chromium deposits
  • Podiform chromite deposits - USGS

    Podiform chromite deposits Location and characteristics of 1,124 individual podiform chromite mineral deposits, with grade and tonnage models for chromium as well as several related elements. View

  • Chromium: Mineral information, data and localities.

    Chromium mineral data, information about Chromium, its properties and worldwide locations. ... Deep structure and ore-forming processes of the Sukhoi Log gold-platinum deposit, Russia. In Mineral Deposit Research: Meeting the Global Challenge (pp. 921-923). Springer Berlin …

  • Chromite mining - The Oregon Encyclopedia

    Chromite is a mineral that contains chromium. It is considered a strategic mineral, which generally means that it is necessary for military and industrial use during periods of national emergency.

  • Defects in Hard Chromium Deposits Part I: Causes and Cures

    The causes of and remedies for defects in hard chromium deposits are explored in the first of this two-part P&SF article from 1984.Photomicrographs and SEM (scanning electron microscope) photo­graphs will illustrate that most defects in various hard chromium deposits arise from defects in the basis metal.

  • Defects in Hard Chromium Deposits Part II: Detection ...

    Defects in Hard Chromium Deposits Part II: Detection, Prevention and Repair Most defects in various hard chromium deposits arise from defects in the basis metal. These defects may be in the original metal surface or may be caused by preplate finishing.

  • Soldiers Delight - Maryland

    Several old mines and quarries are still visible in these serpentine barrens. An excerpt from the MGS Baltimore County Report of 1929 discusses the historical chrome deposits, and is adapted here: The commercial source of the element chromium is exclusively in the mineral chromite, which when pure, is an iron chromate of the formula FeO.Cr2O3.

  • Chromium Deposits | The Diggings™

    Browse chromium mineral deposits in Worldwide by region—including North America, Asia, Africa. ... Mine handled by the Bureau of Land Management are not mapped by latitude and longitude, instead, these mines harken back to the Public Land Survey System. Understanding Townships.

  • Podiform Chromite Deposits—Database and Grade and …

    Podiform chromite deposits are an important source for chromite, which is the only ore for chromium, and they are the primary source for both high-chromium, low-aluminum

  • Chromium | Minerals Education Coalition

    Named from the Greek word meaning "color," chromium is a lustrous, hard, bluish-gray metal. It can be polished to a mirror-like finish and is often used ... CHECK OUT THE FIVE FINALISTS FOR MOVE MINING. There will be five finalist teams from three countries vying to win the $5,000 grand prize in the Move Mining live event.

  • Chromium processing | Britannica.com

    Chromium processing, preparation of the ore for use in various products.. Chromium (Cr) is a brilliant, hard, refractory metal that melts at 1,857 °C (3,375 °F) and boils at 2,672 °C (4,842 °F).

  • Chromium (Cr) - Chemical properties, Health and ...

    Chromium in the environment. Chromium is mined as chromite (FeCr 2 O 4) ore. Chromium ores are mined today in South Africa, Zimbabwe, Finland, India, Kazakihstan and the Philippines. A total of 14 million tonnes of chromite ore is extracted. Reserves are hestimated to be of the order of 1 billion tonnes with unexploited deposits in Greenland ...

  • Platinum-Nickel-Chromium Deposits - 1st Edition

    Platinum-Nickel-Chromium Deposits: Geology, Exploration, and Reserve Base is the first reference book to combine information on the discovery of numerous minerals within existing deposits. This book recognizes the close affinity and great natural coexistence of platinum, palladium, chromium, nickel, copper, gold, and silver hosted by unique ...

  • A Primer on Chromium Plating - Jersey Chrome

    Also, thicker deposits are used in applications for harsh environments. Hardness & Lubricity . On a Knoop Hardness scale, a diamond is a '10' and Chromium is a '9'. Few metals can even come close to compare. A chromium plated part is a better part and will last longer due to this main property (hardness) of Chromium.

  • Stratiform Chromite Deposit Model - USGS

    Chromium is the primary commodity associated with stratiform chromite deposits. The economic potential of chromite deposits depends mainly on the thickness, continuity, and grade of ore. The most important uses of chromium are in stainless steels, nonferrous alloys, and chromium plating. Chemical-

  • Chromium - Wikipedia

    Ore deposits of chromite form as early magmatic differentiates. It is commonly associated with olivine, magnetite, ... The chromium extracted from chromite is used in chrome plating and alloying for production of corrosion resistant superalloys, nichrome, and stainless steel.

  • San Luis Obispo County, California Chromium Mineral ...

    Filter 150 chromium mineral deposits by commodity, disposition, development status, and record type in San Luis Obispo County, California. Quick Facts Antimony, Calcium, Chromium, Copper, and Diatomite deposits located in San Luis Obispo County, California.

  • Uses of Chromium | Supply, Demand, Production, Resources

    Where Does Chromium Come From? Chromite, an oxide of iron, magnesium, aluminum, and chromium, is the only ore mineral of chromium. In nature, chromite deposits are generally of two major types: stratiform (layered) and podiform (pod shaped).

  • Chromite: The only mineral ore of chromium metal

    Chromite is the only ore of chromium, a metal essential for making stainless steel, nichrome, chrome plating, pigments, refractories, chemicals and pharmaceuticals.

  • chromites - an overview | ScienceDirect Topics

    S.K. Haldar, in Platinum-Nickel-Chromium Deposits,. 2017 5.4.1.3 Mineralization. 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).

  • Decorative chromium electroplating [SubsTech]

    Trivalent chromium deposits are micro-porous. Hexavalent chromium should be pre- or post-treated to form micro-crack structure. Lower drag-out. Trivalent chromium solutions have lower viscosity therefore the parts transfers less electrolyte to the rinse baths. Higher throwing power.

  • Chromium and its negative effects on the environment

    Chromium and its negative effects on the environment. Author: Charles Sneddon. This case study is part of a collection of pages developed by students in the 2012 introductory-level Geology and Human Health course in the Department of Earth Sciences, Montana State University.

  • Chromium Mining Stocks, Companies, Prices and News

    Comprehensive information on Chromium stocks, mining companies and prices. The latest Chromium investment information and news.

  • 4 Countries with the World's Highest Chromium Production

    Turkey maintained its chromium production in 2017, retaining its position as one of the world's top chromium producers. It put out 2.8 million MT, the same amount it produced in 2016.

  • Chromite - Wikipedia

    Ore deposits of chromite form as early magmatic differentiates. It is commonly associated with olivine, magnetite, ... The chromium extracted from chromite is used in chrome plating and alloying for production of corrosion resistant superalloys, nichrome, and stainless steel.

  • USGS Minerals Information: Chromium

    Chromium Open-File Report 2001-381 Chromium—A National Mineral Commodity Perspective Open-File Report 2007-1167 Chromium Life Cycle Study U.S. Bureau of Mines Information Circular 9411 Chromium—Makes Stainless Steel Stainless Fact Sheet 2010-3089 Cr, Cu, Mn, Mo, Ni, and Steel Commodity Price Influences Open-File Report 2007–1257

  • US20070227895A1 - Crystalline chromium deposit - Google ...

    A crystalline chromium deposit having a lattice parameter of 2.8895±0.0025 Å, and an article including the crystalline chromium deposit. An article including a crystalline chromium deposit, wherein the crystalline chromium deposit has a {111} preferred orientation.

  • Chromium Mining, Chromium Mine, Chromium Mines, Metal ...

    Chromium is mined as chromite (FeCr2O4) ore. About 2/5ths of the chromite ores and concentrates in the world are fashioned in South Africa, while Kazakhstan, India, Russia, and Turkey are also sizeable producers. Unexploited chromite deposits are plentiful, but geographically resolute in …

  • Chromite | Earth Sciences Museum | University of Waterloo

    Chromite is the main source of the metal chromium, a metal used to induce hardness, toughness and chemical resistance in steel. It was named after its chemical composition, chromium oxide. The mineral is brownish to black in colour with a dark brown streak.