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Gold Panning
Gold panning, or simply ''panning'', is a form of placer mining and traditional mining that extracts gold from a placer deposit using a pan. The process is one of the simplest ways to extract gold, and is popular with geology enthusiasts especially because of its low cost and relative simplicity. The first recorded instances of placer mining are from ancient Rome, where gold and other precious metals were extracted from streams and mountainsides using sluices and panning (). However, the productivity rate is comparatively smaller compared to other methods such as the rocker box or large extractors, such as those used at the Super Pit gold mine, in Kalgoorlie, Western Australia, which has led to panning being largely replaced in the commercial market. Process Gold panning is a simple process. Once a suitable placer deposit is located, some alluvial deposits are scooped into a pan, where they are then wetted and loosed from attached soils by soaking, fingering, and aggress ...
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Gold Panning At Bonanza Creek
Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals. It is one of the least reactivity (chemistry), reactive chemical elements, being the second-lowest in the reactivity series. It is solid under standard temperature and pressure, standard conditions. Gold often occurs in free elemental (native state (metallurgy), native state), as gold nugget, nuggets or grains, in rock (geology), rocks, vein (geology), veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as in 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 ...
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Black Sand
Black sand is sand that is black in color. One type of black sand is a heavy, glossy, partly magnetic mixture of usually fine sands containing minerals such as magnetite, found as part of a placer deposit. Another type of black sand, found on beaches near a volcano, consists of tiny fragments of basalt. While some beaches are predominantly made of black sand, even other color beaches (e.g. gold and white) can often have deposits of black sand, particularly after storms. Larger waves can sort out sand grains leaving deposits of heavy minerals visible on the surface of erosion escarpments. Placer deposits Black sands are used by miners and prospectors to indicate the presence of a placer formation. Placer mining activities produce a concentrate that is composed mostly of black sand. Black sand concentrates often contain additional valuables, other than precious metals: rare earth elements, thorium, titanium, tungsten, zirconium and others are often fractionated during ...
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Gold Mining
Gold mining is the extraction of gold by mining. Historically, mining gold from Alluvium, alluvial deposits used manual separation processes, such as gold panning. The expansion of gold mining to ores that are not on the surface has led to more complex extraction processes such as pit mining and gold cyanidation. In the 20th and 21st centuries, most volume of mining was done by large corporations. However, the value of gold has led to millions of small, Artisanal mining, artisanal miners in many parts of the Global South. Like all mining, Mining#Human rights, human rights and Environmental effects of mining, environmental issues are common in the gold mining industry, and can result in environmental conflict. In mines with less regulation, health and safety risks are much higher. History The exact date that humans first began to mine gold is unknown, but some of the oldest known gold artifacts were found in the Varna Necropolis in Bulgaria. The graves of the necropolis were ...
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Russia Iron
Russia iron or Russian iron refers to a type of sheet iron produced in Russia during the 19th and early 20th century. This iron sheeting had a smooth, glossy black surface coating, sometimes greenish-tinged, which did not flake upon bending and made the sheets highly resistant to rusting. As well as its corrosion resistance, the finish would also withstand high heat; these two properties accounted for most of its uses. Kodak used it around 1906 for the manufacture of their photographic enlargers. These properties led to it being the standard for manufacturing gold pans at the turn of the 20th century. Uses This sheet-iron was used in Russia for stove flues and for roofing, among other tasks. Exported in quantity to the United States, it was notably used there for the cladding of steam locomotive boilers, where it found favor because paints of the time could not withstand the heat to which boiler cladding was subjected; its fine decorative finish went well with the brightly painted ...
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Edward Otho Cresap Ord, II
Edward Otho Cresap Ord II (November 9, 1858 – April 4, 1923) was an American military officer, artist, writer, and inventor. He was a United States Army Major (United States), Major who served with the 22nd Infantry Regiment (United States), 22nd Infantry Regiment during the Indian Wars, the Spanish–American War and the Philippine–American War. He helped direct relief work after the 1906 San Francisco earthquake. He was a military instructor, an expert linguist and spent time in painting and writing poetry. He was also an inventor who patented a new type of gold panning, gold pan and different types of rifle and handgun Iron sight, sights. Early life Ord was the eldest male of 15 children (13 lived past childhood) and was born at Benicia Arsenal, Benicia Barracks, California, on November 9, 1858. His father, Edward Ord, Edward Otho Cresap Ord, married Mary Mercer Thompson on October 14, 1854. The senior Ord was a career military officer who was a hero in the American Ci ...
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Mercury (element)
Mercury is a chemical element; it has Symbol (chemistry), symbol Hg and atomic number 80. It is commonly known as quicksilver. A Heavy metal element, heavy, silvery d-block element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature. Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by Mill (grinding), grinding natural cinnabar or synthetic mercuric sulfide. Exposure to mercury and mercury-containing organic compounds is toxic to the nervous system, immune system and kidneys of humans and other animals; mercury poisoning can result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury) either directly or through mechanisms of biomagnification. Mercu ...
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Panning Gold In The Early Colonial Period, 1535
Pan or PAN may refer to: Food * Pan (cooking), a piece of cooking equipment * Harina P.A.N., a pre-cooked corn meal * Pan or Paan, a North Indian term for betel Prefix * ''Pan-'', a prefix meaning "all", "of everything", or "involving all members" of a group People * Pan (surname), Chinese family name (潘 or 盤) * Pen Ran (), Cambodian singer and songwriter whose name is sometimes Romanized as Pan Ron Arts, entertainment, and media Card games * Pan (game), a shedding card game of Polish origin * Panguingue or Pan, a gambling card game Fictional characters * Pan (''Dragon Ball''), in ''Dragon Ball'' media * Peter Pan, created by James Barrie Films * ''Pan'' (1922 film), Norwegian film * ''Pan'' (1995 film), a Danish/Norwegian/German film * ''Pan'' (2015 film), film Literature and publishing * ''Pan'' (novel), by Knut Hamsun * ''Pan'' (magazine) an arts and literary review * Pan Books, a publisher Music Musical instruments * Pan, short for steel ...
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Pans Et Batée De Diverses Origines
Cookware and bakeware is food preparation equipment, such as cooking pots, pans, baking sheets etc. used in kitchens. Cookware is used on a stove or range cooktop, while bakeware is used in an oven. Some utensils are considered both cookware and bakeware. There is a great variety of cookware and bakeware in shape, material, and inside surface. Some materials conduct heat well; some retain heat well. Some surfaces are non-stick; some require seasoning. Some pots and their lids have handles or knobs made of low thermal conductance materials such as bakelite, plastic or wood, which make them easy to pick up without oven gloves. A good cooking pot design has an "overcook edge" which is what the lid lies on. The lid has a dripping edge that prevents condensation fluid from dripping off when handling the lid (taking it off and holding it 45°) or putting it down. History The history of cooking vessels before the development of pottery is minimal due to the limited archaeolo ...
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Vein (geology)
In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation. The hydraulic flow involved is usually due to hydrothermal circulation. Veins are classically thought of as being planar fractures in rocks, with the crystal growth occurring normal to the walls of the cavity, and the crystal protruding into open space. This certainly is the method for the formation of some veins. However, it is rare in geology for significant open space to remain open in large volumes of rock, especially several kilometers below the surface. Thus, there are two main mechanisms considered likely for the formation of veins: ''open-space filling'' and ''crack-seal growth''. Open space filling Open space filling is the hallmark of epithermal vein systems, such as a stockwork, in greisens or in certain skarn environments. For open space fillin ...
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Gold Nugget
A gold nugget is a naturally occurring piece of Native metal, native gold. Watercourses often concentrate nuggets and finer gold in placer deposit, placers. Nuggets are recovered by placer mining, but they are also found in residual deposits where the gold-bearing vein (geology), veins or lodes are weathered. Nuggets are also found in the tailings piles of previous mining operations, especially those left by gold mining dredges. Formation Nuggets are gold fragments weathered out of an original lode. They often show signs of abrasive polishing by stream action, and sometimes still contain inclusions of quartz or other lode matrix material. A 2007 study on Australian nuggets ruled out speculative theories of supergene (geology), supergene formation via ''in-situ'' precipitation, cold welding of smaller particles, or bacterial concentration, since crystal structures of all of the nuggets examined proved they were originally formed at high temperature deep underground (i.e., they wer ...
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Recreational Gold Mining
Recreational gold mining and prospecting has become a popular outdoor activity in several countries, including New Zealand (particularly in Otago), Australia, South Africa, Wales (at Dolaucothi and in Gwynedd), Canada and the United States especially. Recreational mining is typically small-scale placer mining but has been challenged for environmental reasons. The disruption of historic gold placer deposits poses risks of reintroducing pollutants from past mining activities, such as mercury remaining in mine deposits and tailings. Australia Australia does not prevent the private ownership of any minerals found in the land. At one time if individuals were to discover gold (or any other minerals) in their property, it would belong to the Crown, being the Australian Government and not to private entitlement. Today this is not so, and individuals can search and retrieve minerals with the acquisition of a miners permit that can be bought from the relevant Mining Department. Today, ...
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Hobby
A hobby is considered to be a regular activity that is done for enjoyment, typically during one's leisure time. Hobbies include collecting themed items and objects, engaging in creative and artistic pursuits, playing sports, or pursuing other amusements or Avocation, avocations. Participation in hobbies encourages acquiring substantial skills and knowledge in that area. A list of hobbies changes with renewed interests and developing fashions, making it diverse and lengthy. Hobbies tend to follow trends in society. For example, stamp collecting was popular during the nineteenth and twentieth centuries as postal systems were the main means of communication; , video games became more popular following technological advances. The advancing production, technology, and labour movements of the nineteenth century provided workers with more leisure time to engage in hobbies. Because of this, the efforts of people investing in hobbies has increased with time. There are various #Types of ...
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