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Abellaite
Abellaite is a hydrous carbonate mineral discovered in the abandoned Eureka uranium mine in the village of La Torre de Capdella (Lleida province), Catalonia, Spain. The ideal chemical formula of abellaite is NaPb2(CO3)2(OH). It is named in honor of Joan Abella i Creus, a Catalan gemmologist who has long studied minerals from the Eureka mine and first found abellaite in the mine. A team composed, among others, by Jordi Ibáñez-Insa from the Institute of Earth Sciences Jaume Almera (CSIC) and by Joan Viñals and Xavier Llovet from the University of Barcelona, identified and characterized the mineral’s structure and chemical composition. Abellaite crystals are colorless to white, with a glassy or pearly appearance, and are easily crumbled. The mineral has a known synthetic analogue and is chemically similar to sanrománite. Robert Hazen et al. predicted its existence in 2015. Localities Catalonia, Spain: Eureka mine, Castell-estaó, La Torre de Cabdella, La Vall Fosca, El Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Carbonate Mineral
Carbonate minerals are those minerals containing the carbonate ion, . Carbonate divisions Anhydrous carbonates *Calcite group: trigonal **Calcite CaCO3 **Gaspéite (Ni,Mg,Fe2+)CO3 **Magnesite MgCO3 **Otavite CdCO3 **Rhodochrosite MnCO3 **Siderite FeCO3 **Smithsonite ZnCO3 **Spherocobaltite CoCO3 *Aragonite group: orthorhombic **Aragonite CaCO3 **Cerussite PbCO3 **Strontianite SrCO3 **Witherite BaCO3 **Rutherfordine UO2CO3 **Natrite Na2CO3 Anhydrous carbonates with compound formulas *Dolomite group: trigonal **Ankerite CaFe(CO3)2 **Dolomite (mineral), Dolomite CaMg(CO3)2 **Huntite Mg3Ca(CO3)4 **Minrecordite CaZn(CO3)2 **Barytocalcite BaCa(CO3)2 Carbonates with hydroxyl or halogen *Carbonate with hydroxide: monoclinic **Azurite Cu3(CO3)2(OH)2 **Hydrocerussite Pb3(CO3)2(OH)2 **Malachite Cu2CO3(OH)2 **Rosasite (Cu,Zn)2CO3(OH)2 **Phosgenite Pb2(CO3)Cl2 **Hydrozincite Zn5(CO3)2(OH)6 **Aurichalcite (Zn,Cu)5(CO3)2(OH)6 Hydrated carbonates *Hydromagnesite Mg5(CO3)4(OH)2.4H2O *Ikaite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hexagonal
In geometry, a hexagon (from Greek , , meaning "six", and , , meaning "corner, angle") is a six-sided polygon. The total of the internal angles of any simple (non-self-intersecting) hexagon is 720°. Regular hexagon A regular hexagon is defined as a hexagon that is both equilateral and equiangular. In other words, a hexagon is said to be regular if the edges are all equal in length, and each of its internal angle is equal to 120°. The Schläfli symbol denotes this polygon as \ . However, the regular hexagon can also be considered as the cutting off the vertices of an equilateral triangle, which can also be denoted as \mathrm\ . A regular hexagon is bicentric, meaning that it is both cyclic (has a circumscribed circle) and tangential (has an inscribed circle). The common length of the sides equals the radius of the circumscribed circle or circumcircle, which equals \tfrac times the apothem (radius of the inscribed circle). Measurement The longest diagonal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Carbonate Mineral
Carbonate minerals are those minerals containing the carbonate ion, . Carbonate divisions Anhydrous carbonates *Calcite group: trigonal **Calcite CaCO3 **Gaspéite (Ni,Mg,Fe2+)CO3 **Magnesite MgCO3 **Otavite CdCO3 **Rhodochrosite MnCO3 **Siderite FeCO3 **Smithsonite ZnCO3 **Spherocobaltite CoCO3 *Aragonite group: orthorhombic **Aragonite CaCO3 **Cerussite PbCO3 **Strontianite SrCO3 **Witherite BaCO3 **Rutherfordine UO2CO3 **Natrite Na2CO3 Anhydrous carbonates with compound formulas *Dolomite group: trigonal **Ankerite CaFe(CO3)2 **Dolomite (mineral), Dolomite CaMg(CO3)2 **Huntite Mg3Ca(CO3)4 **Minrecordite CaZn(CO3)2 **Barytocalcite BaCa(CO3)2 Carbonates with hydroxyl or halogen *Carbonate with hydroxide: monoclinic **Azurite Cu3(CO3)2(OH)2 **Hydrocerussite Pb3(CO3)2(OH)2 **Malachite Cu2CO3(OH)2 **Rosasite (Cu,Zn)2CO3(OH)2 **Phosgenite Pb2(CO3)Cl2 **Hydrozincite Zn5(CO3)2(OH)6 **Aurichalcite (Zn,Cu)5(CO3)2(OH)6 Hydrated carbonates *Hydromagnesite Mg5(CO3)4(OH)2.4H2O *Ikaite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
La Torre De Capdella
La Torre de Cabdella () or La Torre de Capdella is a village in the Provinces of Spain, province of Province of Lleida, Lleida and autonomous community of Catalonia, Spain. It has a population of . See also *Cabdella Lakes References External links * Government data pages Municipalities in Pallars Jussà {{Lleida-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Province Of Lleida
The Province of Lleida (; ; ) is one of the four provinces of Catalonia. It lies in northeastern Spain, in the western part of the autonomous community of Catalonia, and is bordered by the provinces of Girona, Barcelona, Tarragona, Zaragoza and Huesca and the country of France and the principality of Andorra. It is often popularly referred to as Ponent (i.e. the West). Of the population of 414,015 (2007), about 30% live in the capital, Lleida. Some other towns in the province of Lleida are La Seu d'Urgell (the archbishop of which is also the co-prince of Andorra), Mollerussa, Cervera, Tàrrega, and Balaguer. There are 231 municipalities in Lleida. Located in the Pyrenees, the Aran Valley is a special comarca with greater autonomy and with Aranese, a variety of Occitan, as its official language. The Aigüestortes i Estany de Sant Maurici National Park is located in this province. The province enjoys a thriving fruit-growing industry, including pears and peac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Catalonia
Catalonia is an autonomous community of Spain, designated as a ''nationalities and regions of Spain, nationality'' by its Statute of Autonomy of Catalonia of 2006, Statute of Autonomy. Most of its territory (except the Val d'Aran) is situated on the northeast of the Iberian Peninsula, to the south of the Pyrenees mountain range. Catalonia is administratively divided into four Provinces of Spain, provinces or eight Vegueries of Catalonia, ''vegueries'' (regions), which are in turn divided into 43 Comarques of Catalonia, ''comarques''. The capital and largest city, Barcelona, is the second-most populous Municipalities in Spain, municipality in Spain and the fifth-most populous List of metropolitan areas in Europe, urban area in the European Union. > > > ''Catalonia'' theoretically derived. During the Middle Ages, Byzantine Empire, Byzantine chroniclers claimed that ''Catalania'' derives from the local medley of Goths with Alans, initially constituting a ''Goth-Alania''. Othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Joan Abella I Creus
Joan Abella i Creus (Sabadell, Barcelona, 1968) is a Catalan gemmologist and mineralogist who discovered abellaite, a mineral that receives this name in his honor. Articles and publications In 2008, he published his first book, "Minerals i Mines de la conca minera de Bellmunt del Priorat", a unique work in the Catalan town of Bellmunt del Priorat, never before described. It consists of three parts: the first is a well-illustrated discussion of the history of mining in the area from the proto-Iberian era to the present. The second part describes most of the important mines, as well as the methods of profit used. The third part is a description of the minerals that have been found there, accompanied by 100 photos of mineral samples from their own collection. He has also collaborated in the publication of several books, such as "Atlas de Asociaciones Minerales en láminas Prima" by Professor Joan Carles Melgarejo, "Minerales de España" by Joaquín Mollfulleda, "Minerales y Minas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Institute Of Earth Sciences Jaume Almera
Geosciences Barcelona (acronym: GEO3BCN), formerly known as Institute of Earth Sciences Jaume Almera (or in Spanish Instituto de Ciencias de la Tierra Jaume Almera, ICTJA) is an earth science public research institute of the Consejo Superior de Investigaciones Científicas ( CSIC). It was created in Barcelona (Spain) in 1965 () and it is considered among the top research institutes in Earth Sciences in Spain. It is also known in Catalan as ''Institut de Ciències de la Terra Jaume Almera'' and was created as the Instituto de Geología de Barcelona. Its former name (before 2020) referred to the Spanish geologist Jaume Almera. GEO3BCN hosts about 30 staff scientists, mounting to 70 when including contracted researchers, and to about 100 including the administration personnel (figures of 2012). Funding comes from the Spanish government, the European Union, and through project contracts with public and private companies. Research is centered primarily on: *Geodynamics and dynamics o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
University Of Barcelona
The University of Barcelona (official name in ; UB), formerly also known as Central University of Barcelona (), is a public research university located in the city of Barcelona, Catalonia, Spain. It was established in 1450. With 76,000 students, it is one of the biggest universities in Spain and has also been ranked 1st in the country in most of the 2024 rankings. It has 106 departments and more than 5,000 full-time researchers, technicians and research assistants, most of whom work in the 243 research groups as recognized and supported by the Government of Catalonia. In 2010, the UB was awarded 175 national research grants and 17 European grants and participated in over 500 joint research projects with the business sector, generating an overall research income of 70 million euros. The work of these groups is overseen by the UB's research centres and institutes which collaborate with leading research institutions and networks in Spain and abroad. The UB is also home to three la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Robert Hazen
Robert Miller Hazen (born November 1, 1948) is an American mineralogist and astrobiologist. He is a research scientist at the Carnegie Institution of Washington's Geophysical Laboratory and Clarence Robinson Professor of Earth Science at George Mason University, in the United States. Hazen is the Executive Director of the Deep Carbon Observatory. Early life Hazen was born in Rockville Centre, New York, on November 1, 1948. His parents were Peggy Hazen (''née'' Dorothy Ellen Chapin; 1918–2002) and Dan Hazen (''né'' Daniel Francis Hazen, Jr.; 1918–2016). He spent his early childhood in Cleveland, near a fossil quarry where he collected his first trilobite at the age of about 9. The Hazen family moved to New Jersey, where Robert's eight-grade teacher, Bill Welsh, observed Robert's interest in his collection of minerals. Hazen later recalled "He gave me a starter collection of 100 specimens, mineral field guides, and mimeographed directions to Paterson and Franklin, New Je ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Catalonia, Spain
Catalonia is an autonomous community of Spain, designated as a ''nationality'' by its Statute of Autonomy. Most of its territory (except the Val d'Aran) is situated on the northeast of the Iberian Peninsula, to the south of the Pyrenees mountain range. Catalonia is administratively divided into four provinces or eight ''vegueries'' (regions), which are in turn divided into 43 ''comarques''. The capital and largest city, Barcelona, is the second-most populous municipality in Spain and the fifth-most populous urban area in the European Union.Demographia: World Urban Areas – Demographia, April 2018 Modern-day Catalonia comprises most of the medieval and early modern |
Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders of Russia, land borders with fourteen countries. Russia is the List of European countries by population, most populous country in Europe and the List of countries and dependencies by population, ninth-most populous country in the world. It is a Urbanization by sovereign state, highly urbanised country, with sixteen of its urban areas having more than 1 million inhabitants. Moscow, the List of metropolitan areas in Europe, most populous metropolitan area in Europe, is the capital and List of cities and towns in Russia by population, largest city of Russia, while Saint Petersburg is its second-largest city and Society and culture in Saint Petersburg, cultural centre. Human settlement on the territory of modern Russia dates back to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
