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Wodginite
Wodginite is a manganese, tin, tantalum oxide mineral with the chemical formula . It may also include significant amounts of niobium. Background Wodginite was first described in 1963 for an occurrence in the Wodgina pegmatite, Wodgina, Pilbara Region, Western Australia. Typical occurrence of wodginite occurs in zoned pegmatites in amphibolite. It is associated with tantalite, albite, quartz, muscovite, tapiolite, microlite and microcline. It occurs in pegmatites in a wide variety of locations. The most studied is the Tanco mine, Tanco pegmatite in Manitoba, Canada; also in Red Lake, Ontario. It is reported from the Strickland quarry, Portland, Middlesex County, Connecticut; the Herbb #2 pegmatite, Powhatan County, Virginia; the McAllister mine, Rockford, Coosa County, Alabama; the Peerless mine, Pennington County, South Dakota. Also from Paraíba and Minas Gerais, Brazil; Krasonice, Czech Republic; Orivesi, Finland; Kalba, eastern Kazakhstan; Ankole, Uganda; Miami district, Zim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxide Mineral
The oxide mineral class includes those minerals in which the oxide anion (O2−) is bonded to one or more metal alloys. The hydroxide-bearing minerals are typically included in the oxide class. Minerals with complex anion groups such as the silicates, sulfates, carbonates and phosphates are classed separately. Simple oxides *XO form **Periclase group *** Periclase *** Manganosite **Zincite group *** Zincite *** Bromellite *** Tenorite *** Litharge * form ** Cuprite **Ice * form **Hematite group ***Corundum ***Hematite *** Ilmenite * form **Rutile group ***Rutile *** Pyrolusite *** Cassiterite ** Baddeleyite ** Uraninite ** Thorianite * form **Spinel group ***Spinel ***Gahnite ***Magnetite *** Franklinite ***Chromite ** Chrysoberyl ** Columbite *Hydroxide subgroup: **Brucite ** Manganite ** Romanèchite **Goethite group: *** Diaspore ***Goethite Nickel–Strunz class 4: oxides IMA-CNMNC proposes a new hierarchical scheme (Mills et al., 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxide Minerals
The oxide mineral class includes those minerals in which the oxide anion (O2−) is bonded to one or more metal alloys. The hydroxide-bearing minerals are typically included in the oxide class. Minerals with complex anion groups such as the Silicate mineral, silicates, Sulfate mineral, sulfates, carbonate mineral, carbonates and Phosphate mineral, phosphates are classed separately. Simple oxides *XO form **Periclase group ***Periclase ***Manganosite **Zincite group ***Zincite ***Bromellite ***Tenorite ***Litharge * form **Cuprite **Ice * form **Hematite group ***Corundum ***Hematite ***Ilmenite * form **Rutile group ***Rutile ***Pyrolusite ***Cassiterite **Baddeleyite **Uraninite **Thorianite * form **Spinel group ***Spinel ***Gahnite ***Magnetite ***Franklinite ***Chromite **Chrysoberyl **Columbite *Hydroxide subgroup: **Brucite **Manganite **Romanèchite **Goethite group: ***Diaspore ***Goethite Nickel–Strunz class 4: oxides Internationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tantalum
Tantalum is a chemical element; it has Symbol (chemistry), symbol Ta and atomic number 73. It is named after Tantalus, a figure in Greek mythology. Tantalum is a very hard, ductility, ductile, lustre (mineralogy), lustrous, blue-gray transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as components of strong superalloy, high-melting-point alloys. It is a group 5 element, along with vanadium and niobium, and it always occurs in geologic sources together with the chemically similar niobium, mainly in the mineral groups tantalite, columbite, and coltan. The chemical inertness and very high melting point of tantalum make it valuable for laboratory and industrial equipment such as Chemical reactor, reaction vessels and vacuum furnaces. It is used in tantalum capacitors for electronic equipment such as computers. It is being investigated for use as a material for high-quality superconducting resonators in quantum proces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microlite
Microlite was once known as a pale-yellow, reddish-brown, or black isometric mineral composed of sodium calcium tantalum oxide with a small amount of fluorine. Its chemical formula is . Today it is a name of a group of oxide minerals of a similar stoichiometry having tantalum prevailing over titanium and niobium. The microlite group belongs to a large pyrochlore supergroup that occurs in pegmatites and constitutes an ore of tantalum. It has a Mohs hardness of 5.5 and a variable specific gravity of 4.2 to 6.4. It occurs as disseminated microscopic subtranslucent to opaque octahedral crystals with a refractive index of 2.0 to 2.2. Microlite is also called djalmaite, but both names are now obsolete. "Microlite" occurs as a primary mineral in lithium-bearing granite pegmatites, and in miarolitic cavities in granites. Association minerals include: albite, lepidolite, topaz, beryl, tourmaline, spessartine, tantalite and fluorite. "Microlite" was first described in 1835 for an o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population, seventh-largest by population, with over 212 million people. The country is a federation composed of 26 Federative units of Brazil, states and a Federal District (Brazil), Federal District, which hosts the capital, Brasília. List of cities in Brazil by population, Its most populous city is São Paulo, followed by Rio de Janeiro. Brazil has the most Portuguese-speaking countries, Portuguese speakers in the world and is the only country in the Americas where Portuguese language, Portuguese is an Portuguese-speaking world, official language. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazil, coastline of . Covering roughly half of South America's land area, it Borders of Brazil, borders all other countries and ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minas Gerais
Minas Gerais () is one of the 27 federative units of Brazil, being the fourth largest state by area and the second largest in number of inhabitants with a population of 20,539,989 according to the 2022 Brazilian census, 2022 census. Located in the Southeast Region, Brazil, Southeast Region of the country, it is bordered to south and southwest by São Paulo (state), São Paulo; Mato Grosso do Sul to the west; Goiás and the Federal District (Brazil), Federal District to the northwest; Bahia to the north and northeast; Espírito Santo to the east; and Rio de Janeiro (state), Rio de Janeiro to the southeast. The state's capital and largest city, Belo Horizonte, is a major urban and finance center in Brazil, being the List of largest cities in Brazil#Top 115 most populous cities and state capitals, sixth most populous municipality in the country while its Greater Belo Horizonte, metropolitan area ranks as the List of metropolitan areas in Brazil, third largest in Brazil with just ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraíba
Paraíba ( , ; ) is a states of Brazil, state of Brazil. It is located in the Brazilian Northeast, and it is bordered by Rio Grande do Norte to the north, Ceará to the west, Pernambuco to the south and the Atlantic Ocean to the east. Paraíba is the third most densely populated state of the Northeast; João Pessoa, Paraíba, João Pessoa, the coastal state capital, and Campina Grande, in the countryside, rank among the fifteen largest Municipalities of Brazil, municipalities in the Northeast of Brazil. The state is home to 1.9% of the Brazilian population and produces 0.9% of the Brazilian GDP and it is divided into 223 municipalities. Paraíba is mostly populated along the Atlantic coast, which extends as far as Ponta do Seixas, the easternmost point of the Americas. The state is a tourist and industrial hotspot; it is known for its cultural heritage, amenable climate and geographical features, ranging from the seaside beaches to the Borborema Plateau. It is named after the Par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennington County, South Dakota
Pennington County is a County (United States), county in the U.S. state of South Dakota. As of the 2020 United States census, 2020 census, the population was 109,222, making it the List of counties in South Dakota, second most populous county in South Dakota, and was estimated to be 115,979 in 2024. Its county seat is Rapid City, South Dakota, Rapid City. The county was created on January 11, 1875, and was organized on April 19, 1877. It is named for John L. Pennington, fifth List of Governors of Dakota Territory, Governor of Dakota Territory, who held office in 1875 when the county was formed. Pennington County is included in the Rapid City Rapid City metropolitan area, metropolitan statistical area. It is also the location of Mount Rushmore. History In 1874, US Army commander George A. Custer led a group into the Black Hills area. He and some of his officers climbed the crest now called Black Elk Peak, and made a toast to US General William S. Harney. They named the peak for H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coosa County, Alabama
Coosa County is a county located in the east central portion of the U.S. state of Alabama. As of the 2020 census the population was 10,387. Its county seat is Rockford. Its name derives from a town of the Creek tribe and the Coosa River, which forms one of the county borders. Coosa County is included in the Talladega- Sylacauga, AL Micropolitan Statistical Area, which is also included in the Birmingham- Hoover-Talladega, AL Combined Statistical Area. History The county was established on December 18, 1832, formed from parts of Montgomery and Shelby counties. It gained a small snippet from Montgomery County in 1837 and lost a portion to the south upon the creation of Elmore County in 1866. Geography According to the United States Census Bureau, the county has a total area of , of which is land and (2.3%) is water. The county is located in the Piedmont region of the state. Major highways * U.S. Highway 231 * U.S. Highway 280 * Alabama State Route 9 * Alabama Stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powhatan County, Virginia
Powhatan County () is a county located in the Commonwealth of Virginia. As of the 2020 census, the population was 30,033. Its county seat is Powhatan. Powhatan County is included in the Greater Richmond Region. The James River forms the county's northern border, and the Appomattox River is on the south side. The county is named for the paramount chief of the powerful confederacy of tribes of Algonquian-speaking Native Americans in the Tidewater in 1607, when the British settled at Jamestown. Historically this Piedmont area had been occupied by the Siouan-speaking Monacan. They moved further west, abandoning villages in this area, under pressure from colonists. In 1700 French Huguenot refugees settled at a Monacan abandoned village, which they renamed as Manakin Town. It was located about 20 miles above the falls on the James River. French refugees also settled on the other side of the river in two villages now known collectively as Manakin-Sabot in nearby Goochland Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middlesex County, Connecticut
Middlesex County is a county in the south central part of the U.S. state of Connecticut. As of the 2020 census, the population was 164,245. The county was created in May 1785 from portions of Hartford County and New London County. Middlesex County is included in the Hartford- East Hartford- Middletown metropolitan statistical area known as Greater Hartford. As with all eight of Connecticut's counties, there is now no county government and no county seat. In Connecticut, towns are responsible for all local government activities, including local police, fire and rescue, snow removal, and schools. In a few cases, neighboring towns will share certain resources, e.g. water, gas, etc. On June 6, 2022, the U.S. Census Bureau formally recognized Connecticut's nine councils of governments as county equivalents instead of the state's eight counties. Connecticut's county governments were disbanded in 1960, and the councils of governments took over some of the local governmental func ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Lake, Ontario
Red Lake is a municipality with town status in the Provinces and territories of Canada, Canadian province of Ontario, located northwest of Thunder Bay and less than from the Manitoba border. The municipality consists of six small communities (Balmertown, Cochenour, Madsen, Ontario, Madsen, McKenzie Island, Red Lake, and Starratt-Olsen) and had a population of 4,094 people in the 2021 Canadian census. Red Lake is an enclave within Unorganized Kenora District. The municipality was formed on 1 July 1998, when the former incorporated townships of Golden and Red Lake were merged along with a small portion of Unorganized Kenora District. The name of the town comes from a local legend telling of two men from the Ojibwe, Chippewa tribe who stumbled across a large moose. The men proceeded to kill the moose, the blood of which drained into a nearby lake. The blood turned the lake's waters red in colour, ultimately giving the area its name. The name appears on the Bouchette map of 1875, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
