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occurrence of chromite ore minerals

  • ChromiteThe Full Wiki

    CHROMITE a member of the spinel group of minerals an oxide of chromium and ferrous iron FeCr 2 O 4 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 masses.

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  • Chromite mineral Britannica

    Chromite is commonly found as brittle masses in peridotites serpentines and other basic igneous and metamorphic rocks an unusual occurrence is as a crystalline inclusion in diamond. The earliest worked deposits were those in the serpentine of the Bare Hills near Baltimore Md. U.S.

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  • Stratiform Chromite Deposit ModelUSGS

    plagioclase. Chromite the primary ore mineral occurs in mine waste in minor amounts due to the imperfect grinding of the ore prior to producing a chromite concentrate. The processing of chromite concentrates produces a variety of chromium-bearing solid phases in the chromite ore

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  • 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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  • Extraction of Chromium Metal from Chromite Ore

    Jun 19 2018 · Occurrence and principles of extraction of chromium metal from chromite Ore. Atomic mass 51.99 Valency 0 1 2 3 4 5 6 Atomic number 24 Symbol Cr Position in the periodic table Period

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  • Section 5 Chromite Occurrence Near Charleston Oregon

    The Section 5 Chromite Occurrence is near Charleston Oregon. Historically the site has been associated with the Beach Area which is now part of the Oregon Islands Wilderness. Ore mineralization has been found at this location however the precise grade

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  • Chromite — Wikipedia Republished // WIKI 2

    The only ores of chromium are the minerals chromite and magnesiochromite. Most of the time economic geology names chromite the whole chromite-magnesiochromite series FeCr 2 O 4 (Fe Mg)Cr 2 O 4 (Mg Fe)Cr 2 O 4 and MgCr 2 O 4. The two main products of chromite refining are ferrochromium and metallic chromium for those products the ore smelter process differs considerably.

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  • Chromite and Other Mineral Deposits in Serpentine Rocks Of

    before 1900 but the titanium content troubled furnace operators. Ore bodies are similar in occurrence to chromite deposits they are massive or disseminated and are found near the edges of serpentine intrusive rocks. The small size of the deposits and comparatively

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  • The impact of platinum production from UG2 ore on

    quantities of chromite with typically a chrome-to-iron (Cr/Fe) ratio of 1.35. UG2 ores can contain between 10 and 25 Cr2O3 depending upon the reef width and the selected mining method. It is relatively cheap and easy to extract a portion of the chromite from a platinum concentrator tailings stream at a grade of between 40–42 Cr2O3.

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  • Chromite — Wikipedia Republished // WIKI 2

    The only ores of chromium are the minerals chromite and magnesiochromite. Most of the time economic geology names chromite the whole chromite-magnesiochromite series FeCr 2 O 4 (Fe Mg)Cr 2 O 4 (Mg Fe)Cr 2 O 4 and MgCr 2 O 4. The two main products of chromite refining are ferrochromium and metallic chromium for those products the ore smelter process differs considerably.

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  • Textures of Ore DepositsBu

    Textures of Ore Deposits Importance of studying textures Textural identification and interpretation for ore deposits and associated gangue minerals are tools necessary for understanding the processes involved in the genesis of these deposits which in turn is very important for prospecting for other similar economic bodies.

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  • Occurrence and Characteristics of Chromite Deposits

    The chromite deposits of the eastern Bushveld Complex occur in the Critical Zone a layered pile consisting mainly of pyroxenite norite and anorthosite with minor gabbro dunite and harzburgite. With probable reserves in excess of one billion tons the deposits are among the major mineral resources of

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  • Ore Minerals What are Ore Minerals Geology Page

    An ore is a natural occurrence of rock or sediment which contains enough minerals with economically important elements typically metals that can be extracted from the deposit economically. The ores are extracted by mining for a profit from the earth they are then refined (often by smelting) in

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  • Mode of Occurrence of OrebodiesAngelfire

    Mode of Occurrence of OrebodiesMorphology and Relationship with Host Rocks . Mode of occurrence of an ore deposit is important from the mining point of view. Sedimentary ore deposits are roughly tabular most others occur in a variety of forms.

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  • Magnetite Mineral PhysicalOptical Properties

    Magnetite is rock mineral and one of the most important iron ore minerals with chemical formula is iron(II III) oxide Fe2 Fe3 2O4 also as the name magnetic minerals to attracted to a magnet. It is the most magnetic natural occuring minerals in the World. Small grains of magnetite occur in almost all igneous and metamorphic rocks.

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  • ChromiteMGT MINERAL

    Chromite. A mineral deposit is defined as a mineral occurrence of sufficient size and grade that might under the most favorable circumstances be considered to have economic potential. Deposits sharing a relatively wide variety and large number of attributes are characterized as a "type " and a model representing that type can be developed.

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  • Ore Minerals What are Ore Minerals Geology Page

    Ore Minerals. Image Credits bonchan/shutterstock Ore Minerals. An ore is a natural occurrence of rock or sediment which contains enough minerals with economically important elements typically metals that can be extracted from the deposit economically.

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  • CLU-IN Contaminants > Chromium VI > Environmental Occurrence

    This report summarizes the characteristics of chromite ore processing residue (COPR) in terms of chemical composition phases and results from a melting study to convert to iron with chromium or steel. Chromate (hexavalent chromium or Cr VI ) was produced during the chromate extraction process when Cr(III) in chromite ore was oxidized to Cr(VI).

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  • ORE MINERALOGYEOLSS

    Keywords ore minerals ore deposits elements sulfides oxides Introduction to Ore Mineralogy An ore is a naturally occurring rock or material composed of a mineral or minerals of The dark gray inclusions in chromite are olivine and orthopyroxe. The interstitial space between the chromites is

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  • Ore Minerals What are Ore Minerals Geology Page

    An ore is a natural occurrence of rock or sediment which contains enough minerals with economically important elements typically metals that can be extracted from the deposit economically. The ores are extracted by mining for a profit from the earth they are then refined (often by smelting) in

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  • Chromite and other mineral deposits in serpentine rocks of

    Small deposits of titaniferous iron ore in serpentine were mined for iron before 1900 but the titanium content troubled furnace operators. Ore bodies are similar in occurrence to chromite deposits they are massive or disseminated and are found near the edges of serpentine intrusive rocks.

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  • Chromium Occurrence principles of extraction Properties

    Occurrence . Metallic chromium does not occur in the native state. In India chromite ore occurs in Bihar Mysore Chennai and Bombay. Ores . The important ore of chromium is Chromite or chrome ore FeO Cr 2 O 3 . The chief ore of chromium is chromite ore. Extraction of chromium metal from chromite ore

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  • Chromitean overview ScienceDirect Topics

    Chromite demand in Turkey is mostly met by metallurgic-type ores. Chromite ore is one of Turkey s major income sources in primary mineral exports. Ferrochrome production of Turkey was different between 2007 and 2011 at 69.73–60.00 metric tons.

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  • ChromiteYouTube

    Oct 26 2015 · Chromite is an iron chromium oxide FeCr2O4. It is an oxide mineral belonging to the spinel group. Magnesium can substitute for iron in variable amounts as it forms a solid solution with

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  • Hematite A primary ore of iron and a pigment mineral

    What is Hematite Hematite is one of the most abundant minerals on Earth s surface and in the shallow crust. It is an iron oxide with a chemical composition of Fe 2 O 3 is a common rock-forming mineral found in sedimentary metamorphic and igneous rocks at locations throughout the world.. Hematite is the most important ore of iron.Although it was once mined at thousands of locations around

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  • Occurrence and mineral chemistry of chromite and related

    Oct 27 2016 · Chromite as accessory mineral from the complex is divided into three types based on its occurrence and morphology. Quantitative electron probe microanalysis (EPMA) have been conducted on the different types of chromites. Type 1 chromite occurs as inclusions within silicate minerals and has relatively homogeneous composition.

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  • Magnetite Mineral PhysicalOptical Properties

    Magnetite is rock mineral and one of the most important iron ore minerals with chemical formula is iron(II III) oxide Fe2 Fe3 2O4 also as the name magnetic minerals to attracted to a magnet. It is the most magnetic natural occuring minerals in the World. Small grains of magnetite occur in almost all igneous and metamorphic rocks.

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  • Chromiteenergymining.sa.gov

    Chromite a brownish black cubic mineral belonging to the spinel group is the only ore mineral from which metallic chromium and chromium compounds are obtained. It has the chemical formula FeCr 2 O 4 and a theoretical composition of 32.0 FeO and 68.0 Cr 2 O 3. In its natural form it occurs in solid solution with other minerals in the spinel

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  • Mineral Deposits Flashcards Quizlet

    Start studying Mineral Deposits. Learn vocabulary terms and more with flashcards games and other study tools. Search. mineral occurrence of sufficient size and grade or concentration to enable extraction under the most favorable conditions. residual ore deposits derived from the laterization of olivine-rich ultramafic rocks.

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  • ChromiteWikipedia

    Chromite ore can be mined to produce chromite concentrate. It can also be crushed and processed. Chromite concentrate when combined with a reductant such as coal or coke and a high temperature furnace can produce ferrochrome. Ferrochrome is a type of ferroalloy that is an alloy in between chromium and iron.

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  • Occurrence and Characteristics of Chromite Deposits

    The chromite deposits of the eastern Bushveld Complex occur in the Critical Zone a layered pile consisting mainly of pyroxenite norite and anorthosite with minor gabbro dunite and harzburgite. With probable reserves in excess of one billion tons the deposits are among the major mineral resources of

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  • Magnesiochromite Mineral information data and localities.

    Magnesiochomite is about twice as common as chromite. Much of the mineral referred to as "chromite" in geological and petrological papers and mining statistics is magnesiochromite. The Fe-dominant species chromite may be subordinate to magnesiochromite in many "chromite" deposits chromitites and other "chromite"-bearing rocks.

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  • Semiconducting Ore Minerals1st Edition

    Developments in Economic Geology 4 Semiconducting Ore Minerals provides a comprehensive discussion of the semiconductor physics of ore minerals which is a specialized field that is interdisciplinary to materials science and earth science. The book is organized into four parts.

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  • Classification of Mineral Deposits Mining Geology

    Apr 25 2015 · Mineral deposits like iron ore bauxite chromite copper limestone and magnesite are exposed to the surface and easy to explore. Although most of the significant exposed ore deposits namely Example Outside the Sterling Hill Mine are exposures of the weathered surface of the zinc ore body in the Passaic Pit. Calamine (zinc silicate) was mined in this oxidized portion of the ore

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  • Chromitean overview ScienceDirect Topics

    Chromite demand in Turkey is mostly met by metallurgic-type ores. Chromite ore is one of Turkey s major income sources in primary mineral exports. Ferrochrome production of Turkey was different between 2007 and 2011 at 69.73–60.00 metric tons.

    Get Price
  • Zimbabwe s Mineral Potential Ministry of Mines and

    Zimbabwe has a huge and highly diversified mineral resource base dominated by two prominent geological features namely the famous Great Dyke and the ancient Greenstone Belts also known as Gold Belts.The Great Dyke is a layered igneous complex extending north-south for about 550 km. The Great Dyke plays host to the world s largest high grade chromite resource base.

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