Valle de Allende

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Valle de Allende is the municipal seat and largest city of the municipality of Allende in the Mexican state of Chihuahua. Originally named Valle de San Bartolomé, it was founded in 1569 by Franciscan monks. The city is one of the oldest in Chihuahua.

Municipalities are the second-level administrative divisions of Mexico, where the first-level administrative division is the state. As of the establishment of two new municipalities in Chiapas in September 2017, there are 2,448 municipalities in Mexico, not including the 16 delegaciones of Mexico City. The internal political organization and their responsibilities are outlined in the 115th article of the 1917 Constitution and detailed in the constitutions of the states to which they belong.

Chihuahua (state) State of Mexico

Chihuahua, officially the Free and Sovereign State of Chihuahua, is one of the 31 states of Mexico. It is located in Northwestern Mexico and is bordered by the states of Sonora to the west, Sinaloa to the southwest, Durango to the south, and Coahuila to the east. To the north and northeast, it has a long border with the U.S. adjacent to the U.S. states of New Mexico and Texas. Its capital city is Chihuahua City.

The city received its current name in 1825 in honor of Ignacio Allende, a military leader during the Mexican War of Independence.

Ignacio Allende Mexican general

Ignacio José de Allende y Unzaga, born Ignacio Allende y Unzaga, was a captain of the Spanish Army in Mexico who came to sympathize with the Mexican independence movement. He attended the secret meetings organized by Josefa Ortiz de Domínguez, where the possibility of an independent New Spain was discussed. He fought along with Miguel Hidalgo y Costilla in the first stage of the struggle, eventually succeeding him in leadership of the rebellion. Allende was captured by Spanish colonial authorities while he was in Coahuila and executed for treason in Chihuahua.

Mexican War of Independence armed conflict which ended the rule of Spain in the territory of New Spain

The Mexican War of Independence was an armed conflict, and the culmination of a political and social process which ended the rule of Spain in 1821 in the territory of New Spain. The war had its antecedent in Napoleon's French invasion of Spain in 1808; it extended from the Cry of Dolores by Father Miguel Hidalgo y Costilla on September 16, 1810, to the entrance of the Army of the Three Guarantees led by Agustín de Iturbide to Mexico City on September 27, 1821. September 16 is celebrated as Mexican Independence Day.

As of 2010, Valle de Allende had a population of 4,185. [1]

Valle de Allende was the location of the fall, in 1969, of a scientifically important meteorite (known as Allende) that has become the most studied meteorite.

Allende meteorite CV3 carbonaceous chondrite meteorite

The Allende meteorite is the largest carbonaceous chondrite ever found on Earth. The fireball was witnessed at 01:05 on February 8, 1969, falling over the Mexican state of Chihuahua. After breaking up in the atmosphere, an extensive search for pieces was conducted and over 2 tonnes (tons) of meteorite were recovered. The availability of large quantities of samples of the scientifically-important chondrite class has enabled numerous investigations by a large number of scientists; it is often described as "the best-studied meteorite in history." The Allende meteorite has abundant, large calcium-aluminium-rich inclusions, which are among the oldest objects formed in the Solar System.

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Allendeite, Sc4Zr3O12, is an oxide mineral. Allendeite was discovered in a small ultrarefractory inclusion within the Allende meteorite. This inclusion has been named ACM-1. It is one of several scandium rich minerals that have been found in meteorites. Allendeite is trigonal, with a calculated density of 4.84 g/cm3. The new mineral was found along with hexamolybdenum. These minerals, are believed to demonstrate conditions during the early stages of the Solar System, as is the case with many CV3 carbonaceous chondrites such as the Allende meteorite. It is named after the Allende meteorite that fell in 1969 near Pueblito de Allende, Chihuahua, Mexico.

Hexamolybdenum, is a molybdenum dominant alloy discovered during a nanomineralogy investigation of the Allende meteorite. Hexamolybdenum was discovered in a small ultrarefractory inclusion within the Allende meteorite. This inclusion has been named ACM-1. Hexamolybdenum is hexagonal, with a calculated density of 11.90 g/cm3. The new mineral was found along with allendeite. These minerals, are believed to demonstrate conditions during the early stages of the Solar System, as is the case with many CV3 carbonaceous chondrites such as the Allende meteorite. Hexamolybdenum lies on a continuum of high-temperature alloys that are found in meteorites and allows a link between osmium, ruthenium, and iron rich meteoritic alloys. The name hexamolybdenum refers to the crystal symmetry and the molybdenum rich composition. The Allende meteorite fell in 1969 near Pueblito de Allende, Chihuahua, Mexico.

References

  1. "Allende". Catálogo de Localidades. Secretaría de Desarrollo Social (SEDESOL). Retrieved 23 April 2014.

Coordinates: 26°56′N105°24′W / 26.933°N 105.400°W / 26.933; -105.400

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.