|
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 si ... [...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 The University of Arizona (Arizona, U of A, UArizona, or UA) is a public land-grant research university in Tucson, Arizona. Founded in 1885 by the 13th Arizona Territorial Legislature, it was the first university in the Arizona Terr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Mines In Mexico
Silver is a chemical element with the symbol Ag (from the Latin ', derived from the Proto-Indo-European ''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. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes 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 the seven metals of antiquity, silver has had an enduring role in most human cultures. Other than in cur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 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, Sonora, Nogales (on the Mexico–United States border, Mexico-United States border), San Luis Río Colorado, and Navojoa. Sonora is bordered by the states of Chihuahua (state), Chihuahua to the east, Baja California to the northwest and Sinaloa to the south. To the north, it shares the Mexico–United States border, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Park Service
The National Park Service (NPS) is an List of federal agencies in the United States, agency of the Federal government of the United States, United States federal government within the United States Department of the Interior, U.S. Department of the Interior that manages all List of areas in the United States National Park System, national parks, most National monument (United States), national monuments, and other natural, historical, and recreational properties with various title designations. The United States Congress, U.S. Congress created the agency on August 25, 1916, through the National Park Service Organic Act. It is headquartered in Washington, D.C., within the main headquarters of the Department of the Interior. The NPS employs approximately 20,000 people in 423 individual units covering over 85 million acres in List of states and territories of the United States, all 50 states, the Washington, D.C., District of Columbia, and Territories of the United States, US territ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Domain
The public domain (PD) consists of all the creative work to which no exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly waived, or may be inapplicable. Because those rights have expired, anyone can legally use or reference those works without permission. As examples, the works of William Shakespeare, Ludwig van Beethoven, Leonardo da Vinci and Georges Méliès are in the public domain either by virtue of their having been created before copyright existed, or by their copyright term having expired. Some works are not covered by a country's copyright laws, and are therefore in the public domain; for example, in the United States, items excluded from copyright include the formulae of Newtonian physics, cooking recipes,Copyright Protection No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pan Amalgamation
The pan amalgamation process is a method to extract silver from ore, using salt and copper(II) sulfate in addition to mercury. The process was widely used from 1609 through the 19th century; it is no longer used. The patio process had been used to extract silver from ore since its invention in 1557. One drawback of the patio process was the long treatment time, usually weeks. Alvaro Alonso Barba invented the faster ''pan'' process (in Spanish the ''cazo'' or ''fondo'' process) in 1609 in Potosí, Bolivia, in which ore was mixed with salt and mercury (and sometimes copper(II) sulfate) and heated in shallow copper vessels. The treatment time was reduced to 10 to 20 hours. Whether patio or pan amalgamation was used at a particular location often depended on climate (warmer conditions speeded the patio process) and the availability and cost of fuel to heat the pans. The amount of salt and copper(II) sulfate varied from one-quarter to ten pounds of one or the other, or both, per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stamp Mill
A stamp mill (or stamp battery or stamping mill) is a type of mill machine that crushes material by pounding rather than grinding, either for further processing or for extraction of metallic ores. Breaking material down is a type of unit operation. Description A stamp mill consists of a set of heavy steel (iron-shod wood in some cases) stamps, loosely held vertically in a frame, in which the stamps can slide up and down. They are lifted by cams on a horizontal rotating shaft. As the cam moves from under the stamp, the stamp falls onto the ore below, crushing the rock, and the lifting process is repeated at the next pass of the cam. Each one frame and stamp set is sometimes called a "battery" or, confusingly, a "stamp" and mills are sometimes categorised by how many stamps they have, i.e. a "10 stamp mill" has 10 sets. They usually are arranged linearly, but when a mill is enlarged, a new line of them may be constructed rather than extending the line. Abandoned mill sites (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lost Mines
Lost mines are a popular form of lost treasure legend. The mines involved usually contain a high-value commodity such as gold 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 ..., silver or diamonds. Often, there is a treasure map, map (sometimes called a "waybill") purportedly showing the location of the mine. Common reasons for the mines being lost include: * The mine was discovered and worked by a recluse who refuses to divulge the location, and dies without revealing the location. * The mine was worked by native peoples who refuse to divulge the location to others. * The mineral deposit was discovered in a remote location, and upon returning to the area the discoverer could not find it again. * The discoverer died of hunger, thirst, or exposure shortly after discovering the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico City
Mexico City ( es, link=no, Ciudad de México, ; abbr.: CDMX; Nahuatl: ''Altepetl Mexico'') is the capital and largest city of Mexico, and the most populous city in North America. One of the world's alpha cities, it is located in the Valley of Mexico within the high Mexican central plateau, at an altitude of . The city has 16 boroughs or ''demarcaciones territoriales'', which are in turn divided into neighborhoods or ''colonias''. The 2020 population for the city proper was 9,209,944, with a land area of . According to the most recent definition agreed upon by the federal and state governments, the population of Greater Mexico City is 21,804,515, which makes it the sixth-largest metropolitan area in the world, the second-largest urban agglomeration in the Western Hemisphere (behind São Paulo, Brazil), and the largest Spanish-speaking city (city proper) in the world. Greater Mexico City has a GDP of $411 billion in 2011, which makes it one of the most productive urb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guadalajara
Guadalajara ( , ) is a metropolis in western Mexico and the capital of the state of Jalisco. According to the 2020 census, the city has a population of 1,385,629 people, making it the 7th largest city by population in Mexico, while the Guadalajara metropolitan area has a population of 5,268,642 people, making it the third-largest metropolitan area in the country and the twentieth largest metropolitan area in the Americas Guadalajara has the second-highest population density in Mexico, with over 10,361 people per square kilometer. Within Mexico, Guadalajara is a center of business, arts and culture, technology and tourism; as well as the economic center of the Bajío region. It usually ranks among the 100 most productive and globally competitive cities in the world. It is home to numerous landmarks, including Guadalajara Cathedral, the Teatro Degollado, the Templo Expiatorio, the UNESCO World Heritage site Hospicio Cabañas, and the San Juan de Dios Market—the largest indoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Geography Of Sonora"){kind=logo}
.jpg "Click for more on -> Guadalajara")