Planchas De Plata, Sonora

	Planchas De Plata, Sonora Planchas de Plata (Spanish for ''slabs of silver''), sometimes called Bolas de Plata (''balls of silver'') is a historic silver-mining district near Nogales, Sonora, Mexico, and a few miles south of the border with the US state of Arizona. Native silver was discovered here in 1736 by Antonio Siraumea, a Yaqui Indian, on the ''Rancho Arizona'' of Bernardo de Urrea. Historian Donald Garate believes Urrea's Arizona Ranch to be the likely source of the name of the present US state of Arizona, and he claimed the origin of the name of the ranch was the Basque phrase "aritz ona" (''good oak''). Other historians have, however, debated this. For more detail on the etymology of the name Arizona, see Arizona. Prospectors and miners rushed to the area of the great silver discovery of October, 1736. It was given the name ''San Antonio de Padua'' by ''Justicia Mayor'' Juan Bautista de Anza when he arrived on the scene in November and ordered that all the silver that had been taken from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Arizona And The West The ''Journal of the Southwest'' is a quarterly peer-reviewed academic journal published quarterly by the Southwest Center, at the University of Arizona, with a focus on the American Southwest and adjacent northwestern Mexico. The journal publishes scholarly research papers and reviews from across a range of academic fields in the humanities, including anthropology, folklore, literary studies, historiography, socio-political studies and aspects of the region's natural history. As an area studies journal, the ''Journal of the Southwest'' is intended as an interdisciplinary research resource in the study of the region's peoples and cultures. The journal was initially established in 1959 as a periodical sponsored by the University of Arizona, under the name ''Arizona and the West''. In 1987 the journal's name was changed to the current ''Journal of the Southwest'', with the volume numbering carried over under the new name and format. External links ''Journal of the Southwest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Silver Mines In Mexico Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc Refining (metallurgy), refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes bimetallism, alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Geography Of Sonora Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Federal Entities of Mexico. The state is divided into 72 municipalities; the capital (and largest) city of which being Hermosillo, located in the center of the state. Other large cities include Ciudad Obregón, Nogales (on the Mexico-United States border), San Luis Río Colorado, and Navojoa. Sonora is bordered by the states of Chihuahua to the east, Baja California to the northwest and Sinaloa to the south. To the north, it shares the U.S.–Mexico border primarily with the state of Arizona with a small length with New Mexico, and on the west has a significant share of the coastline of the Gulf of California. Sonora's natural geography is divided into three parts: the Sierra Madre Occidental in the east of the state; plains and rolling hills in the center; and the coast on the Gulf of California. It is pri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]