chromite mineral encyclopedia

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Chromite | Encyclopedia
Chromite | Encyclopedia

chromite (krō´mīt), dark brown to black mineralIt is an iron-chromium oxide, FeCr 2 O 4, with traces of magnesium and aluminumIts crystals are octahedral, but rare; it usually occurs as irregular, granular masses in association with igneous rocks, including ophiolites, which are segments of oceanic crust exposed on land by tectonic processes usually associated with plate convergence (see ....

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Serpentine (Mineral) - Encyclopedia - theodora
Serpentine (Mineral) - Encyclopedia - theodora

Serpentine (Mineral) - Encyclopedia GEOGRAPHICAL NAMES: SERPENTINE, a mineral which, in a massive and impure form, occurs on a large scale as a rock, and being commonly of variegated colour, is often cut and polished, like marble, for use as a decorative stone It is generally held that the name was suggested by the fancied resemblance of the ....

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chromite mining - gezondheid-bijverdienennl
chromite mining - gezondheid-bijverdienennl

Chromite mining The Oregon Encyclopedia Chromite mining PDF Chromite is a mineral that contains chromium It is considered a strategic mineral, which generally means that it is necessary for military and industrial use during periods of national emergency...

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Mining - Madagascar - export, growth, system ,
Mining - Madagascar - export, growth, system ,

Chromite and petroleum products were top export commodities in 2002, and the production of cement and petroleum were leading industri In 2000, output of chromite (marketable lumpy ore and gross weight concentrate) was 118,800 tons; none was produced in 1999, and the country had resources of 388 million tons...

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Chromium | Encyclopedia
Chromium | Encyclopedia

Chromium is a comparatively rare element, never occurring by itself in nature but always in compounds Its chief source is the mineral chromite, which is composed of iron, chromium, and oxygen and is found principally in the nations of the former Soviet Union, South Africa, Zimbabwe, Turkey, and the Philippin The element, in the form of ....

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CHROMITE – Encyclopaedia Iranica
CHROMITE – Encyclopaedia Iranica

Oct 18, 2011· CHROMITE, FeCr 2 O 4, a dark-brown or black mineral from which chromium is refinedIt may be found in conjunction with deposits of nickel, gold, and platinum There is no available documentary evidence that chromite was extracted or exploited in ancient Persia; it was probably not used in metalworking because of its high melting point (2,300-2,600° F), compared with those of ,...

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ore mineral of chromite in brazil - wiesjegeringsnl
ore mineral of chromite in brazil - wiesjegeringsnl

Chromite: Mineral information, data and localiti Chromite is the most important chromium ore mineral It forms a complete solid solution series with many other members of the group, eg in the Chromite-Hercynite Series, Chromite-Spinel Series, Chromite-Magnetite Series and the Chromite-Magnesiochromite SeriIt is the iron analogue of Zincochromite, Cochromite, Manganochromite and ....

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How To Extract Chromium From Chromite Ore– Rock Crusher ,
How To Extract Chromium From Chromite Ore– Rock Crusher ,

How To Extract Chromium From Chromite Ore , chromite (mineral) -- Britannica Online Encyclopedia relatively hard, metallic, black oxide mineral of chromium and iron (FeCr 2 O 4) that is the chief commercial source of chromium , Get information, facts, and pictures about chromium at Encyclopedia Make research projects and school ....

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Chromite | Definition of Chromite by Merriam-Webster
Chromite | Definition of Chromite by Merriam-Webster

Chromite definition is - a black mineral that consists of an oxide of iron and chromium and is the only chromium ore , Britannica: Encyclopedia article about chromite Comments on chromite What made you want to look up chromite? Please tell us where you read or heard it ,...

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Chromite | Article about chromite by The Free Dictionary
Chromite | Article about chromite by The Free Dictionary

chromite (krō`mīt), dark brown to black mineralIt is an iron-chromium oxide, FeCr 2 O 4, with traces of magnesium and aluminumIts crystals are octahedral, but rare; it usually occurs as irregular, granular masses in association with igneous rocks, including ophiolites, which are segments of oceanic crust exposed on land by tectonic processes usually associated with plate convergence (see ....

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Chromite | mineral | Britannica
Chromite | mineral | Britannica

Chromite, relatively hard, metallic, black oxide mineral of chromium and iron (FeCr2O4) that is the chief commercial source of chromium It is the principal member of the spinel series of chromium oxides; the other naturally occurring member is magnesiochromite, oxide of magnesium and chromium...

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Chromite - Encyclopedia - theodora
Chromite - Encyclopedia - theodora

CHROMITE, a member of the spinel group of minerals; an oxide of chromium and ferrous iron, FeCr 2 O 4 It is also known as chromic iron or as chrome-iron-ore, and is the chief commercial source of chromium and its compounds It crystallizes in regular octahedra, but is usually found as grains or as granular to compact mass...

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chromite and chromite mining - warilaborg
chromite and chromite mining - warilaborg

Chromite mining The Oregon Encyclopedia Mar 17, 2018 , Chromite is a mineral that contains chromium It is considered a strategic mineral, which generally means that it is necessary for military and, Chromite: The only mineral ore of chromium metal Geology Chromite is the only ore of chromium, a metal essential for making stainless steel...

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Chromite mining - The Oregon Encyclopedia
Chromite mining - The Oregon Encyclopedia

In 2012, the Oregon Resources Corporation ceased chromite mining operations due to the falling prices of chromite on international markets In 2016 the ORC notified the Oregon Department of Geology and Mineral Industries that the chromite mining property and assets were for sale...

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Chromite Mineral Information and Facts - Chrome Ore
Chromite Mineral Information and Facts - Chrome Ore

The annual production of chromite in the world is large, as it is an important industrial mineral Major producers currently include South Africa, Turkey and India It is found at many locations but only sparingly in the United Stat...

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Mineral - New World Encyclopedia
Mineral - New World Encyclopedia

Mineral definition and classification A mineral is defined as a naturally occurring, inorganic solid with a definite chemical composition and crystalline structure Most minerals are formed through geochemical processes, but some (carbonates and phosphates) are produced by biological systems...

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chromite mining in south africa - greenrevolutionorgin
chromite mining in south africa - greenrevolutionorgin

Chromite: The only mineral ore of chromium metal However, chromite deposits that are large enough for mining are generally found in: 1) stratiform deposits (large masses of igneous rock such as norite orMost of the world's known chromite occurs in two stratiform deposits: the Bushveld Complex in South Africa and the Great Dyke in Zimbabwe ....

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Characteristics of Mineral Deposits - Encyclopedia of Life ,
Characteristics of Mineral Deposits - Encyclopedia of Life ,

GEOLOGY – Vol IV – Characteristics of Mineral Deposits - Maria Boni ©Encyclopedia of Life Support Systems (EOLSS) CHARACTERISTICS OF MINERAL DEPOSITS Maria Boni University of Naples “Federico II”, Italy Keywords: mineral deposits, diamonds, chromite, base metals, gold, iron, manganese, industrial minerals Contents 1 Introduction 2...

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chromium (Cr) - David Darling
chromium (Cr) - David Darling

chromite Chromite is a hard black spinel mineral, an iron (II) chromium (III) mixed oxide (FeOCr 2 O 3); it is the only important ore of chromium (see Figure 3) Chromite separates from magma when igneous rocks first form, occurring as octahedral crystals and as granular mass It ,...

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chromite ore mining zimbabwe
chromite ore mining zimbabwe

Chromite - Wikipedia, the free encyclopedia Chromite is an iron chromium oxide: FeCr2O4 It is an oxide mineral belonging to the spinel group Magnesium can substitute for ,...

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CHROMITE – Encyclopaedia Iranica
CHROMITE – Encyclopaedia Iranica

CHROMITE, FeCr 2 O 4, a dark-brown or black mineral from which chromium is refinedIt may be found in conjunction with deposits of nickel, gold, and platinum There is no available documentary evidence that chromite was extracted or exploited in ancient Persia; it was probably not used in metalworking because of its high melting point (2,300-2,600° F), compared with those of copper and lead...

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Chromite: The mineral Chromite information and pictures
Chromite: The mineral Chromite information and pictures

Chromite, the principle ore of the element chromium, is a commercially valuable mineral However, due to mining restrictions and the fact that Chromite is not commonly found in crystallized form, it is not well-represented in mineral collections...

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process of chromium prodution from chromite - ypma-ictnl
process of chromium prodution from chromite - ypma-ictnl

chromite mineral process - cleanroominstrumentsin process of chromium prodution from chromite Chromite Wikipedia the free encyclopedia It is an industrially important mineral for the production of metallic chromium used chromium for those products get more info Some studies on recovery of chromium from chromite ore ....

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chromite | Infoplease
chromite | Infoplease

chromite krō´mīt [], dark brown to black mineralIt is an iron-chromium oxide, FeCr 2 O 4, with traces of magnesium and aluminumIts crystals are octahedral, but rare; it usually occurs as irregular, granular masses in association with igneous rocks, including ophiolites, which are segments of oceanic crust exposed on land by tectonic processes usually associated with plate convergence (see ....

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CHROMITE–PLATINUM-GROUP ELEMENT MAGMATIC ,
CHROMITE–PLATINUM-GROUP ELEMENT MAGMATIC ,

UNESCO – EOLSS SAMPLE CHAPTERS GEOLOGY – Vol IV – Chromite-Platinum-Group Element Magmatic Deposits - Giorgio Garuti ©Encyclopedia of Life Support Systems (EOLSS) electroplanting, and pharmaceutics About 7% of chromite ore production goes to the refractory industry...

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Mindatorg - Mines, Minerals and More
Mindatorg - Mines, Minerals and More

Welcome Mindatorg is the world's largest open database of minerals, rocks, meteorites and the localities they come from Mindatorg is run by the not-for-profit Hudson Institute of Mineralogy...

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world war chromite mining - exceptionalservicepersonnelcoza
world war chromite mining - exceptionalservicepersonnelcoza

chromium ore mining pro Chromite mining - The Oregon Encyclopedia Chromite is a mineral that contains chromium It is considered a strategic mineral, which generally means that it is necessary for military and industrial use during periods of national emergency...

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Chromite — Wikipedia Republished // WIKI 2
Chromite — Wikipedia Republished // WIKI 2

Chromite contains Mg, ferric iron [Fe(III)], Al and trace amounts of Ti Chromite can change into different minerals based on the amounts of each element in the mineral Chromite is a part of the spinel group, which means that it is able to form a complete solid solution series with other members in...

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Spinel - New World Encyclopedia
Spinel - New World Encyclopedia

The spinels are an important group of oxide minerals with similar crystalline structur Their general chemical formula may be written as (X)(Y) 2 O 4, in which X and Y represent cations of various metalsThey are named after the representative mineral spinel, which corresponds to magnesium aluminum oxide (MgAl 2 O 4)...

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Chromite (mineral) - Image | Britannica
Chromite (mineral) - Image | Britannica

Chromite, relatively hard, metallic, black oxide mineral of chromium and iron (FeCr2O4) that is the chief commercial source of chromium It is the principal member of the spinel series of chromium oxides; the other naturally occurring member is magnesiochromite, oxide of magnesium and chromium...

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