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Chromite rock

Chromite occurs only in peridotite and serpentine, two closely related rock types, or in sand and gravel derived from these rocks. In its host rocks it is normally present as tiny disseminated grains, but in places is concentrated in masses sufficiently large to be mined

  • 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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  • Chromite Mineral Data
    Chromite Mineral Data

    McDougall Minerals Google Search for Chromite Mineral News Website Link Rock and Mineral Shows Google Search for Chromite Weinrich Minerals, Inc. Google Search for Chromite. Ask about Chromite here : Ask-A-Mineralogist from the Mineralogical Society of America Mindat.org's Discussion Groups

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

    Some layers consist of +90% chromite, making the rare rock type as chromitite. UG2 occurs in both the west and east lobe. The layer has sharp lower and top contacts with thicknesses ranging between 40 and 120 cm. UG2 is usually underlain by a coarse-grained feldspathic pyroxenite and rarely by anorthosite

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

    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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  • Chromite and other mineral deposits in serpentine rocks of
    Chromite and other mineral deposits in serpentine rocks of

    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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  • Olivine-chromite-rock: Mineral information, data and
    Olivine-chromite-rock: Mineral information, data and

    A rock consisting of at least 90% combined chromite and olivine which would not otherwise fit into the standard QAPF system

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  • Peridotite: Igneous Rock - Pictures, Definition & More
    Peridotite: Igneous Rock - Pictures, Definition & More

    Chromite in Peridotite. Some peridotites contain significant amounts of chromite. Some of these form when a subsurface magma slowly crystallizes. During the early stages of crystallization, the highest-temperature minerals such as olivine, orthopyroxene, clinopyroxene, and chromite begin to

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  • Igneous Minerals - Union College
    Igneous Minerals - Union College

    Chromite crystals in olivine in a primitive basalt. Chromite is dark-brown to opaque at full thin section thickness. Chromite is a spinel-type mineral, like magnetite, and has an extensive solid solution in the magnetite composition direction. Cr-Mg-Al-rich chromites are realtively transparent, and can be dark-brown at full thin section thickness

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  • Chromite Mineral Specimen For Sale - Dakota Matrix
    Chromite Mineral Specimen For Sale - Dakota Matrix

    Chromite - Rich, solid granular or crystalline aggregate of black Chromite ore. Though not producing Chromite ore, this large 30 mile complex of layer igneus mafic rock currently does not produce chromium ore. It is currently mined for its platinum and palladium only. Ore specimens are hard to obtain. Widely used in chemicals, metals and refractory materials. Used to harden iron, nonferrous

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  • Chromite | Earth Sciences Museum | University of Waterloo
    Chromite | Earth Sciences Museum | University of Waterloo

    Chromite is a cumulate mineral which is found in ultramafic portions of layered mafic intrusions or in serpentines and other metamorphic rocks derived from the alteration of ultrabasic rocks. Due to its high crystallization temperature, this mineral is often found in the lower parts of magma bodies from the fractional crystallization process

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  • Chromite - an overview | ScienceDirect Topics
    Chromite - an overview | ScienceDirect Topics

    Chromite has a cubic structure (space group Fd3m) in common with other members of the spinel group of minerals. The name is from the composition and it is not to be confused with chromatite (CaCr 6+ O 4) which has a tetragonal structure (space group I4 1 /amd) and is not related. A chromitite is a rock consisting largely of chromite

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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, but rarely as distinct crystals

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

    Chromite is an oxide mineral composed of chromium, iron, and oxygen (FeCr 2 O 4 ). It is dark gray to black in color with a metallic to submetallic luster and a high specific gravity. It occurs in basic and ultrabasic igneous rocks and in the metamorphic and sedimentary rocks that are produced when chromite-bearing rocks are altered by heat or

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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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  • Chromite: Mineral information, data and localities
    Chromite: Mineral information, data and localities

    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 Series.It is the iron analogue of Zincochromite, Cochromite, Manganochromite and Magnesiochromite and the Cr analogue of Hercynite

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