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Zavaritskite
Zavaritskite is a rare mineral of the halide class, bismuth oxyhalide with the chemical formula (BiO)F. It is named after the Soviet geologist and petrographer, academician of the USSR Academy of Sciences Alexander Nikolaevich Zavaritsky. It was discovered in 1962 by Soviet scientists. Zavaritskite is part of matlockite group of minerals. Description Zavaritskite is a gray mineral with a greasy or semi-metallic luster; opaque, only slightly translucent in very small grains. The mineral powder is finely dispersed, colorless. The crystallization process of zavaritskite occurs in a square system, due to which the mineral forms sufficiently fine-grained powder cryptocrystalline aggregates. The mineral is usually found together with bismuth, topaz, fluorite and others in the oxidized zone of the Sherlovogorsky deposit in Transbaikal. Zavaritskite was first described in 1962 by Soviet scientists E. I. Dolomanova, V. M. Senderova, and M. T. Yanchenko. It is one of the oxidation products ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halide Mineral
Halide minerals are those minerals with a dominant halide anion (, , and ). Complex halide minerals may also have polyatomic anions. Examples include the following: * Atacamite *Avogadrite (K,Cs)BF *Bararite (β) *Bischofite * Brüggenite * Calomel * Carnallite * Carnallite *Cerargyrite/ Horn silver AgCl * Chlorargyrite AgCl, bromargyrite AgBr, and iodargyrite AgI * Cryolite * Cryptohalite (a) . * Dietzeite * Eglestonite * Embolite AgCl+AgBr * [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paragenesis
Paragenesis is a petrologic concept meaning an ''equilibrium sequence of mineral phases''. It is used in studies of igneous and metamorphic rock genesis and importantly in studies of the hydrothermal deposition of ore minerals and the rock alteration (vein metasomatism) associated with ore mineral deposits. The concept and application of paragenesis, from the Greek for ''born beside'', was first applied by August Breithaupt in 1849 in his work ''Die Paragenesis der Mineralien''. The paragenetic sequence in mineral formation is an important concept in deciphering the detailed geologic history of ore deposits and metamorphic events. The sequence is worked out through detailed microscopic studies in polished ore mineral section, petrologic thin section and fluid inclusion image:Inclumed.gif, 250px, Trapped in a time capsule the same size as the diameter of a human hair, the ore-forming liquid in this inclusion was so hot and contained so much dissolved solids that when it cooled, cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Ploskaya
Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, Cornwall, England * Mounts, Indiana, a community in Gibson County, Indiana, United States People * Mount (surname) * William L. Mounts (1862–1929), American lawyer and politician Computing and software * Mount (computing), the process of making a file system accessible * Mount (Unix), the utility in Unix-like operating systems which mounts file systems Displays and equipment * Mount, a fixed point for attaching equipment, such as a hardpoint on an airframe * Mounting board, in picture framing * Mount, a hanging scroll for mounting paintings * Mount, to display an item on a heavy backing such as foamcore, e.g.: ** To pin a biological specimen, on a heavy backing in a stretched stable position for ease of dissection or display ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Republic Of Karelia
The Republic of Karelia (russian: Респу́блика Каре́лия, Respublika Kareliya; ; krl, Karjalan tašavalta; ; fi, Karjalan tasavalta; vep, Karjalan Tazovaldkund, Ludic: ''Kard’alan tazavald''), also known as just Karelia (russian: Каре́лия, Ка́рьяла; krl, Karjala), is a republic of Russia situated in Northwest Russia. The republic is a part of the Northwestern Federal District, and covers an area of , with a population of 603,067 residents. Its capital is Petrozavodsk. The modern Karelian Republic was founded as an autonomous republic within the Russian SFSR by the Resolution of the Presidium of the All-Russian Central Executive Committee (VTsIK) on 27 June 1923 and by the Decree of the VTsIK and the Council of People's Commissars of 25 July 1923, from the Karelian Labour Commune. From 1940 to 1956, it was known as the Karelo-Finnish Soviet Socialist Republic, one of the union republics in the Soviet Union. In 1956, it was once again ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pitkyaranta
Pitkyaranta (russian: Питкяранта; olo, Pitkyrandu; fi, Pitkäranta) is a town and the administrative center of Pitkyarantsky District of the Republic of Karelia, Russia, located on the northeastern coast of Lake Ladoga. Population: History Originally a part of Finland, Pitkäranta was part of the municipality of Impilahti. Pitkäranta was the largest settlement center in Impilahti, with about 2,000 inhabitants in the late 1930s. Pitkäranta was also the center of Salmi Parish. The Pitkäranta Orthodox parish comprised the eastern part of Impilahti municipality and the Uuksu area of Salmi. Pitkäranta also formed a prayer room under the Impilahti Lutheran Congregation. There was also a secondary school in Pitkäranta. Pitkäranta was, above all, a major industrial location. The most important industries were the mining and forestry industries. Mining in Pitkäranta began as early as the 18th century and its heyday was in the 19th century. The Pitkäranta mines produce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magadan Oblast
Magadan Oblast ( rus, Магаданская область, r=Magadanskaya oblast, p=məgɐˈdanskəjə ˈobləsʲtʲ) is a federal subject (an oblast) of Russia. It is geographically located in the Far East region of the country, and is administratively part of the Far Eastern Federal District. Magadan Oblast has a population of 156,996 ( 2010 Census), making it the least populated oblast and the third-least populated federal subject in Russia. Magadan is the largest city and the capital of Magadan Oblast. The majority of the Oblast's inhabitants live in the city. The coastline has a less severe climate than the interiors, although both are very cold for its latitude. It borders Chukotka Autonomous Okrug in the north, Kamchatka Krai in the east, Khabarovsk Krai in the south and the Sakha Republic in the west. The economy is primarily based on mining, particularly gold, silver and other non-ferrous metals. History Magadan Oblast was established on December 3, 1953D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omsukchan
Omsukchan (russian: Омсукча́н) is an urban locality (an urban-type settlement) and the administrative center of Omsukchansky District of Magadan Oblast, Russia, located north of Magadan. Population: History Omsukchan was founded in the 1930s after natural resources were discovered in the region. It was granted urban-type settlement status in 1953. The settlement's name comes from ''Omchikan'', which means "little marsh" in the Even language. Geography Omsukchan is a mountain town that lies in the western shore of Sugoy River, a tributary of Kolyma River. It is 27 km east of Dukat, the other town in the raion, and 22 km north of the ghost town of Galimy. The Omsukchan Range, highest ridge of the Kolyma Mountains, rises to the west and northwest of the town. Demographics Colors= id:lightgrey value:gray(0.9) id:darkgrey value:gray(0.7) id:sfondo value:rgb(1,1,1) id:barra value:rgb(0.6,0.7,0.8) ImageSize = width:520 height:400 PlotArea = left:50 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tungsten
Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isolated as a metal in 1783. Its important ores include scheelite and wolframite, the latter lending the element its alternate name. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all known elements barring carbon (which sublimes at normal pressure), melting at . It also has the highest boiling point, at . Its density is , comparable with that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work. However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw. Tungsten o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pluton
In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and compositions, illustrated by examples like the Palisades Sill of New York and New Jersey; the Henry Mountains of Utah; the Bushveld Igneous Complex of South Africa; Shiprock in New Mexico; the Ardnamurchan intrusion in Scotland; and the Sierra Nevada Batholith of California. Because the solid country rock into which magma intrudes is an excellent insulator, cooling of the magma is extremely slow, and intrusive igneous rock is coarse-grained ( phaneritic). Intrusive igneous rocks are classified separately from extrusive igneous rocks, generally on the basis of their mineral content. The relative amounts of quartz, alkali feldspar, plagioclase, and feldspathoid is particularly important in classifying intrusive igneous rocks. Intrusio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granite
Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or '' granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) contain almost no dark minerals. Granite is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greisen
Greisen is a highly altered granitic rock or pegmatite, usually composed predominantly of quartz and micas (mostly muscovite). Greisen is formed by self-generated alteration of a granite and is a class of moderate- to high-temperature magmatic-hydrothermal alteration related to the late-stage release of volatiles dissolved in a magma during the solidification of that magma. Greisens are usually variably altered rocks, grading from coarse, crystalline granite, commonly vuggy with miarolitic cavities, through to quartz and muscovite rich rocks, which may be locally rich in topaz, tourmaline, cassiterite, fluorite, beryl, wolframite, siderite, molybdenite and other sulfide minerals, and other accessory minerals. They may occur as small to large veins, or large zones in the roof of some granites. The rocks can sometimes be mined as ores of tin and other minerals. Petrogenesis Greisens are formed by endogenous alteration of granite during the cooling stages of emplacement. Greisen f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siderophyllite
Siderophyllite is a rare member of the mica group of silicate minerals with formula KFe2+2Al(Al2Si2)O10(F,OH)2. The mineral occurs in nepheline syenite pegmatites and granite and aplite greisens. It is associated with microcline and astrophyllite at Pikes Peak, Colorado. It is also found in the alkali pegmatites of Mont Saint-Hilaire, Quebec. It was first described in 1880 for an occurrence near Pikes Peak, Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes .... The name derives from the Greek ''sideros'', iron, and ''phyllon'', leaf, in reference to its iron rich composition and perfect basal cleavage. References Phyllosilicates Monoclinic minerals Minerals in space group 12 {{silicate-mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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