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importance of chromite rock

A group of unusual minerals, among them kammererite, are typical associates of high-grade massive chromite but are rare in lower grade deposits. Chromite was first discovered in the United States at Bare Hills, Md., around 1810. Between 1820 and 1850, additional deposits were discovered and mined in Maryland and Pennsylvania, including the

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  • Chromite mining - The Oregon Encyclopedia
    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. The strategic mineral concept was created during World War I and became law just prior to World War II with the passage of the Strategic Minerals Act

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  • What is Chromite Used For? Occurrence and Uses of Chromite
    What is Chromite Used For? Occurrence and Uses of Chromite

    Feb 10, 2021 Chromite; is the only important ore of chromium, although this element appears in many other minerals. Chromite is essentially an oxide of iron, magnesium, chromium, and aluminum, and is a member of the spinel group of minerals. It is observed in compact masses or as grains disseminated in rock

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  • Chromite
    Chromite

    May 08, 2018 chromite. chromite Member of the chromite group of minerals in the spinel group, Fe 2+ Cr 2 O 4, along with magnesiochromite (MgCr 2 O 4 ); sp. gr. 5.1; black; sub-metallic lustre; crystals cubic, but normally it is massive or a granular aggregate; occurs in basic and ultrabasic rocks. It

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  • THE ECONOMIC IMPORTANCE OF KIZILDAG ULTRAMAFIC ROCKS
    THE ECONOMIC IMPORTANCE OF KIZILDAG ULTRAMAFIC ROCKS

    Aug 01, 2010 The ultramafic rocks are also the host rocks for chromite deposits which can be counted as important. Between the years of 1990 and 2000, approximately 100,000 tons of chromite was exploited. After the year of 2000, economical disadvantages of the chromite mining in the region, the extraction of chromite were ended since the olivine mining was

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  • 40 Common Minerals and Their Uses
    40 Common Minerals and Their Uses

    Chromite The U.S. consumes about 6 percent of world chromite ore production in various forms of imported materials, such as chromite ore, chromite chemicals, chromium ferroalloys, chromium metal and stainless steel. Used as an alloy and in stainless and heat resisting steel products. Used in chemical and metallurgical industries (chrome fixtures

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  • Distinctive melt activity and chromite mineralization in
    Distinctive melt activity and chromite mineralization in

    Jan 30, 2019 The intensity of Fe-Mg exchange is a function of the relative proportion of chromite and olivine such as, the higher the chromite proportion in the rock such as a chromite band (Fig. S2 online), the higher the modification of the olivine composition as revealed in previous studies , , . Because of the high olivine/chromite ratios in dunites

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  • II. IMPORTANCE OF MINERALOGY IN MINERAL
    II. IMPORTANCE OF MINERALOGY IN MINERAL

    the excavated ore gets partly contaminated by the surrounding host rock (overburden) and the ... chromite and magnetite may form in a magmatic crystallization process whereas iron ore may form in a sedimentary environment with the episodes ... Knowledge of the sizes and intergrowth relationships of ore mineral grains is of great importance

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  • Peridotites, chromitites and diamonds in ophiolites
    Peridotites, chromitites and diamonds in ophiolites

    Feb 16, 2021 The combined effect of melt–rock interaction and melt mixing has been previously suggested to move the liquid into the chromite crystallization field, resulting in the formation of chromitite 24

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  • How to Recover Chromite
    How to Recover Chromite

    Oct 21, 2017 How to Recover Chromite. The USBM conducted laboratory research including operating a nominal 100 lb/h pilot plant to demonstrate the recovery and concentration of chromite by gravity and flotation operations. Gravity beneficiation test results show that concentrates contained as much as 52 pct chromic oxide (Cr2O3) with recoveries of about 80

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  • Chromite - ScienceDirect
    Chromite - ScienceDirect

    Jan 01, 2016 Chromite mining wastes have the potential to cause serious environmental contamination. This occurs in places around the world where these wastes are inadequately managed. Overburden is an important type of mine waste. Overburden includes the soil and rock

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  • Chromite - University of Auckland
    Chromite - University of Auckland

    Chromite. Chromite, an oxide mineral, is the major ore of chromium. It is often used for the bricks and linings of blast furnaces as it can withstand very high temperatures. Chromite is one of the first minerals to crystallise in deep ultra- mafic magmas, and becomes concentrated as it sinks to the bottom of the magma chamber

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  • limestone | Characteristics, Formation, Texture, Uses
    limestone | Characteristics, Formation, Texture, Uses

    Limestone, sedimentary rock composed mainly of calcium carbonate, usually in the form of calcite or aragonite. It may contain considerable amounts of magnesium carbonate (dolomite) as well; minor constituents also commonly present include clay, iron carbonate, feldspar, pyrite, and quartz

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  • Chromite - Department for Energy and Mining
    Chromite - Department for Energy and Mining

    The most important use of chrome is in production of high-strength alloys and alloys which are heat, abrasion, corrosion and oxidation resistant. Approximately half of all chromite production goes into the manufacture of stainless steel. Chromium chemicals are used for many purposes; pigments, photography and

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  • Chromite: The only mineral ore of chromium metal
    Chromite: The only mineral ore of chromium metal

    Chromite is important because it is the only economic ore of chromium, an essential element for a wide variety of metal, chemical, and manufactured products. Many other minerals contain chromium, but none of them are found in deposits that can be economically mined to produce chromium

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  • Chromite | Chromium Ore, Properties, Uses and
    Chromite | Chromium Ore, Properties, Uses and

    Jul 02, 2019 Chromite is an oxide mineral that an iron chromium oxide with formula: FeCr2O4. It is belonging to the spinel group. Chromite is the most important ore of chromium. Crystals are uncommon, but when found they are octahedral. Chromite is usually massive or in the form of lenses and tabular bodies, or it may be disseminated as granules

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  • What is the geological importance of chromite-spinel?
    What is the geological importance of chromite-spinel?

    It is necessary to note that mineral chrome-spinel is well-known and important mineral-satellite of diamond. See, for instance, the following articles available in the ResearchGate: Eppelbaum, L

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  • Stratiform Chromite Deposit Model - USGS
    Stratiform Chromite Deposit Model - USGS

    potential of chromite deposits depends mainly on the thickness, continuity, and grade of ore. The most important uses of chromium are in stainless steels, nonferrous alloys, and chromium plating. Chemical-grade chromium is widely used in chemicals and pigments. Chromium also is an important component in

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  • Chromitite - an overview | ScienceDirect Topics
    Chromitite - an overview | ScienceDirect Topics

    Chromitite is essential part of the layered intrusion containing PGMs-Ni-Cr mineralization hosted by mafic to ultramafic suits of rocks that include peridotites, pyroxenite, serpentinite, and dunite. From: Platinum-Nickel-Chromium Deposits, 2017. Download as PDF. About this page

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  • limestone | Characteristics, Formation, Texture
    limestone | Characteristics, Formation, Texture

    enormous reserves of easily exploited limestone that form the basis of a growing cement industry, a major component of the manufacturing sector. Other minerals that are exploited include chromite (mostly for export), barite, celestine (strontium sulfate), antimony, aragonite (calcium carbonate), gypsum, rock

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