Silver Mining In The United States
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Silver Mining In The United States
Silver mining in the United States began on a major scale with the discovery of the Comstock Lode in Nevada in 1858. The industry suffered greatly from the demonetization of silver in 1873 by the Coinage Act of 1873, known pejoratively as the " Crime of 73", but silver mining continues today. United States mines produced 1,170 tons of silver in 2014, 17% of the silver it used. 63% of consumption was imported, from Mexico, Canada, Peru and Chile, and the remainder was derived from recycling. Three US mines had silver as their primary product, and 39 mines reported silver as a byproduct of gold and base metals production. Alaska was the country's leading silver-producing state, followed by Nevada and Idaho. Interest in silver mining increased in recent years because of an increased price for the metal: the average silver price increased from $4.39 per troy ounce for the year 2001, to $13.45 per troy ounce for 2007. In 2011, silver prices rose to almost $49 per troy ounce in April be ...
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US Annual Silver Production
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americans ...
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Tombstone, Arizona
Tombstone is a historic city in Cochise County, Arizona, United States, founded in 1877 by prospector Ed Schieffelin in what was then Pima County, Arizona Territory. It became one of the last boomtowns in the American frontier. The town grew significantly into the mid-1880s as the local mines produced $40 to $85 million in silver bullion, the largest productive silver district in Arizona. Its population grew from 100 to around 14,000 in less than seven years. It is best known as the site of the Gunfight at the O.K. Corral and presently draws most of its revenue from tourism. It also houses the highest-rated brewery in the state of Arizona. The town was established on Goose Flats, a mesa above the Goodenough Mine. Within two years of its founding, although far distant from any other metropolitan area, Tombstone had a bowling alley, four churches, an ice house, a school, two banks, three newspapers, and an ice cream parlor, alongside 110 saloons, 14 gambling halls, and numerous ...
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Calico, San Bernardino County, California
Calico is a ghost town and former mining town in San Bernardino County, California, United States. Located in the Calico Mountains of the Mojave Desert region of Southern California, it was founded in 1881 as a silver mining town, and was later converted into a county park named ''Calico Ghost Town''. Located off Interstate 15, it lies from Barstow and 3 miles from Yermo. Giant letters spelling ''CALICO'' are visible, from the highway, on the Calico Peaks behind it. Walter Knott purchased Calico in the 1950s, and architecturally restored all but the five remaining original buildings to look as they did in the 1880s. Calico received California Historical Landmark #782, and in 2005 was proclaimed by then-Governor Arnold Schwarzenegger to be California's Silver Rush Ghost Town. History In 1881, four prospectors were leaving Grapevine Station (present day Barstow, California) for a mountain peak to the northeast. After they described the peak as "calico-colored", the peak, the ...
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Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ...
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Paleozoic
The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ''zōḗ'' (), "life", meaning "ancient life" ). It is the longest of the Phanerozoic eras, lasting from , and is subdivided into six geologic periods (from oldest to youngest): # Cambrian # Ordovician # Silurian # Devonian # Carboniferous # Permian The Paleozoic comes after the Neoproterozoic Era of the Proterozoic Eon and is followed by the Mesozoic Era. The Paleozoic was a time of dramatic geological, climatic, and evolutionary change. The Cambrian witnessed the most rapid and widespread diversification of life in Earth's history, known as the Cambrian explosion, in which most modern phyla first appeared. Arthropods, molluscs, fish, amphibians, reptiles, and synapsids all evolved during the Paleozoic. Life began in the ocean ...
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Cerro Gordo Mines
The Cerro Gordo Mines are a collection of abandoned mines located in the Inyo Mountains, in Inyo County, near Lone Pine, California. Mining operations spanned 1866 to 1957, producing high grade silver, lead, zinc ore, and more rarely gold ore and copper ore. Some ore was smelted on site, but larger capacity smelters were eventually constructed along the shore of nearby Owens Lake. These smelting operations were the beginnings of the towns of Swansea and Keeler. Most of the metal ingots produced here were transported to Los Angeles, but transportation difficulties hindered the success of the mines. Mining of silver and lead peaked in the early 1880s, with a second mining boom producing zinc in the 1910s. During its peak, Cerro Gordo was home to some 4,700 people and the site is known as a California ghost town today. History Discovery of the silver ore is credited to Pablo Flores, who began mining and smelting operations near the summit of Buena Vista Peak in 1865. Increasing mi ...
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Panamint, California
Panamint City is a ghost town in the Panamint Range, near Death Valley Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. During summer, it is the Highest temperature recorded on Earth, hottest place on Earth. Death Valley's Badwater Basin is the ..., in Inyo County, California, US. It is also known by the official Board of Geographic Names as Panamint. Panamint was a boom town founded after silver and copper were found there in 1872. By 1874, the town had a population of about 2,000. Its main street was one mile (1.6 km) long. Panamint had its own newspaper, the ''Panamint News''. Silver was the principal product mined in the area. The town is located about three miles northwest of Sentinel Peak (Inyo County, California), Sentinel Peak. According to the National Geographic Names Database, NAD27 latitude and longitude for the locale are , and the feature ID number is 1661185. The elevation of this loc ...
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Panamint City, California
Panamint City is a ghost town in the Panamint Range, near Death Valley, in Inyo County, California, US. It is also known by the official Board of Geographic Names as Panamint. Panamint was a boom town founded after silver and copper were found there in 1872. By 1874, the town had a population of about 2,000. Its main street was one mile (1.6 km) long. Panamint had its own newspaper, the ''Panamint News''. Silver was the principal product mined in the area. The town is located about three miles northwest of Sentinel Peak. According to the National Geographic Names Database, NAD27 latitude and longitude for the locale are , and the feature ID number is 1661185. The elevation of this location is identified as being 6,280 feet AMSL. The similar-sounding Panamint Springs, California, is located about 25.8 miles at 306.4 degrees off true north near Panamint Junction. History Panamint City is the site of the largest and most elaborate group of Coso Painted Style pictographs. The ...
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Randsburg, California
Randsburg (formerly Rand Camp) is a census-designated place (CDP) in Kern County, California, United States. Randsburg is located south of Ridgecrest, at an elevation of . The population was 69 in the 2010 census, down from 77 in the 2000 census. Geography Randsburg is located at . It is on the west side of U.S. Route 395 between Kramer Junction to the south and Ridgecrest to the north. Randsburg is in the Rand Mountains, and is separated by a ridge from the neighboring community of Johannesburg. According to the United States Census Bureau, the CDP has a total area of , over 99% of it land. Climate Randsburg has a cold semi-arid climate (BSk) found on the western edge of the Mojave Desert with very hot, dry summers and cool winters. History Gold was discovered at Yellow Aster Mine in 1895 and a mining camp quickly formed named Rand Camp. Both mine and camp were named after the gold mining region in South Africa. The first post office at Randsburg opened in 1896. Touri ...
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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 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 ...
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Inyo County, California
Inyo County () is a county in the eastern central part of the U.S. state of California, located between the Sierra Nevada and the state of Nevada. In the 2020 census, the population was 19,016. The county seat is Independence. Inyo County is on the east side of the Sierra Nevada and southeast of Yosemite National Park in Central California. It contains the Owens River Valley; it is flanked to the west by the Sierra Nevada and to the east by the White Mountains and the Inyo Mountains. With an area of 10,192 square miles (26,397 km2), Inyo County is the second-largest county by area in California, after San Bernardino County. Almost one-half of that area is within Death Valley National Park. However, with a population density of 1.8 people per square mile, it also has the second-lowest population density in California, after Alpine County. History Present-day Inyo county has been the historic homeland for thousands of years of the Mono, Timbisha, Kawaiisu, and Nort ...
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Tungsten
Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isolated as a metal in 1783. Its important ores include scheelite and wolframite, the latter lending the element its alternate name. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all known elements barring carbon (which sublimes at normal pressure), melting at . It also has the highest boiling point, at . Its density is , comparable with that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work. However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw. Tungsten occurs in many ...
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