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La Colosa Mine
La Colosa is a porphyry Gold mining, gold mine in Colombia. The mine is located in Cajamarca, Tolima, Cajamarca, Tolima Department, Tolima on the eastern flanks of the Cordillera Central (Colombia), Central Ranges of the Colombian Andes. La Colosa has estimated inferred resources of of gold, grading at of Au. In 2015, the mine produced of gold.Gold - UPME In 2016, 88.4% of the mining value in Colombia came from coal and gold combined, with nickel following at 9.3%. Description La Colosa, covering an area of , is the second major greenfield discovery in Colombia, after Gramalote mine, Gramalote and believed to have a potential of producing between of gold per year for 20 years. La Colosa gold project, started in 2006, is based on low- ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cajamarca, Tolima
Cajamarca is a town and municipality in the Tolima Department of Colombia. The population of the municipality was 17,309 as of the 2018 census. The municipality has two populated centres, the town centre of Cajamarca and the locality of Anaime. It is located along the Pan-American Highway. In 1886, colonisers from Antioquia colonised the area currently known as Anaime, and started to develop the land for agriculture. In 1913, the Bishop of Ibagué Ismael Perdomo bought the land of the municipality and officially founded the municipality of Cajamarca, which stands for 'cold land' in Quechua. The main economic activity is agriculture, and the town is also known as the 'agricultural larder' of Colombia.El Tiempo. 1997. "Cajamarca despensa agrícola del Tolima." ''El Tiempo'', 21 May. https://www.eltiempo.com/archivo/documento/MAM-600830 Internationally, the town is best known as the location of the La Colosa gold mining project of AngloGold Ashanti AngloGold Ashanti Lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicate
In chemistry, a silicate is any member of a family of polyatomic anions consisting of silicon and oxygen, usually with the general formula , where . The family includes orthosilicate (), metasilicate (), and pyrosilicate (, ). The name is also used for any salt of such anions, such as sodium metasilicate; or any ester containing the corresponding chemical group, such as tetramethyl orthosilicate. The name "silicate" is sometimes extended to any anions containing silicon, even if they do not fit the general formula or contain other atoms besides oxygen; such as hexafluorosilicate .Most commonly, silicates are encountered as silicate minerals. For diverse manufacturing, technological, and artistic needs, silicates are versatile materials, both natural (such as granite, gravel, and garnet) and artificial (such as Portland cement, ceramics, glass, and waterglass). Structural principles In all silicates, silicon atom occupies the center of an idealized tetrahedro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Mines In Colombia
A surface, as the term is most generally used, is the outermost or uppermost layer of a physical object or space. It is the portion or region of the object that can first be perceived by an observer using the senses of sight and touch, and is the portion with which other materials first interact. The surface of an object is more than "a mere geometric solid", but is "filled with, spread over by, or suffused with perceivable qualities such as color and warmth". The concept of surface has been abstracted and formalized in mathematics, specifically in geometry. Depending on the properties on which the emphasis is given, there are several non equivalent such formalizations, that are all called ''surface'', sometimes with some qualifier, such as algebraic surface, smooth surface or fractal surface. The concept of surface and its mathematical abstraction are both widely used in physics, engineering, computer graphics, and many other disciplines, primarily in representing the surfac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Mines In Colombia
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gold is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
INGEOMINAS
The Colombian Geological Survey (CGS) ( es, Servicio Geológico Colombiano; formerly known as INGEOMINAS) is a scientific agency of the Colombian government in charge of contributing to the socioeconomic development of the nation through research in basic and applied geosciences of the subsoil, the potential of its resources, evaluating and monitoring threats of geological origin, managing the geoscientific knowledge of the nation, and studying the nuclear and radioactive elements in Colombia. History The CGS was initially created as the ''National Scientific Commission'' ( es, Comisión Científica Nacional) by the Congress of Colombia on December 22, in 1916, with the mission of mapping the geological resources of the nation and exploring the national territory in search of mineral deposits. Following a series of earthquakes throughout the nation in the early 1920s, the eruption of the Galeras volcano in 1925, and the growing mining and petroleum industry, the Colombian gove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontifical Xavierian University
The Pontifical Xavierian University (in Spanish Pontificia Universidad Javeriana) is a private higher education institution founded in 1623. It is one of the oldest, most traditional, and prestigious Colombian universities, directed by the Society of Jesus, with its main facilities in Bogotá and a second campus in Cali. "La Javeriana", as it is known by its students, has traditionally educated the Colombian elite. It is one of the 33 universities entrusted to the Society of Jesus in Latin America and one of 167 around the world. The Javeriana University in Bogotá has 18 schools comprising 61 departments and 242 academic programs catering to areas of knowledge, giving the university its multidisciplinary nature. It has 45 buildings in . The Javeriana University in Cali offers 18 schools in four faculties. It is located in . Its Law School recently received a high-quality accreditation by Resolution 6808 6 August 2010, of the Ministry of National Education. The campus in Cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerro Matoso Mine
The Cerro Matoso mine in northwest of Colombia is one of the largest open-pit ferronickel mines in the world. and the largest mine of South America,Óscar Guesguán SerpEl dictamen de Medicina Legal en el caso Cerro Matoso.El Espectador (Bogotá). March 11, 2017; accessed 8 June 2018 containing the largest nickel reserve in Colombia. It is operated by Cerro Matoso S.A., a company that was owned by Anglo-Australian multinational BHP between 1980 and 2015, and since then is owned by South32. There have been allegations that the mine's operations have caused heavy metal pollution affecting especially local indigenous Zenu and Afro-Descendant residents. These allegations have been rejected by Cerro Matoso on the basis of the available scientific and medical evidence. In March 2018 a Review Chamber of the Constitutional Court of Colombia ordered Cerro Matoso to pay damages to local communities. This decision was reversed partially in September 2018 by the Plenary Chamber of the Const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quinchía Mine
The Quinchía mine is a gold mine in Colombia. The mine is located in Quinchía, Risaralda. The mine has estimated reserves of of gold and of silver. In 2016, Quinchía produced of gold,Gold - UPME and of silver.Silver - UPME Description The Quinchía Project, covering an area of , encompasses multiple porphyry gold target centers that have been early stage drill tested in 2006. Three historic[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mining Areas In Colombia
This is a list of mining areas in Colombia.List of mining areas, Colombia at .org The mineral industry of Colombia is large and diverse; the country occupies the first place in mining areas per surface area in the world. In pre-Columbian times, mining of gold, silver, copper, emeralds, salt, coal and other minerals was already widespread. Precious metals as gold, and silver, platinum, nickel and coltan are located in different areas throughout the country. Colombia is the first producer of [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dacite
Dacite () is a volcanic rock formed by rapid solidification of lava that is high in silica and low in alkali metal oxides. It has a fine-grained ( aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyolite. It is composed predominantly of plagioclase feldspar and quartz. Dacite is relatively common, occurring in many tectonic settings. It is associated with andesite and rhyolite as part of the subalkaline tholeiitic and calc-alkaline magma series. Composition Dacite consists mostly of plagioclase feldspar and quartz with biotite, hornblende, and pyroxene ( augite or enstatite). The quartz appears as rounded, corroded phenocrysts, or as an element of the ground-mass. The plagioclase in dacite ranges from oligoclase to andesine and labradorite. Sanidine occurs, although in small proportions, in some dacites, and when abundant gives rise to rocks that form transitions to the rhyolites. The relative proportions of feldspars a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cajamarca Complex
Cajamarca (), also known by the Quechua name, ''Kashamarka'', is the capital and largest city of the Cajamarca Region as well as an important cultural and commercial center in the northern Andes. It is located in the northern highlands of Peru at approximately 2,750 m (8,900 ft) above sea level in the valley of the Mashcon river. Cajamarca had an estimated population of about 226,031 inhabitants in 2015, making it the 13th largest city in Peru. Cajamarca has a mild highland climate, and the area has a very fertile soil. The city is well known for its dairy products and mining activity in the surroundings. Among its tourist attractions, Cajamarca has numerous examples of Spanish colonial religious architecture, beautiful landscapes, pre-Hispanic archeological sites and hot springs at the nearby town of Baños del Inca (Baths of the Inca). The history of the city is highlighted by the Battle of Cajamarca, which marked the defeat of the Inca Empire by Spanish invad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schist
Schist ( ) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily seen with a low-power hand lens, oriented in such a way that the rock is easily split into thin flakes or plates. This texture reflects a high content of platy minerals, such as micas, talc, chlorite, or graphite. These are often interleaved with more granular minerals, such as feldspar or quartz. Schist typically forms during regional metamorphism accompanying the process of mountain building (orogeny) and usually reflects a medium grade of metamorphism. Schist can form from many different kinds of rocks, including sedimentary rocks such as mudstones and igneous rocks such as tuffs. Schist metamorphosed from mudstone is particularly common and is often very rich in mica (a ''mica schist''). Where the type of the original rock (the protolith) is discernible, the schist is usually given a name reflecting its protolith, such as ''schis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
