occurrence of chromite ore minerals

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  Microsoft Word - textures

  202084 · 1- Cumulus textures: result from the settling of an ore deposit from a crystallizing magma. The most common example is chromite which occurs as a cumulus phase relative to pyroxenes. Granobalstc texture with cumulate olivine and chromite. 2- Intergranular or intercumulus textures: where the ore mineral occurs as an intergranular …

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  Refractory- and metallurgical-type chromite ores, Zambales …

  The Zambales ophiolite is the major source of chromite ore in the Philippines. The chromitites are concordant cumulates and are associated with distinct chromitite-bearing sequences within the mantle peridotites. Refractory and metallurgical chromite deposits are spatially separated and related to different lithologic associations, which crystallized from …

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  Relationship between process mineralogical characterization ...

  Process mineralogy of low-grade laterite nickel ore in Indonesia was systematically characterized and the beneficiation process of mineral components such as limonite, serpentine and chromite was studied on the basis of process mineralogy. The results show that the low-grade laterite nickel ore is a typical weathering sedimentary metamorphic …

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  Chromite Ore - an overview | ScienceDirect Topics

  Chromite ore is usually a combination of spinels with associated minerals such as calcite, magnetite, talc, serpentines and uvarovite. Chromites crystals exhibit an octahedral structure similar to magnetite. The Cr 3+ ions are in the octahedral position with oxygen. The chromium rich phase is antiferromagnetic.

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  Mineral Resource of the Month: Chromium - EARTH Magazine

  201851 · Chromium can be found in many minerals, but the only economically significant chromium-bearing mineral is chromite. Chromite has been mined from four different deposit types: stratiform chromite, podiform chromite, placer chromite, and laterite deposits. Most of the world’s resources, however, are located in stratiform chromite …

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  Prospecting for ophiolite-type chromite deposit in Sartohay, …

  202351 · Chromite is a critical mineral that is of great significance for the development of metallurgical, chemical, and other industries. In order to study the deep ore prospecting methods of ophiolite-type chromitite, we have carried out plane-profile geological and mineral surveys, as well as high-precision gravity, magnetic, and controlled source audio …

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  Platinum Group Element - an overview | ScienceDirect Topics

  Alaskan-Type Complexes and Their Associations With Economic Mineral Deposits Joyashish Thakurta, in Processes and Ore Deposits of Ultramafic-Mafic Magmas through Space and Time, 2018 9.6.4 PGE-Enrichment and Possible Origin The PGE-rich placer deposits associated with some Alaskan-type complexes are thought to originate from …

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  Chromium Statistics and Information | U.S. Geological Survey

  Statistics and information on the worldwide supply of, demand for, and flow of the mineral commodity chromium. Chromium (Cr) has a wide range of uses in metals, chemicals, and refractories. It is one of the Nation's most important strategic and critical materials. Chromium use in iron, steel, and nonferrous alloys enhances hardenability and ...

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  PGE geochemistry and platinum-group minerals in …

  2023726 · Chromite has uniform composition, massive, with numerous pull-apart textures, cracks, and brecciation. Silicate inclusions and trails of fluid inclusions are observed within the chromite grains or interstitials (figure 4 f). Platinum-group minerals and Cu and Cu–Ni sulfide occur as inclusion phases or within the interstitial spaces of ...

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