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Zinc Mining In The United States
Zinc mining in the United States produced of zinc in 2019, making it the world's fourth-largest zinc producer, after China, Australia, and Peru. Most US zinc came from the Red Dog mine in Alaska. The industry employed about 2,500 in mining and milling, and 250 in smelting. Current zinc-mining districts In 2019 zinc was mined in six States at 15 mines operated by five companies. Red Dog Mine, Alaska In 2019, 552,400 tonnes of zinc, 71 percent of US mined zinc production, and 4.2 percent of world zinc production, came from Teck Resources' Red Dog mine, the world's most productive zinc mine, in northwest Alaska, near Kotzebue. The mine opened in 1989. The zinc is shipped as concentrate to foreign smelters. The Red Dog is a polymetallic deposit, which also produces lead and silver concentrates. Admiralty Island, Alaska Hecla Mining's Admiralty mining district#Greens Creek mine (operating), Greens Creek mine located south-southwest of Juneau, Alaska, on Admiralty Island, opened in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Zinc 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 Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nyrstar
Nyrstar is a global multi-metals business, with a market leading position in zinc and lead and growing positions in other base and precious metals, such as copper, gold and silver. Nyrstar has mining and smelting operations located in Europe, North America and Australia. Nyrstar was created in 2007 by combining the zinc smelting and alloying operations of Zinifex (an Australian mining company, now merged with Oxiana Limited to form OZ Minerals) and Umicore (a Belgian materials technology company). It is incorporated in Belgium and has its corporate office in Switzerland. Nyrstar is listed on Euronext Brussels. Nyrstar was acquired by Trafigura in 2019. Operations Nyrstar has 4 mining operations located in North America. Nyrstar has 6 smelters (in Australia, Belgium, France, Netherlands, and the United States) and 1 fumer in Norway. Trafigura Trafigura Group Pte. Ltd. is a Singaporean-based Swiss multinational commodity trading company founded in 1993 that trades in base meta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphalerite
Sphalerite (sometimes spelled sphaelerite) is a sulfide mineral with the chemical formula . It is the most important ore of zinc. Sphalerite is found in a variety of deposit types, but it is primarily in Sedimentary exhalative deposits, sedimentary exhalative, Carbonate-hosted lead-zinc ore deposits, Mississippi-Valley type, and Volcanogenic massive sulfide ore deposit, volcanogenic massive sulfide deposits. It is found in association with galena, chalcopyrite, pyrite (and other sulfide mineral, sulfides), calcite, dolomite (mineral), dolomite, quartz, rhodochrosite, and fluorite. German geologist Ernst Friedrich Glocker discovered sphalerite in 1847, naming it based on the Greek word ''sphaleros'', meaning "deceiving", due to the difficulty of identifying the mineral. In addition to zinc, sphalerite is an ore of cadmium, gallium, germanium, and indium. Miners have been known to refer to sphalerite as ''zinc blende'', ''black-jack'', and ''ruby blende''. Marmatite is an opaque ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thallium
Thallium is a chemical element with the Symbol (chemistry), symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently in 1861, in residues of sulfuric acid production. Both used the newly developed method of flame spectroscopy, in which thallium produces a notable green spectral line. Thallium, from Greek language, Greek , , meaning "green shoot" or "twig", was named by Crookes. It was isolated by both Lamy and Crookes in 1862; Lamy by electrolysis, and Crookes by precipitation and melting of the resultant powder. Crookes exhibited it as a powder precipitated by zinc at the international exhibition, which opened on 1 May that year. Thallium tends to form the +3 and +1 oxidation states. The +3 state resembles that of the other elements in Boron Group, group 13 (boron, aluminium, galli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indium
Indium is a chemical element with the symbol In and atomic number 49. Indium is the softest metal that is not an alkali metal. It is a silvery-white metal that resembles tin in appearance. It is a post-transition metal that makes up 0.21 parts per million of the Earth's crust. Indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Chemically, indium is similar to gallium and thallium, and it is largely intermediate between the two in terms of its properties. Indium was discovered in 1863 by Ferdinand Reich and Hieronymous Theodor Richter by spectroscopic methods. They named it for the indigo blue line in its spectrum. Indium was isolated the next year. Indium is a minor component in zinc sulfide ores and is produced as a byproduct of zinc refinement. It is most notably used in the semiconductor industry, in low-melting-point metal alloys such as solders, in soft-metal high-vacuum seals, and in the production of transparent conductive coati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germanium
Germanium is a chemical element with the symbol Ge and atomic number 32. It is lustrous, hard-brittle, grayish-white and similar in appearance to silicon. It is a metalloid in the carbon group that is chemically similar to its group neighbors silicon and tin. Like silicon, germanium naturally reacts and forms complexes with oxygen in nature. Because it seldom appears in high concentration, germanium was discovered comparatively late in the discovery of the elements. Germanium ranks near fiftieth in relative abundance of the elements in the Earth's crust. In 1869, Dmitri Mendeleev predicted its existence and some of its properties from its position on his periodic table, and called the element ekasilicon. In 1886, Clemens Winkler at Freiberg University found the new element, along with silver and sulfur, in the mineral argyrodite. Winkler named the element after his country, Germany. Germanium is mined primarily from sphalerite (the primary ore of zinc), though germanium is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gallium
Gallium is a chemical element with the symbol Ga and atomic number 31. Discovered by French chemist Paul-Émile Lecoq de Boisbaudran in 1875, Gallium is in group 13 of the periodic table and is similar to the other metals of the group (aluminium, indium, and thallium). Elemental gallium is a soft, silvery metal in standard temperature and pressure. In its liquid state, it becomes silvery white. If too much force is applied, the gallium may fracture conchoidally. Since its discovery in 1875, gallium has widely been used to make alloys with low melting points. It is also used in semiconductors, as a dopant in semiconductor substrates. The melting point of gallium is used as a temperature reference point. Gallium alloys are used in thermometers as a non-toxic and environmentally friendly alternative to mercury, and can withstand higher temperatures than mercury. An even lower melting point of , well below the freezing point of water, is claimed for the alloy galinstan (62– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cadmium
Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of its compounds, and like mercury, it has a lower melting point than the transition metals in groups 3 through 11. Cadmium and its congeners in group 12 are often not considered transition metals, in that they do not have partly filled ''d'' or ''f'' electron shells in the elemental or common oxidation states. The average concentration of cadmium in Earth's crust is between 0.1 and 0.5 parts per million (ppm). It was discovered in 1817 simultaneously by Stromeyer and Hermann, both in Germany, as an impurity in zinc carbonate. Cadmium occurs as a minor component in most zinc ores and is a byproduct of zinc production. Cadmium was used for a long time as a corrosion-resistant plating on steel, and cadmium compounds are used as red, orang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clarksville, Tennessee
Clarksville is the county seat of Montgomery County, Tennessee, United States. It is the fifth-largest city in the state behind Nashville, Memphis, Knoxville, and Chattanooga. The city had a population of 166,722 as of the 2020 United States census. It is the principal central city of the Clarksville, TN–KY metropolitan statistical area, which consists of Montgomery and Stewart counties in Tennessee, and Christian and Trigg counties in Kentucky. The city was founded in 1785 and incorporated in 1807, and named for General George Rogers Clark, frontier fighter and Revolutionary War hero, and brother of William Clark of the Lewis and Clark Expedition. Clarksville is the home of Austin Peay State University; ''The Leaf-Chronicle'', the oldest newspaper in Tennessee; and neighbor to the Fort Campbell, United States Army post. Site of the 101st Airborne Division (Air Assault), Fort Campbell is located about from downtown Clarksville, and spans the Tennessee-Kentucky state ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Base Metal
A base metal is a common and inexpensive metal, as opposed to a precious metal such as gold or silver. In numismatics, coins often derived their value from the precious metal content; however, base metals have also been used in coins in the past and today. Specific definitions In contrast to noble metals, base metals may be distinguished by oxidizing or corroding relatively easily and reacting variably with diluted hydrochloric acid (HCl) to form hydrogen. Examples include iron, nickel, lead and zinc. Copper is also considered a base metal because it oxidizes relatively easily, although it does not react with HCl. In mining and economics, the term base metals refers to industrial non-ferrous metals excluding precious metals. These include copper, lead, nickel and zinc. The U.S. Customs and Border Protection agency is more inclusive in its definition of commercial base metals. Its list includes—in addition to copper, lead, nickel, and zinc—the following metals: iron and st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wythe County
Wythe County is a county located in the southwestern part of the U.S. state of Virginia. As of the 2020 census, the population was 28,290. Its county seat is Wytheville. History Wythe County was formed from Montgomery County in 1790. It was named after George Wythe, the first Virginian signer of the Declaration of Independence. During the Civil War the Battle of Cove Mountain was fought in the county. Prior to Wythe County's creation, what is now the Wythe County community of Austinville served as the county seat for Fincastle County, an extinct Virginia county whose borders stretched from Roanoke, Virginia, to the Mississippi River – a county roughly the size of half the State of Texas. Wythe County's Austinville community was founded by Stephen and his brother Moses Austin, father of the famous Stephen F. Austin. In the 1790s the Austins took over the mines that produced lead and zinc; the town was named for the Austin surname, and not for any one particular Austin of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardin, Oklahoma
Cardin is a ghost town in Ottawa County, Oklahoma, United States. The population was 150 at the 2000 census, but plummeted to 3 at the 2010 census in April 2010. A former center of zinc and lead mining in northeastern Oklahoma, the town is located within the Tar Creek Superfund site designated in 1983 because of extensive environmental contamination. The vast majority of its residents accepted federal buyout offers of their properties, and the town's population dropped to zero in November 2010.Sheila Stogsdill"Cardin population drops to 0 as buyout completed" ''Tulsa World'', November 17, 2010. History Early history When it was founded as a mining town in 1913, this was first known as Tar Creek, after a stream in the area. In 1918, William Oscar Cardin (Quapaw), and his wife, Isa (Wade) Cardin, had his 40-acre allotment platted and recorded with the county clerk. The town name was changed from Tar Creek to Cardin in 1920. There were 2,640 residents in 1920, many of them mine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
