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Kaňkite
Kankite is a mineral with the chemical formula Fe3+ As O4·3.5( H2O). Kankite is named for the locality that yielded first specimens Kaňk, Czech Republic. Kankite forms in old (1200- to 1400-year-old) mine dumps. It is yellowish-green on fresh exposure, with a paler greenish yellow on exposure to air. Properties Kankite is a monoclinic mineral, meaning it is a mineral system having 3 unequal axes of which one is at right angles with the other two. It has an uneven fracture and has a hardness of 2–3 (gypsum–calcite). It is translucent yellowish green in color with a grayish-yellow streak. Its luster is dull to vitreous. Kankite contains the elements arsenic, iron, hydrogen and oxygen. Frost, Ray L. and Cejka, Jin and Keeffe, Eloise C. and Sejkora, Jiri (2009)''Raman Spectroscopic study of the mixed anion sulphate-arsenate mineral pamnauite''Journal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsenate Mineral
Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO4)3− anion group and, more rarely, other arsenates with anions like AsO3(OH)2− (also written HAsO42−) (example: pharmacolite Ca(AsO3OH).2H2O) or (very rarely) sO2(OH)2sup>− (example: andyrobertsite). Arsenite minerals are much less common. Both the Dana and the Strunz mineral classifications place the arsenates in with the phosphate minerals. Example arsenate minerals include: *Annabergite Ni3(AsO4)2·8H2O * Austinite CaZn(AsO4)(OH) * Clinoclase Cu3(AsO4)(OH)3 * Conichalcite CaCu(AsO4)(OH) *Cornubite Cu5(AsO4)2(OH)4 * Cornwallite Cu2+5(AsO4)2(OH)2 * Erythrite Co3(AsO4)2·8H2O * Mimetite Pb5(AsO4)3Cl * Olivenite Cu2(AsO4)OH Nickel–Strunz Classification -08- Phosphates IMA-CNMNC proposes a new hierarchical scheme (Mills et al., 2009). This list uses it to modify the Classification of Nickel–Strunz (mindat.org, 10 ed, pending publication). *Abbreviations: **"*" - discred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrite
The mineral pyrite (), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Fe S2 (iron (II) disulfide). Pyrite is the most abundant sulfide mineral. Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of ''fool's gold''. The color has also led to the nicknames ''brass'', ''brazzle'', and ''Brazil'', primarily used to refer to pyrite found in coal. The name ''pyrite'' is derived from the Greek (), 'stone or mineral which strikes fire', in turn from (), 'fire'. In ancient Roman times, this name was applied to several types of stone that would create sparks when struck against steel; Pliny the Elder described one of them as being brassy, almost certainly a reference to what we now call pyrite. By Georgius Agricola's time, , the term had become a generic term for all of the sulfide minerals. Pyrite is usually found associated with other sulfides or oxides in quartz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornwall
Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic Ocean, to the south by the English Channel, and to the east by the county of Devon, with the River Tamar forming the border between them. Cornwall forms the westernmost part of the South West Peninsula of the island of Great Britain. The southwesternmost point is Land's End and the southernmost Lizard Point. Cornwall has a population of and an area of . The county has been administered since 2009 by the unitary authority, Cornwall Council. The ceremonial county of Cornwall also includes the Isles of Scilly, which are administered separately. The administrative centre of Cornwall is Truro, its only city. Cornwall was formerly a Brythonic kingdom and subsequently a royal duchy. It is the cultural and ethnic origin of the Cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devon
Devon ( , historically known as Devonshire , ) is a ceremonial and non-metropolitan county in South West England. The most populous settlement in Devon is the city of Plymouth, followed by Devon's county town, the city of Exeter. Devon is a coastal county with cliffs and sandy beaches. Home to the largest open space in southern England, Dartmoor (), the county is predominately rural and has a relatively low population density for an English county. The county is bordered by Somerset to the north east, Dorset to the east, and Cornwall to the west. The county is split into the non-metropolitan districts of East Devon, Mid Devon, North Devon, South Hams, Teignbridge, Torridge, West Devon, Exeter, and the unitary authority areas of Plymouth, and Torbay. Combined as a ceremonial county, Devon's area is and its population is about 1.2 million. Devon derives its name from Dumnonia (the shift from ''m'' to ''v'' is a typical Celtic consonant shift). During ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buckfastleigh
Buckfastleigh is a market town and civil parishes in England, civil parish in Devon, England situated beside the Devon Expressway (A38 road, A38) at the edge of the Dartmoor National Park. It is part of Teignbridge and, for ecclesiastical purposes, lies within the Totnes Deanery. It is 18 miles (29 km) east-northeast of Plymouth, 20 miles (32 km) southwest of Exeter and has a population of 3,661. It is a centre of tourism and is home to Buckfast Abbey, the South Devon Railway Trust, South Devon Railway, the Buckfastleigh Butterfly Farm and Otter Sanctuary, the Tomb of Squire Richard Cabell and The Valiant Soldier. With 13 letters, Buckfastleigh is one of the longest place names in England with no repeated letters, tied with Buslingthorpe, Leeds and Buslingthorpe, Lincolnshire, but exceeded by Bricklehampton in Worcestershire with 14 letters. Geography Geographically, Buckfastleigh straddles the confluence of two small streams from Dartmoor which feed into the River Dart just to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Forest
The Black Forest (german: Schwarzwald ) is a large forested mountain range in the state of Baden-Württemberg in southwest Germany, bounded by the Rhine Valley to the west and south and close to the borders with France and Switzerland. It is the source of the Danube and Neckar rivers. Its highest peak is the Feldberg with an elevation of above sea level. Roughly oblong in shape, with a length of and breadth of up to , it has an area of about 6,009 km2 (2,320 sq mi). Historically, the area was known for forestry and the mining of ore deposits, but tourism has now become the primary industry, accounting for around 300,000 jobs. There are several ruined military fortifications dating back to the 17th century. History In ancient times, the Black Forest was known as , after the Celtic deity, Abnoba. In Roman times ( Late antiquity), it was given the name ("Marcynian Forest", from the Germanic word ''marka'' = "border"). The Black Forest probably represented the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menzenschwand
Menzenschwand ( Alemannic: ''Menzèschwand'') is a climatic health spa in the Black Forest in Germany. The village lies within the borough of St. Blasien in the state of Baden-Württemberg. Geography Menzenschwand comprises three villages, ''Vorderdorf'' ("front village"), ''Mitteldorf'' ("middle village") and ''Hinterdorf'' ("rear village"), has a population of just under 550 inhabitants and belongs to the borough of St. Blasien. It lies in the valley of Menzenschwander Alb which runs south from the 1,493-metre-high Feldberg. The valley joins the westward-running valley of the Bernauer Alb above St. Blasien. In the valley to the east lies the lake of Schluchsee. The valley landscape of Menzenschwand is shaped by the glacial streams of the Feldberg Glacier from several ice ages. The main glacier, which was up to 300 metres thick, carved out trough-shaped valley of the Krunkelbach that starts at the large cwm west of the Herzogenhorn. The Alb valley to the south joins t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saxony
Saxony (german: Sachsen ; Upper Saxon: ''Saggsn''; hsb, Sakska), officially the Free State of Saxony (german: Freistaat Sachsen, links=no ; Upper Saxon: ''Freischdaad Saggsn''; hsb, Swobodny stat Sakska, links=no), is a landlocked state of Germany, bordering the states of Brandenburg, Saxony-Anhalt, Thuringia, Bavaria, as well as the countries of Poland and the Czech Republic. Its capital is Dresden, and its largest city is Leipzig. Saxony is the tenth largest of Germany's sixteen states, with an area of , and the sixth most populous, with more than 4 million inhabitants. The term Saxony has been in use for more than a millennium. It was used for the medieval Duchy of Saxony, the Electorate of Saxony of the Holy Roman Empire, the Kingdom of Saxony, and twice for a republic. The first Free State of Saxony was established in 1918 as a constituent state of the Weimar Republic. After World War II, it was under Soviet occupation before it became part of the communist East ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brand-Erbisdorf
Brand-Erbisdorf () is a small town in the district of Mittelsachsen, in Saxony, Germany. It is situated 5 km south of Freiberg. As of 2020, the town has a population of 9,145. History The town is first mentioned in 1209 as ''Erlwinesberc'', although it is suggested that it was founded earlier, in the middle of the 12th century. The long tradition of silver mining Silver mining is the extraction of silver from minerals, starting with mining. Because silver is often found in intimate combination with other metals, its extraction requires elaborate technologies. In 2008, ca.25,900 metric tons were consumed ... around the town came to an end in the beginning of the 20th century. It was only after 1945 that the mining industry reappeared to a limited extent, before finally closing in 1968. From 1900 onwards, various other industries began to take hold in the town, slowly replacing mining as the primary industry. Of these were most notably the wood industry originating fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meissen
Meissen (in German orthography: ''Meißen'', ) is a town of approximately 30,000 about northwest of Dresden on both banks of the Elbe river in the Free State of Saxony, in eastern Germany. Meissen is the home of Meissen porcelain, the Albrechtsburg castle, the Gothic Meissen Cathedral and the Meissen Frauenkirche. The ''Große Kreisstadt'' is the capital of the Meissen district. Names * german: Meißen * french: Meissen, ou, selon l'orthographe allemande: ''Meißen''; en français suranné: ''Misnie'' * la, Misnia, Misena, Misnensium * pl, Miśnia * cs, Míšeň * hsb, Mišno * dsb, Mišnjo * zh, 迈森 (pinyin: ) History Meissen is sometimes known as the "cradle of Saxony". It grew out of the early West Slavic settlement of ''Misni'' inhabited by Glomatians and was founded as a German town by King Henry the Fowler in 929. In 968, the Diocese of Meissen was founded, and Meissen became the episcopal see of a bishop. The Catholic bishopric was suppressed in 1581 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia. Quartz is the mineral definin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
