Chromite Deposits Grade Jul

  • (PDF) Podiform chromite deposits; database and

    Grade and tonnage models of major podiform, minor podiform, and banded podiform chromite deposits. [Tonnage is in millions of metric tons; Cr 2 O 3 grades are in percents; Ru, Ir, Rh, Pd, and Pt

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  • This document is part of a larger publication

    A large, low-grade lateritic deposit of chromium, nickel and platinum has been defined at shallow depths in . the Flemington intrusion, part of the Tout Intrusive Complex near Fifield (Figure 6). This intrusion contains a core of ultramafic rocks, principally dunite, with an outer shell of gabbro and hornblende-rich rocks. Chromite grains are present in local 1–2 cm thick bands that contain

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  • GRAVITY CONCENTRATION OF SUDANESE CHROMITE ORE

    Usually the chromite deposits occur as small grains, but by the segregation of these grains, ore-bodies rich in Cr 2 O 3 may be formed (Read, 1957). 2. Background Although flotation offers an attractive technique for the separation of fine materials with minimum chromium losses, earlier flotation results of low-grade chromite ores were inferior to those obtained by tabling (Nafziger et al

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  • Chromite - Wikipedia

    Chromite in podiform deposits form as anhedral grains. The ores seen in this type of deposit have nodular texture and are loosely-packed nodules with a size range of 5–20 mm. Other minerals that are seen in podiform deposits are olivine, orthopyroxene,

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  • Podiform chromite deposits--database and

    DOI: 10.3133/SIR20125157 Corpus ID: 54921934. Podiform chromite deposits--database and grade and tonnage models @article{Mosier2012PodiformCD, title={Podiform chromite deposits--database and grade and tonnage models}, author={Dan L. Mosier and D. Singer and B. Moring and J. Galloway}, journal={Scientific Investigations Report}, year={2012} }

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  • Podiform chromite deposits--database and

    DOI: 10.3133/SIR20125157 Corpus ID: 54921934. Podiform chromite deposits--database and grade and tonnage models @article{Mosier2012PodiformCD, title={Podiform chromite deposits--database and grade and tonnage models}, author={Dan L. Mosier and D. Singer and B. Moring and J. Galloway}, journal={Scientific Investigations Report}, year={2012} }

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  • CHROMITE DEPOSITS - Noront Resources

    Together, these chromite deposits, which are located in the highly prospective Ring of Fire region, total over 200 million tonnes of measured and indicated resources and roughly 50 million tonnes of inferred resources. The Blackbird deposit, which was discovered by Noront in 2008, is located within 1 kilometre of our flagship Eagle's Nest project. Chromite layers are sub-vertical and extend

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  • GRAVITY CONCENTRATION OF SUDANESE CHROMITE ORE USING

    Usually the chromite deposits occur as small grains, but by the segregation of these grains, ore-bodies rich in Cr 2 O 3 may be formed (Read, 1957). 2. Background Although flotation offers an attractive technique for the separation of fine materials with minimum chromium losses, earlier flotation results of low-grade chromite ores were inferior to those obtained by tabling (Nafziger et al

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  • Chromite mining - The Oregon Encyclopedia

    17.03.2018· Most deposits of chromite in Oregon have been found near Grants Pass on the Siskiyou National Forest and near John Day on the Malheur National Forest. Domestic mining for chromite was restricted to a few locations in the United States, including Montana, California, and Oregon, and mining the mineral was only economically feasible during times of political conflict. During wartime, the United

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  • Chromite: The only mineral ore of chromium metal

    Podiform deposits are known in Kazakhstan, Russia, the Philippines, Zimbabwe, Cyprus, and Greece. The first discoveries of podiform chromite deposits were made near Baltimore, Maryland in the early 1800s. These deposits supplied nearly all of the world's chromite until about 1850. These deposits were small and are no longer in production.

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  • Podiform chromite deposits - mrdata.usgs.gov

    Subtype of podiform chromite deposit as determined by the grade and tonnage models. Textual values of no more than 15 characters. tectset Paleotectonic setting. Paleotectonic setting, a preliminary categorization of the deposit according to the tectonic setting in which the deposit formed, midocean ridge, off-ridge, or suprasubduction. Textual values of no more than 15 characters. Value

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  • (PDF) Chromite - ResearchGate

    In Aladag (Adana, South Turkey) a low-grade chromite deposit (5.42% Cr. 2. O. 3. grade) with 200 metric tons reserve has yet to be exploited. Chromite demand in Turkey is mostly met by

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  • [PDF] Podiform chromite deposits--database

    DOI: 10.3133/SIR20125157 Corpus ID: 54921934. Podiform chromite deposits--database and grade and tonnage models @article{Mosier2012PodiformCD, title={Podiform chromite deposits--database and grade and tonnage models}, author={Dan L. Mosier and Donald C. Singer and Barry C. Moring and John P. Galloway}, journal={Scientific Investigations Report}, year={2012} }

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  • Podiform chromite deposits--database and

    Most podiform chromite deposits are found in dunite or peridotite near the contact of the cumulate and tectonite zones in ophiolites. We have identified 1,124 individual podiform chromite deposits, based on a 100-meter spatial rule, and have compiled them in a database. Of these, 619 deposits have been used to create three new grade and tonnage models for podiform chromite deposits. The major

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  • Chromite - Department for Energy and Mining

    Economic deposits form by crystallisation of chromite from a cooling magma, resulting in large stratiform deposits or smaller pod-like deposits. The most significant occur in large, layered, igneous intrusions in shield areas older than 1.9 billion years. The largest and best known of these is the Bushveld Complex (Republic of South Africa), which extends over 12 000 km 2 and contains 60% of

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  • Chromite - an overview | ScienceDirect Topics

    In Aladag (Adana, South Turkey) a low-grade chromite deposit (5.42% Cr 2 O 3 grade) with 200 metric tons reserve has yet to be exploited. 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. The demand

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  • Chromite - Assignment Point

    Australia's only significant chromite deposit, Coobina, is a straitform deposits in the Pilbara region of Western Australia, with a possible resource of 1.5 Mt at 29.4% Cr. The mine produced 452 000t of chromium in 2012. Afghanistan has significant deposits of high grade chromite ore, which is mined illegally in Khost Province and then smuggled out of the country. In Pakistan, chromite is

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  • Chromite --- Chrome Ore --- Chromitesand ---

    High purity deposits are rare owing to replacement by certain elements. In nature, ferrous iron tends to be partially replaced by magnesium, while chromium may be partially replaced by aluminium or ferric iron. As a result, a range of chromite grades can occur in any deposit, with each grade

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  • Geological features and origin of the chromite

    The chromiferous ultramafic rocks of Sukinda Valley (21°0'–21°5'N:85°43'–86°0'E) of Orissa are intrusive into the Iron-Ore Supergroup (2,950–3,200 Ma) at the eastern periphery of the Indian Precambrian shield. Both laterally and vertically, chromite occurs as persistent layers, lenses or pockets in the serpentinized and silicified dunite-peridotite extending over a strike length of

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  • Podiform Chromite Deposits—Database and Grade and Tonnage

    the tonnages and grades of podiform chromite deposits in dif-ferent paleotectonic settings and ophiolite zones. Tonnage and grade data are revised here using a sepa-ration rule of 100 m to define a deposit. Geologic data are compiled in a database with documentation. This global com- pilation of podiform chromite deposits contains 1,124 deposits (fig. 1). It is not our intent to include every

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  • [PDF] Podiform chromite deposits--database

    DOI: 10.3133/SIR20125157 Corpus ID: 54921934. Podiform chromite deposits--database and grade and tonnage models @article{Mosier2012PodiformCD, title={Podiform chromite deposits--database and grade and tonnage models}, author={Dan L. Mosier and Donald C. Singer and Barry C. Moring and John P. Galloway}, journal={Scientific Investigations Report}, year={2012} }

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  • How Does Chromite Occur? — Dudolp Mine

    Chromite deposits must be classified while considering chromite prices formation. However, this sorting can be done in various ways. For example, in terms of structure, petrography and chemical composition. In addition, there are those who classify the bedrock according to the genre of the main field. From these, it is generally accepted that the classification of the structure is most

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  • Blackbird Chromite Deposit - Noront Resources

    The Blackbird chromite deposit was discovered in 2008 and will be the second mine in Noront's pipeline. It is one of a number of large tonnage, high-quality chromite discoveries in the Ring of Fire. It offers significant potential due to its size, grade and location (less than 1 km from Eagle's Nest). Deposit Geology & Mineralization. Regionally the Blackbird deposit is associated with an

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  • Podiform chromite deposits - mrdata.usgs.gov

    Subtype of podiform chromite deposit as determined by the grade and tonnage models. Textual values of no more than 15 characters. tectset Paleotectonic setting. Paleotectonic setting, a preliminary categorization of the deposit according to the tectonic setting in which the deposit formed, midocean ridge, off-ridge, or suprasubduction. Textual values of no more than 15 characters. Value

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