Chromite is found in beach sands derived from the weathering of chromite-bearing rocks and laterite soils that developed over peridotite. Beach sand rich in chromite and other heavy minerals is sometimes mined, processed to remove heavy minerals, and returned to the environment.
Chromite is found as orthocumulate lenses of chromitite in peridotite from the Earth's mantle.It also occurs in layered ultramafic intrusive rocks. In addition, it is found in metamorphic rocks such as some serpentinites. Ore deposits of chromite form as early magmatic differentiates. It is commonly associated with olivine, magnetite, serpentine, and corundum.
These rocks contain considerable amount of podiform chromite deposits. Mineralogy and petrology of chromite ore and associated ultramaphic rocks of Jijal Complex, District Shangla, KP, Pakistan Abdul Jamae Jamae, a deputy speaker in the council, says Pakistani engineers in Zana Khan district are digging up chromite for some months now.
Chromite grains in chromitite contain lamellar inclusions of chlorite oriented parallel to (l 1 l). The chromite grains have a core of aluminous chromite and a broad margin of ferrian chromite (ferritchromite). The chlorite is a Cr-bearing IIb clinochlore, and the inclusions occur preferentially within the ferritchromite.
Oct 15, 2018· Chromite: The only mineral ore of chromium metal - Geology.com. Chromite is the only ore of chromium, a metal essential for making stainless steel, Small amounts of chromite are found in many types of rock.
Textures in chromite ores, and structural relationships between chromite deposits and country rocks, show that layering and related foliation and lineation were formed or modified by flowage. Gabbro is believed to form the upper part of the Complex in general.
Chromitite is an igneous rock composed chiefly of the mineral chromite. The only commercial source of chromium and its compounds, chromite is used in the manufacture of refractory materials. Principal countries producing chromite are South Africa, India, Kazakhstan, and Zimbabwe.
Ore bodies are similar in occurrence to chromite deposits; they are massive or disseminated and are found near the edges of serpentine intrusive rocks. The small size of the deposits and comparatively low titanium content limit their importance as a potential source of titanium.
Peridotite is a dense, coarse-grained igneous rock consisting mostly of the minerals olivine and pyroxene. Peridotite is ultramafic, as the rock contains less than 45% silica (SiO 4− 4). It is high in magnesium (Mg 2+), reflecting the high proportions of magnesium-rich olivine, with appreciable iron.
The serpentine rocks and their serpentine soils were not fit for cultivation, providing a natural host for sparse grasses, scrub brushy oaks and acid loving pine trees. In addition, rare wildflowers are found only in these uncommon serpentine soils.
Nov 05, 2018· Chromite: The only mineral ore of chromium metal - Geology.com. Chromite is the only ore of chromium, a metal essential for making stainless steel, nichrome, chrome plating, pigments, refractories, chemicals and
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.
Ring of Fire chromite deposits Description of the deposits Magmatic deposits are mineralized deposits formed during the solidification of igneous molten rock (magma) deep in the earth.
Feb 04, 2016· kind of minerals in chromite rocks offers 266 chromite ore 42% products. About 86% of these are chrome ore, 1% are crusher, and 1% are mineral separator. A wide variety of. Quotation More. China chromite buyers in.
Occurrences of podiform chromite are found in ophiolitic ultramafic rocks in the Slide Mountain. Neary. 62 pages. ECONOMIC LIMITATIONS: The complex structure and irregular distribution make exploration and development difficult.
Name of deposit Deposit type State or Province Country; Blow-Me-Down: minor podiform chromite: Newfoundland: Canada: Bluff Head: minor podiform chromite: Newfoundland
Chromite is found as orthocumulate lenses of chromitite in peridotite from the Earth's mantle. It also occurs in layered ultramafic intrusive rocks. In addition, it is found in metamorphic rocks such as some serpentinites. Ore deposits of chromite form as early magmatic differentiates.
Occurrence: A cumulus mineral in ultramafic portions oflayered mafic igneous rocks; an accessory mineral in alpine-type peridotites; also detrital. Common in all meteorites, except carbonaceous chondrites, and in lunar mare basalts. Association: Olivine, enstatite, plagioclase, serpentine, magnetite, ilmenite, pyrrhotite, pentlandite, ulvospinel.
Chromite is commonly found as brittle masses in peridotites, serpentines, and other basic igneous and metamorphic rocks; an unusual occurrence is as a crystalline inclusion in diamond. The earliest worked deposits were those in the serpentine of the Bare Hills near Baltimore, Md., U.S.
Petrology of Metamorphosed Chromite-Bearing Ultramafic Rocks from the Red Lodge District, Montana By Patricia J. Loferski Abstract The chromite deposits near Red Lodge, Mont., occur in small ultramafic lenses that are enclosed in remnants of a metasedimentary-metavolcanic sequence that in turn are sur rounded by Archean granitic gneiss.
chromite in rocks - mayukhportfoliocoin. Chromite: The mineral Chromite information and pictur Complete Information Guide to Rocks, Minerals, & Gemstones, Chromite is a commercially valuable mineral as it is the principle ore of the element chromium. More
Chromite in igneous rocks may form bands or layers which are very important mineral resources. These layers are the result of a crystal settling in a magma chamber. These layers are the result of a crystal settling in a magma chamber.
Chromite is the most important ore of chromium from which it derives its name. Chromium is an important metal and has a wide range of industrial uses. Chromite forms in deep ultra-mafic magmas and is one of the first minerals to crystallize.
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.
The Serpentine Barrens of Central Maryland produced an interesting landscape for a 19th century business monopoly on chromite ore, being the sole resource for world looking for new metal alloys.…
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