Mining in Chile

disposal from the copper smelter of Caletones next to El Teniente, an underground copper mine in the Andes of Central Chile (2005) Chile is the world's largest producer of copper Mining of copper in Chile is done chiefly on giant low-grade porphyry copper deposits. As of 2023 the most productive copper mine is Escondida owned by BHP, Rio Tinto and two other private companies and located in inland Antofagasta Region. Part of the state's income from copper mining goes to the Economic and Social Stabilization Fund which is since 207 the successor to the Copper Stabilization Fund established in 1987. This fund allows for more precise annual government budget planning given that copper prices can exhibit strong fluctuations. ==Lithium==

Northern Chile forms part of the Lithium Triangle with substantial reserves in the form of brine. The explosive growth in electric vehicles since 2015 has triggered increased demand. Chile is the main producer of lithium from brine. Until 2017, when it was surpassed by Australia, Chile was the over-all main producer of lithium. Estimates show that Chile is expected to be surpassed also by Argentina and China in lithium production by 2030. Chile has the world's cheapest production costs for lithium and this could be an advantage for mining in Chile once recycled lithium enters the market competing with costly mining operations in the future. Most of Chile's lithium reserves are in Salar de Atacama and Salar de Maricunga, The only two lithium-extracting companies currently operating in Chile, SQM and Albemarle, have licences to extract lithium until 2030 and 2043 respectively. In April 2023 Chilean government announced plans for nationalizing its lithium industry. The state-owned copper company Codelco was commissioned by the government to negotiate nationalization with SQM. ==Gold==

. The amount of gold mined in Chile has fluctuated in the 2010–2023 period from a high of 50.852 kg in 2013 to a low of 30,907 kg in 2022. Also in the same period 36% to 72% of the gold produced annually in Chile was a by-product of copper mining. Most of these deposits formed in the last 66 millions years (Cenozoic) in connection to magmatic activity in the Andes. The placer deposits of some areas of difficult access in Patagonia are subject to sporadic small-scale illegal gold mining. A 2019 study found that seven of Chile's ten best placer gold prospects lie around Cordillera de Nahuelbuta. ==Iron==

. Since at least 2010 Chile's has each year produced 0.6% to 0.7% of all iron mined in the world. Is through its parent company Compañía de Acero del Pacífico (CAP) a member of Consejo Minero, a guild of large mining companies in the country. Compañia Minera del Pacífico has three main mines each with its own port for export. Near Copiapó the company owns Cerro Negro Norte mine which uses the port of Punta Totoralillo, further south the company is in ownership of Los Colorados mine which uses the port of Guacolda II, and near the city of La Serena El Romeral mine is operated using the port of Guayacán in Coquimbo. This project has proved controversial for political and environmental reasons. ==Iodine and nitrate==

In the Atacama Desert in northern Chile there are vast superficial deposits of caliche, a mixture of gypsum, sodium chloride and other salts, and sand. It is associated to the mineral nitratine also known as "Chile saltpeter" (Spanish: salitre). The deposits contain an average of 7.5% sodium nitrate, as well as sodium sulfate (18.87%), sodium chloride (4.8%), and smaller amounts of potassium, calcium, magnesium, borate, iodine, and perchlorate. About two-thirds of the deposits are insoluble gangue minerals. The caliche beds are from 2 cm to several meters thick in alluvial deposits, where the soluble minerals form a cement in unconsolidated regolith. Nitrate-bearing caliche is also found permeating bedrock to form bedrock deposits. Mining nitrate in the Far North of Chile was arguably the main economic activity of the country from 1880 to 1930. Caliche is the main iodine ore in Chile and the country is the world's prime producer of this element in addition to hosting over half of the worlds reserves of iodine. SQM and Cosayach are Chile's first and second largest iodine producers. Iodine at SQM is extracted from caliche ore and requires also the consumables sulphur, ammonium nitrate, sulfuric acid, kerosene, water, electricity and fossil fuel, mainly diesel. ==Other minerals==

Since the late 1970s, the production of gold and silver has increased greatly. The lead, iron and petroleum industries have shrunk since the mid-1970s, the result of both adverse international market conditions and declines in the availability of some of these resources. With a combined total value of about US$4 billion, two of the largest investments planned in Chile in the early 1990s were designated for an aluminium smelters projects in the Puerto Aisén and Strait of Magellan areas. In the 2005–2024 period more than half of the silver produced annually in Chile was a by-product of copper mining. with a brief revival in Invierno mine from 2013 to 2020. Cobalt There is no primary mining of cobalt in Chile with the last activity ending in 1944. Cobalt resources are known from the Chilean Iron Belt near the coast of Coquimbo and Atacama regions and in the site of El Volcán in Cajón del Maipo in the Andes near Santiago. Cobalt is a potential by-product of iron and copper mining along the iron belt. It is known to be found in considerable concentrations among discarded material –mainly tailings– of copper, iron and gold mining in Chile. Capstone Copper's mines of Mantoverde and Santo Domingo are thought to be able to produce battery-grade cobalt. Manganese There is no manganese mining in Chile since 2009 when Empresa Manganeso Atacama ceased operations. Until then about half of the Chilean manganese had been exported to Argentina, and mining was mainly done in underground mines. Historically Corral Quemado and other areas of Coquimbo Region have produced most manganese in Chile. Manganese mining in Chile and Corral Quemado had a strong peak in 1943 when it came to produce more of what was being purchased leading to large stockpiles accumulating in ports and railway stations and ultimately to a halt in mining and thus mass unemployment. In Arqueros Formation it occurs in some locations together with stratabound copper. for rare-earth metal Chile's main resources have been identified as of 2026 to lie in the commune of Penco near the coast in central Chile and in the Norte Chico between Coquimbo and Copiapó. Since at least 2016 the company Aclara Resources has been developing plans to commercially exploit rare-earth metals in Penco. As of March 2026 its environmental impact assessment was under evaluation by the Environmental Assessment Service. North of Penco NeoRe and Chilean Cobalt Corp have together explored for REE in the coastal communes of Chanco, Cobquecura and Pelluhue. Old tailings from the mining of other resources have also been identified as potential sources of rare-earth metals in Chile. ==Medium-scale mining==

Most medium-scale mining is concentrated near roads or other pre-existing infrastructure, and lie thus away from the high Andes where nearly all mines belong to the large-scale mining category. The mining districts of Chañaral, Copiapó, Huasco and Andacollo have most of their mining done by medium-scale mining companies. The state-owned enterprise ENAMI has among its goals supporting medium-scale mining. Medium-scale mining has a larger share of mining properties in the country as whole, and in Atacama Region in particular, relative to large-scale mining that is dominant in the regions of Tarapacá and Antofagasta. Medium-scale mining in Chile tends to focus on copper and produced about 4.5% of the copper mined in the country from 2017 to 2021. In that period the copper extracted by medium-scale mining increased each year starting from 256 kt in 2017 ato 313 kt in 2021. Besides copper other medium-scale mining activity in Chile involve gold, iron, zinc and lead. Most mineral exploration efforts by medium-scale mining are done near established mines (brownfield exploration), and as of 2023 about three quartes of these exploration projects are for copper and the remaining for gold. Some medium-scale mining companies in Chile are Grupo Minero Las Cenizas (copper), Sierra Atacama (copper), Haldeman Mining (copper and gold), Cosayach (iodine) and Santa Fe Mining (iron). ==Small-scale mining==

As with medium-scale mining, small scale mining concentrates in lowlands and the lower elevations of the Andes, usually near roads or other relevant infrastructure. The number of artisan miners in Chile, often known as pirquineros, has varied widely over the years. Since 2000 in some years with high metal prices have had up to c. 14,000 small-scale miners active. On average 95% of small-scale miners work in copper mining. The levels of illegal mining in Chile are low relative to neighbouring countries. ==Water use==

The Chilean Copper Commission projects that by 2033 the water supply to mining in Chile industry will consist of 71% of sea water and 29% from continental waters. ==Tailings==

Chile hosts as of 2025 836 tailings deposits of which 627 are inactive and 53 are abandoned. The remaining is ctailings, 129 are actively used by mines. From 1978 to 2010 Planta de Pellets in Huasco disposed its tailings legally in the sea, being the only marine disposal of tailings in Chile. ==History==

The history of mining in Chile spans more than thousand years, with early copper mining in Chiquicamata dating to the 6th century and cultures and groups such as the El Molle, Diaguita and Mapuche mining or using gold adornments well before the Inca invasion in the 15th century. Gold, silver and copper mining had a resurgence in the late colonial period (18th century). Exports of silver and copper were instrumental to finance the Chilean War of Independence (1810–1826) and then to prevent Chile defaulting in its independence debt the 1830s and 1840s. In the 19th century Chile was a major producer of silver (1830s to 1850s) and copper (1850s to 1870s), but towards the end of the century mining of gold, silver and copper were in decline. An exception to this was the Tierra del Fuego gold rush (1883–1906) in southernmost Chile. Coal and iron mining in Chile took off in the mid-19th century and early 20th century respectively. From 1870 to the 1930 nitrate mining in the far north was an immerse source of wealth and employment in Chile. Modern copper mining in Chile begun in the 1900s and 1910s with the arrival of companies from the United States which were fully nationalized by 1971 under the state-owned copper company Codelco. A new wave of foreign investment of mining begun following the Decreto Ley 600 law of 1974 and by the 1990s the country was experiencing a new mining boom. ==See also==