Suchergebnisse

International audience ; 17 Salars of the Andean Plateau in the Central Andes are the largest lithium deposits on Earth. The most 18 notorious are the Chilean Salar de Atacama, and Uyuni in the Bolivian Altiplano. Despite the relevance of the 19 region concerning the lithium resources, there is still scarce scientific literature on the hydrochemistry of lithium 20 deposits in the Argentine portion of the Andean Plateau. In this article we present new hydrochemical data from 21 the first regional-scale reconnaissance exploration of the four major salars in the northernmost Argentine Andes. 22 Data revealed that brines in the studied salars are characterized by mean Li + concentrations ranging between 82 23 and 1,014 mg L-1 , and mean Li:Mg ratios from 0.92 to 0.54. The size of the study salars becomes a potential 24 limitation for the whole Li resources in comparison with the giant Atacama and Uyuni. Nonetheless, when 25 considering the Li grade and the Li:Mg ratio of brines, the Northern Puna salars turn out to be very remarkable 26 lithium prospects. Data emerged from this survey represent a valuable tool for: 1) private investment projects by 27 defining Li mining targets, 2) for the administration of natural resources and the definition of the State's politics, 28 and 3) for scientific purposes, especially in investigations meant to better understand the processes involved in 29 the formation of Li brine deposits, salars, and endorheic basins. 30 31

International audience ; 17 Salars of the Andean Plateau in the Central Andes are the largest lithium deposits on Earth. The most 18 notorious are the Chilean Salar de Atacama, and Uyuni in the Bolivian Altiplano. Despite the relevance of the 19 region concerning the lithium resources, there is still scarce scientific literature on the hydrochemistry of lithium 20 deposits in the Argentine portion of the Andean Plateau. In this article we present new hydrochemical data from 21 the first regional-scale reconnaissance exploration of the four major salars in the northernmost Argentine Andes. 22 Data revealed that brines in the studied salars are characterized by mean Li + concentrations ranging between 82 23 and 1,014 mg L-1 , and mean Li:Mg ratios from 0.92 to 0.54. The size of the study salars becomes a potential 24 limitation for the whole Li resources in comparison with the giant Atacama and Uyuni. Nonetheless, when 25 considering the Li grade and the Li:Mg ratio of brines, the Northern Puna salars turn out to be very remarkable 26 lithium prospects. Data emerged from this survey represent a valuable tool for: 1) private investment projects by 27 defining Li mining targets, 2) for the administration of natural resources and the definition of the State's politics, 28 and 3) for scientific purposes, especially in investigations meant to better understand the processes involved in 29 the formation of Li brine deposits, salars, and endorheic basins. 30 31

International audience ; 17 Salars of the Andean Plateau in the Central Andes are the largest lithium deposits on Earth. The most 18 notorious are the Chilean Salar de Atacama, and Uyuni in the Bolivian Altiplano. Despite the relevance of the 19 region concerning the lithium resources, there is still scarce scientific literature on the hydrochemistry of lithium 20 deposits in the Argentine portion of the Andean Plateau. In this article we present new hydrochemical data from 21 the first regional-scale reconnaissance exploration of the four major salars in the northernmost Argentine Andes. 22 Data revealed that brines in the studied salars are characterized by mean Li + concentrations ranging between 82 23 and 1,014 mg L-1 , and mean Li:Mg ratios from 0.92 to 0.54. The size of the study salars becomes a potential 24 limitation for the whole Li resources in comparison with the giant Atacama and Uyuni. Nonetheless, when 25 considering the Li grade and the Li:Mg ratio of brines, the Northern Puna salars turn out to be very remarkable 26 lithium prospects. Data emerged from this survey represent a valuable tool for: 1) private investment projects by 27 defining Li mining targets, 2) for the administration of natural resources and the definition of the State's politics, 28 and 3) for scientific purposes, especially in investigations meant to better understand the processes involved in 29 the formation of Li brine deposits, salars, and endorheic basins. 30 31

The Salars of Xunhua County in the Qinghai Province of the PRC, a Turkic and Islamic people exiled from the Samarkand area in today's Uzbekistan, don't see themselves as victims. The Salars have been very quick to adapt to the social and economic opportunies since the 1980s and must be considered being at the forefront of change in the province of Qinghai.(DÜI-NIAS-Han)

Lithium has become a key element of technologies in the second decade of the 21st century. Its applications and use have grown exponentially. Similarly, research related to the element in both geological, metallogenic, chemical and industrial aspects. Globally, lithium was first identified in Sweden in 1817 by Johan August Arfvedson. Argentine chemist and geologist Luciano R. Catalano drew attention to its presence in the Puna salars in the 1920s. Intensive studies begin in the decade of 1970 and 1980 where they participate the National University of Salta (UNSa), the National Commission of Space Investigations (CNIE) and the General Direction of Military Fabrications (DGFM). After an unsuccessful attempt at exploitation in the salar del Rincón, they bear fruit with the first project underway at the salar del Hombre Muerto (Fénix Project, FMC) in the early 1990s. In this work a brief synthesis of the history of the geological and chemical investigations around lithium and the men who carried it out is made. ; El litio se ha convertido en un elemento clave de las tecnologías en la segunda década del siglo XXI. Sus aplicaciones y su uso han crecido exponencialmente. En igual sentido las investigaciones relacionadas con el elemento tanto en los aspectos geológicos, metalogénicos, químicos e industriales. En el ámbito mundial el litio fue identificado por primera vez en Suecia por Johan August Arfvedson en 1817. El químico y geólogo argentino Luciano R. Catalano llamó la atención sobre su presencia en los salares puneños en la década de 1920. Los estudios intensivos comienzan en la década de 1970 y 1980 donde participan la Universidad Nacional de Salta, la Comisión Nacional de Investigaciones Espaciales y la Dirección General de Fabricaciones Militares. Luego de un intento fallido de explotación en el salar del Rincón, dan su fruto con el primer proyecto en marcha en el salar del Hombre Muerto a comienzo de los noventa. En este trabajo se realiza una breve síntesis de la historia de las investigaciones geológicas y químicas en torno al litio y de los hombres que la llevaron a cabo.

The International Year of Quinoa (IYQ) in 2013 celebrates this Andean plant for its potential contribution to the fight against hunger and poverty. The development of this sector can also have a territorial impact, depending on the context and on the accompanying process, as shown by the comparison between the Salars region in the south of the Bolivian Altiplano, the Central Chile region and the Mapuche region in southern Chile.

L'Année internationale du quinoa en 2013 met en lumière cette plante d'origine andine pour son potentiel de lutte contre la faim et la pauvreté. Le développement de la filière peut aussi avoir un impact sur le territoire, selon le contexte et l'accompagnement, comme le montre la comparaison de la zone des Salars, au sud de l'altiplano bolivien, de la région Centre du Chili et de la zone mapuche au sud du Chili.

International audience ; The International Year of Quinoa (IYQ) in 2013 celebrates this Andean plant for its potential contribution to the fight against hunger and poverty. The development of this sector can also have a territorial impact, depending on the context and on the accompanying process, as shown by the comparison between the Salars region in the south of the Bolivian Altiplano, the Central Chile region and the Mapuche region in southern Chile. ; El año internacional de la quinua en 2013 resalta el potencial de esta planta de origen andino para luchar contra el hambre y erradicar la pobreza. El desarrollo de la cadena productiva también puede tener un impacto sobre el territorio, según el contexto y el acompañamiento, tal y como queda reflejado en la comparación entre la zona de los salares, en el sur del altiplano boliviano, la región central de Chile y la zona mapuche en el sur de Chile. ; L'Année internationale du quinoa en 2013 met en lumière cette plante d'origine andine pour son potentiel de lutte contre la faim et la pauvreté. Le développement de la filière peut aussi avoir un impact sur le territoire, selon le contexte et l'accompagnement, comme le montre la comparaison de la zone des Salars, au sud de l'altiplano bolivien, de la région Centre du Chili et de la zone mapuche au sud du Chili.

International audience ; The International Year of Quinoa (IYQ) in 2013 celebrates this Andean plant for its potential contribution to the fight against hunger and poverty. The development of this sector can also have a territorial impact, depending on the context and on the accompanying process, as shown by the comparison between the Salars region in the south of the Bolivian Altiplano, the Central Chile region and the Mapuche region in southern Chile. ; El año internacional de la quinua en 2013 resalta el potencial de esta planta de origen andino para luchar contra el hambre y erradicar la pobreza. El desarrollo de la cadena productiva también puede tener un impacto sobre el territorio, según el contexto y el acompañamiento, tal y como queda reflejado en la comparación entre la zona de los salares, en el sur del altiplano boliviano, la región central de Chile y la zona mapuche en el sur de Chile. ; L'Année internationale du quinoa en 2013 met en lumière cette plante d'origine andine pour son potentiel de lutte contre la faim et la pauvreté. Le développement de la filière peut aussi avoir un impact sur le territoire, selon le contexte et l'accompagnement, comme le montre la comparaison de la zone des Salars, au sud de l'altiplano bolivien, de la région Centre du Chili et de la zone mapuche au sud du Chili.