork that is 0.8 km wide and about 3 km long.

Three submeridional zones are distinguished in the Chuquicamata deposit: the western, the central, and the eastern zones. The western zone, which consists of copper-molybdenum ores, is 100 to 200 m wide and is the most intensively mineralized. It is composed of quartz-sericite rocks and quartzites; metalliferous minerals are represented (in addition to oxidized minerals) by pyrite, chalcocite, enargite, molybdenum, and chalcopyrite. The central zone, which consists of copper ores, is characterized by intensive kaolinization of porphyries and the development of chalcopyrite-chalcocite ores. The eastern zone consists of complex ores. The rocks are chloritized, and chalcopyrite is developed. Bornite, sphalerite, and galena are found less often.

The Chuquicamata deposit has been worked since 1915. By 1952, 4.6 million tons of copper had been extracted; 420,000 tons were mined in 1974.

V. I. STAROSTIN

References in periodicals archive ?
The company's largest development project is at the Chuquicamata mine, where it is developing an underground mine that is projected to add 40 years to Chuquicamata's current mine life.
The first major investment project to come online will be the landmark conversion of the century-old Chuquicamata open pit mine into an underground operation slated for 2019.
El primer proyecto importante que se pondra en marcha es la conversion de la centenaria mina a cielo abierto de Chuquicamata en una operacion subterranea para 2019.
Jacobs Engineering Group has received a contract from Codelco to offer engineering, procurement and field support services for the renovation of acid plants at the Chuquicamata Mine in northern Chile.
It is located along the main porphyry copper belt in northern Chile, commonly known as the Domeyko Cordillera, directly along the main West Fissure Fault System that controls several world-class copper deposits in the area, midway between the giant Chuquicamata (Codelco) and Centinela (Antofagasta Minerals) copper mining districts.
SANTIAGO, Chile, Dhu-AlQa'dah 25, 1436, Sep 9, 2015, SPA -- The world's top copper producing company says it has been forced to temporarily stop the concentrator at its Chuquicamata mine in Chile due to a protest by contract workers, according to AP.
The environmental rules of economic development: Governing air pollution from smelters in Chuquicamata and La Oroya
La extraccion de agua para las ciudades de Antofagasta, Calama y Chuquicamata repercutio fuertemente en el volumen de masa ganadera que era posible alimentar y es senalado como una de las causas mas importantes del exodo de poblacion hacia centros minero-urbanos del desierto de Atacama.
Equally disturbing is the open-pit Chuquicamata Mine in Chile, one of the largest copper mines in the world, which from this perspective looks like a serious burn; the damage is spread over a wide area because of the toxic dust particles released by the constant to-ing and fro-ing of trucks.
Nacio el 13 de mayo de 1942 en Chuquicamata, hijo de Francisco Poblete Borquez y Julia Fernandez Maldonado.
SeeNews) - Nov 13, 2012 - Chile's state-run copper miner Codelco confirmed yesterday that its Chuquicamata deposit will fall short of the initially planned output of 390,000 tonnes in 2012, as reported earlier in the day by local daily La Tercera.
Por otro lado, habria que destacar las causas locales que hicieron de Potrerillos, El Salvador y Chanaral un caso extremo, sobre todo teniendo en cuenta que ya hacia mediados de los sesenta se habia comenzado a construir tanques de tratamiento de relaves en El Teniente y Chuquicamata.