chromite

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chromite

chromite , 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 processes usually associated with plate convergence (see plate tectonics ). 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, Zimbabwe, the Philippines, and Turkey.

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chromite

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

chromite Black mineral, ferrous chromic oxide (FeO.Cr₂O₃), separated from magma in the formation of igneous rock. It is weakly magnetic and opaque. Hardness 5.5; r.d. 4.6.

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Free newspaper and magazine articles

	Resource Finance Announces a New Source of Chromite in the USA and Reports on the Oregon Resources Corp. Industrial Minerals Project. Business Wire; 1/10/2006
	IRAN: PRIVATE SECTOR TO MAKE MAJOR INVESTMENT IN CHROMITE EXTRACTION. Newspaper article from: IPR Strategic Business Information Database; 7/4/2005
	Legend International Holdings Announces That Macro-Diamonds and Kimberlitic Chromites Have Been Recovered in a Stream Sample at the Abner Range Project in the Northern Territory of Australia. Business Wire; 4/11/2007

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	Chromite Magazine article from: Mining Engineering; 6/1/2000; ; 700+ words ; J.F. PAPP. US Geological Survey Chromite ore is produced in 18 countries. South...than half of the world's production. Chromite ore is consumed by the chemical, foundry...produced. Foundry industry products include chromite casting sand. Refractory industry products...
	Freewest Intersects 110 Metres of Chromite Mineralization in 1.6 Kilometre Step-Out Hole Testing the Black Thor Chromite Zone on Its 100%-Owned McFaulds Property, Northern Ontario. News Wire article from: Canadian Corporate News; 9/29/2008; 700+ words ; ...08-03 contains a 50 metre-wide section of semi-massive and massive chromite within a broader zone of 110 metres of chromite mineralization - The Black Thor chromite zone currently has a minimum strike length of 1600 metres and remains open...
	NORONT OUTLINES EXTENSIVE CHROMITE MINERALIZATION AT BLACKBIRD. News Wire article from: AsiaPulse News; 1/15/2009; 700+ words ; ...Noront Continues to Outline Extensive Chromite Mineralization at Blackbird TORONTO...additional chromium assay results from its chromite exploration activities in the McFaulds...assay results from holes on the Blackbird Chromite Deposits include widespread chromite...
	Freewest Intersects 174 Metres of Chromite Mineralization at Black Thor and Provides Drilling Update on Its 100%-Owned McFaulds Property, Northern Ontario. News Wire article from: Canadian Corporate News; 3/25/2009; 700+ words ; ...Ring of Fire metal district. BLACK THOR CHROMITE ZONE DRILL RESULTS: Diamond drilling...January, continues to expand the limits of chromite mineralization that currently remain...is the intersection of 174 metres of chromite mineralization in drill hole BT-09...
	Mining a domestic source of chromite: a mineral deposit in Oregon is being developed to be a significant source of chromite sand for U.S. metalcasting facilities, offering a cost-effective alternative to the current South African chromite choices. Magazine article from: Modern Casting; 2/1/2006; ; 700+ words ; ...capacity than other chromites or specialty sands...comparing the ORC chromite sand with an Australian...blends of the ORC chromite with the two South African chromites, the Australian...investigated. ORC Chromite Stands Out In every...
	Noront Continues to Outline Chromite Mineralization at Blackbird One and Two. News Wire article from: Canadian Corporate News; 10/16/2008; 700+ words ; ...present additional assay results from its chromite exploration activities in the McFaulds...Blackbird Two continues to encounter chromite mineralization in holes designed to test...ultimate potential dimensions of the chromite mineralization. The continued success...
	Noront Resources Reports Massive Chromite Assay Results at Blackbird Deposits. PR Newswire Europe; 7/6/2009; 700+ words ; ...completed on its Blackbird One and Two chromite deposits, located in McFaulds Lake in...the 92 holes completed at the Blackbird chromite deposits. Results from the remaining...drill results continue to demonstrate chromite grades and chrome to iron ratios that...
	Noront Resources Completes Preliminary Metallurgical Tests on Blackbird Chromite Mineralization. PR Newswire Europe; 4/27/2009; 700+ words ; ...metallurgical studies prepared by SGS Lakefield on chromite mineralization from its Blackbird chromite deposits in the Ring of Fire area of northern...products, not only from the high grade massive chromite beds, but also from lower grade zones diluted...
	Noront Continues to Outline World Class Chromite Mineralization at Blackbird One and Two. News Wire article from: Canadian Corporate News; 9/23/2008; 700+ words ; ...Blackbird One continues to encounter visible chromite mineralization in several holes testing...ratio, as well as the large crystals of chromite in a talc matrix observed during microscopic...removes the talc matrix and liberates the chromite would enhance the value of the rock substantially...
	Freewest Resources Canada Inc.: High-Grade Chromite Intersections Continue to Outline Big Daddy Chromite Deposit James Bay Lowlands of Ontario. News Wire article from: Canadian Corporate News; 12/15/2008; 700+ words ; ...86 g/t PALLADIUM, SANDWICHED BETWEEN MASSIVE CHROMITE LAYERS. - MASSIVE CHROMITE BED(S) ENCOUNTERED OVER STRIKE LENGTH OF 400...Spider-KWG Joint venture has been on the massive chromite occurrence that was first discovered on the Freewest...