chromite magnetic page

  • Peridotite: Igneous Rock - Pictures, Definition & More

    Peridotite bodies are also found by prospecting for some of the rare minerals that they contain. When a peridotite weathers, the olivine breaks down, quickly leaving the more resistant minerals behind. Geologists have located peridotite bodies by prospecting for chromite, garnet, and other resistant indicator minerals.

  • Magnetic and Magnetocaloric Properties of Iron Subs ...

    Magnetic and Magnetocaloric Properties of Iron Subs Tituted Holmium Chromite and Dysprosium Chromite. by Vinit K Sharma, Fernando A Reboredo. Publication Type Journal Journal Name RSC Advances Publication Date January, 2016. Page Numbers 9475 to 9483 ...

  • Meteorite Minerals

    Schreibersite is yellowish metallic, very hard--though not as hard as Cohenite--brittle, and magnetic. The crystal form appears as oriented plates in the matrix of kamacite and taenite. Plate shaped Rhabdites are found in hexahedrites. Oxides Chromite--FeCrO4--This ore of chrome is common on earth and as a trace mineral in iron meteorites. It ...

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  • Magnetic separation studies on ferruginous chromite fine ...

    S.K. Tripathy et al., Magnetic separation studies on ferruginous chromite fine to enhance Cr:Fe ratio 219 Table 1. Particle size and size-wise chemical analysis results Particle size / Assay value ...

  • How Is Chromite Used? | Reference

    Chromite, a mineral ore that is mined from crystallized magma, is used in the production of steel as a pigment and as a catalyst in many chemical reactions. It is also an important component of the leather tanning process. Chromite is also used to anodize aluminum for use in jet engines.

  • Low-temperature magnetism of troilite and chromite

    Our observations summarized above does not reveal presence of chromite (detection limit ~1%) and indicate rather different magnetic behavior of our samples over 70 K. Thus observed evidence does not support chromite contamination to be responsible for magnetic behavior of our troilite samples at ≈ 70 K.

  • Chromite mining - The Oregon Encyclopedia

    Chromite is used as an alloy of steel for hardening cutting tools, ordnance, and armor plate. The story of chromite in Oregon begins during the Jurassic Period, approximately 150 million years ago, when both the Klamath and Blue mountains were part of Oregon's early Coast Range.

  • Low temperature magnetic transition of chromite in ...

    [11] Chromite (FeCr 2 O 4) is an ubiquitous accessory mineral in meteorites, in particular in OC. Cr 2 O 3 concentrations in OC are very constant, with a mean value of 0.52 ± 0.05 wt% (n = 175 [Jarosewich, 1990]). Chromite being the only significant Cr-bearing phase, an average mass content of 0.77 wt % can be computed for chromite in OC.

  • GEOLOGY/GLE 594: Introduction to Applied Geophysics Fall ...

    that yielded the anomaly, i.e., the relative location of the chromite bearing versus barren serpentine deposits. b) Assuming a 2-dimensional E-W zone of mineralization, estimate the depth to the top of the body causing the magnetic anomaly using the 'half-slope' method given in your text (Bottom of page 87 and Figure 3.18).

  • Magnesiochromite: The mineral magnesiochromite information ...

    Magnesiochromite is very similar to Chromite, and is often mistaken for it.Due to their similarity, it is very difficult to visually distinguish these two minerals. Magnesiochromite is the magnesium-dominating form in a series with Chromite, whereas Chromite is iron-dominating.

  • Chromite

    The sample is 6 cm x 4 cm. I collected the sample from the Chrome Claim's main pit in 1991. Most of the Chromite in the River Sill is subhedral but occasionally when there is a white matrix the Chromite forms 1 to 2 mm octahedrons.

  • Chromite Mineral Datat

    Chromite Antigorite Comments: Chromite veins in yellow to green antigorite with picrolite, chromian antigorite and dolomite (polished section). Location: Wood's Mine, near 'Texas', Little Britain Township, Lancaster County, Pennsylvania, USA.

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  • Magnetic and magnetocaloric properties of iron substituted ...

    Magnetic and magnetocaloric properties of iron substituted holmium chromite and dysprosium chromite . Shiqi Yin, a Vinit Sharma, b Austin McDannald, c Fernando A. Reboredo b and Menka Jain * a d Author affiliations * Corresponding authors ...

  • Chromite | Encyclopedia

    chromite (krō´mīt), dark brown to black mineral. It is an iron-chromium oxide, FeCr 2 O 4, with traces of magnesium and aluminum. Its crystals are octahedral, but rare; it usually occurs as irregular, granular masses in association with igneous rocks, including ophiolites, which are segments of oceanic crust exposed on land by tectonic ...

  • U.S. DEPARTMEM1 OF THE INTERIOR GEOLOGICAL SURVEY .

    U.S. DEPARTMEM1 OF THE INTERIOR GEOLOGICAL SURVEY CHROMITE GEOPHYSICS: AN EXAMPLE OF SYNERGISTIC GEOPHYSICAL EXPLORATION FOR INDUSTRIAL COMMODITIES by Jeffrey C. Wynn Open-File Report This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature.

  • Multi Gravity Mozley Separator Drum - 911Metallurgist

    Beneficiation of Chromite Concentration Waste By Multi-Gravity Separator And High-Intensity Induced-Roll Magnetic Separator. With more mining activity, the amount of waste materials readily increases in some countries. Storage of waste materials or tailings disposal has become a serious matter for the mining industry due to its growth.

  • system appendPDF cover-forpdf

    magnetic susceptibility varies greatly in the range of 2×10-7 to 1.9 × 10-3 in SI units. However, in nature, chromite with this susceptibility range is uncommon and the expected range is 2 × 10-7 to 2.5 × 10-5 in SI units (Allen 2001). Despite these measurements, chromite samples found in .

  • Chromite - The Full Wiki

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

  • AN EXAMPLE OF CHROMITE PROSPECTION BY MAGNETICS - .

    AN EXAMPLE OF CHROMITE PROSPECTION BY MAGNETICS * AN EXAMPLE OF CHROMITE PROSPECTION BY MAGNETICS * BOSUM, W. 1970-12-01 00:00:00 Abstract Results of rock magnetic investigations and magnetic field measurements in the Logar Valley, Afghanistan, are presented. Rock magnetic investigations on samples of the ore and the country rock have demonstrated that the chromite is strongly magnetic ...

  • Chromite - CAMEO

    Chromite is composed of oxides of iron and chromium and may contain magnesium and aluminum. Chromite is a black to dark brown color stone with a metallic luster. It looks like magnetite but has poor magnetic properties. Chromite is found in South Africa, Rhodesia, Cuba, Turkey, the Philippines, India, Japan, Greece, Albania, Russia, Finland ...

  • Chromium | Minerals Education Coalition

    Chromium (Cr) is a hard, bluish metallic element. The only ore of chromium is the mineral chromite and 99 percent of the world's chromite is found in southern Africa and Zimbabwe. Geologists estimate that there are about 11 billion tons of mineable chromite ore in the world, enough to supply the current demand for hundreds of years.

  • Chromite Mineral Data

    Visit our Advertisers for Chromite : Dakota Matrix Minerals Google Search for Chromite John Betts Fine Minerals Search for Chromite McDougall Minerals Google Search for Chromite Rock and Mineral Shows Google Search for Chromite Weinrich Minerals, Inc. Google Search for Chromite. Ask about Chromite .

  • Geological and Geophysical Studies of Chromite Deposits in ...

    the Josephine Peridotite, Northwestern California and Southwestern Oregon Structure of Part of the Josephine Peridotite, Northwestern California and Southwestern Oregon By JAMES G. EVANS Geology and Chromite in the Low Plateau Area, Del Norte County, California By JOHN P. ALBERS A Magnetic Interpretation of the Josephine Peridotite,

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  • Chromite | mineral | Britannica

    Chromite, relatively hard, metallic, black oxide mineral of chromium and iron (FeCr2O4) that is the chief commercial source of chromium. It is the principal member of the spinel series of chromium oxides; the other naturally occurring member is magnesiochromite, oxide of magnesium and chromium

  • Magnetic irreversibility and spin dynamics in ...

    Nov 15, 2017 · Magnetic irreversibility and spin dynamics in nanoparticles of iron-doped europium chromite. ... The easy-axis for the Cr 3+ magnetic moments is along the c-axis direction of an orthorhombic cell while the magnetic structure is represented by the ...

  • Copper chromite - Wikipedia

    Copper chromite is produced by thermal decomposition of one of three substances. The traditional method is by the uncatalyzed ignition of copper chromate:. CuCrO 4 → CuCrO 3 + O. Copper barium ammonium chromate is the most commonly used substance for production of copper chromite.

  • Chromium (Cr) | AMERICAN ELEMENTS

    Chromium is mined as chromite, an iron chromium oxide mineral. This ore can be processed either to pure chromium metal or to ferrochrome, an iron-chrome alloy used primarily in the production of stainless steel. Chromium can also be recovered from scrap, and recycled metal accounts for almost a third of chromium used annually.

  • Chromite - Wikipedia

    Chromite today is mined particularly to make stainless steel through the production of ferrochrome (FeCr), which is an iron-chromium alloy. Chromite grains are commonly found in large mafic igneous intrusions such as the Bushveld in South Africa and Travancore in India.

    Category: Oxide minerals, Spinel group, Spinel .
  • Chromite: The only mineral ore of chromium metal - Geology

    Hand specimen identification of chromite requires a consideration of: color, specific gravity, luster, and a characteristic brown streak. The most important clue to identifying chromite is its association with ultrabasic igneous rocks and metamorphic rocks such as serpentinite. Chromite is .

  • Mineral deposit - Magmatic cumulates | Britannica

    Mineral deposit - Mineral deposit - Magmatic cumulates: Magmatic segregation is a general term referring to any process by which one or more minerals become locally concentrated (segregated) during the cooling and crystallization of a magma. Rocks formed as a result of magmatic segregation are called magmatic cumulates. While a magma may start as a homogeneous liquid, magmatic segregation ...

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