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Chromite mining The Oregon Encyclopedia

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 States government supported domestic production with price supports and strategic stockpiling programs.

Chromite mining oregonencyclopedia

Chromite mining By Rene Casteran 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. The strategic mineral concept was created during World War I and became law just prior to World War II

Chromite: The mineral Chromite information and pictures

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.

Chromite mining pollution, environmental impact, toxicity

Sep 24, 2020 Chromite mining activities are indispensable for production of goods and services. Sukinda is a major mining site of Odisha, India, polluted by chromium, which is highly toxic in its hexavalent form. The Sukinda valley is a rich source of chromites, amounting to almost 95% of Cr available in India, and is the fourth most polluted site worldwide.

Case Study: Chromite mining and processing

For more information on Case Studies, please contact us at [email protected] Visit our website for more from this series. Case Study: Chromite mining and processing April 2015 About case studies The Environmental and Occupational Health team provides scientific and technical advice and support to the health care system and the Government of Ontario.

Chromite: Mineral information, data and localities.

"Chromite" is commonly used for any Cr-rich mineral of the spinel group, particularly for the chromite-magnesiochromite series, and much of the mineral referred to as "chromite" in geological and petrological papers and mining statistics is magnesiochromite. The Fe-dominant species chromite itself can be FOUND, although uncommonly, in many

Chromite: The only mineral ore of chromium metal

Stratiform, Podiform, and Beach Sands. Small amounts of chromite are found in many types of rock. However, chromite deposits that are large enough for mining are generally found in: 1) stratiform deposits (large masses of igneous rock such as norite or peridotite that slowly crystallized from subsurface magma); 2) podiform deposits (serpentines and other metamorphic rocks derived from the

(PDF) Chromite ResearchGate

applicatio n of the open cast mining proc ess since 1950 is a good sa mple of mining wast es of chromite ore. Mishra and Sahu (2 013) reported that th e environm ental impacts of chro mite mining

Chromite mining oregonencyclopedia

Chromite mining By Rene Casteran 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. The strategic mineral concept was created during World War I and became law just prior to World War II

Chromite: Mineral information, data and localities.

"Chromite" is commonly used for any Cr-rich mineral of the spinel group, particularly for the chromite-magnesiochromite series, and much of the mineral referred to as "chromite" in geological and petrological papers and mining statistics is magnesiochromite. The Fe-dominant species chromite itself can be FOUND, although uncommonly, in many

Chromite: The only mineral ore of chromium metal

Stratiform, Podiform, and Beach Sands. Small amounts of chromite are found in many types of rock. However, chromite deposits that are large enough for mining are generally found in: 1) stratiform deposits (large masses of igneous rock such as norite or peridotite that slowly crystallized from subsurface magma); 2) podiform deposits (serpentines and other metamorphic rocks derived from the

Chromite Earth Sciences Museum University of Waterloo

As well, since chromite is a very durable mineral, it also occurs in the sands of a few places. Chrome mining in Canada (The Ring of Fire): In April 2010 the Government of Ontario announced that they would be opening up a large chromite deposit to development in northern Ontario. The area that is to be mined is known as the “Ring of Fire”.

Chromite Wikipedia

Chromite is a mineral that is an iron chromium oxide.It has a chemical formula of FeCr 2 O 4.It is an oxide mineral belonging to the spinel group.The element magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr 2 O 4). A substitution of the element aluminium can also occur, leading to hercynite (FeAl 2 O 4).

(PDF) An overview of chromite mining in Sukinda valley in

The human cost and the ecological cost of chromite mining is yet to be acknowledged, leave alone any kind of mediation by government or non state actors. How green was my valley! Ranjana Padhi & Lambodar Mohanto are researchers. This article is based on observations in the area, conversations with local people and studies done on Sukinda.

Chromite ScienceDirect

Jan 01, 2016 Commercial chromite deposits that are large enough for mining are generally found in: (1) stratiform deposits, and (2) podiform deposits (Murthy et al., 2011, Papp and Lipin, 2001a).Other sources of chromite are laterites that are weathering products of peridotite. Laterites are more widely known as sources of nickel and cobalt ().Laterites have historically been a minor source of chromite

(PDF) Chromite ResearchGate

applicatio n of the open cast mining proc ess since 1950 is a good sa mple of mining wast es of chromite ore. Mishra and Sahu (2 013) reported that th e environm ental impacts of chro mite mining

Chromium Statistics and Information USGS

Chromium (Cr) has a wide range of uses in metals, chemicals, and refractories. It is one of the Nation's most important strategic and critical materials. Chromium use in iron, steel, and nonferrous alloys enhances hardenability and resistance to corrosion and oxidation. The use of chromium to produce stainless steel and nonferrous alloys are two of its more important

Seeking information about mining leases in Cali

Dec 01, 2020 Hello, Does anyone know anything about mining leases in California? An ancestor of mine obtained land under the Homestead Act in Siskiyou County, CA. I recently read that chromite deposits had been found on his land (c. 1920) and that several men had obtained a lease for mining it. At this point, I'm just looking for an explanation of the process.

Minerals.net Mineral News Chromite Mining History in

This sample of chromite, also know as Iron Chromate (FeCr 2 O 4) is from a lens of ore in the Arundel Corporations's Delight Serpentine Quarry, located in Reisterstown, Maryland.The Calhoun chromite mine of the Tyson Mining Company was located on the quarry site and last operated around 1880.

Move to cancel dormant chromite mining licenses

The Public Authority for Mining (PAM) is weighing a decision to either renew or cancel dozens of chromite mining licenses that have remained “inactive” for inordinately long periods of time without being developed or exploited by their licensees.

Chromium Minerals Education Coalition

The mining method used for extracting chromite depends greatly on the characteristics of the deposit. These characteristics include whether it is stratiform or podiform, high grade or low grade, subsurface or near surface, or massive or disseminated. Because surface mining typically is less expensive than underground mining, it is preferred

Chromite an overview ScienceDirect Topics

Mining of chromite is carried out by open-pit and underground mining. Whereas open-pit mining is generally applied to podiform deposits, underground mining is applied to stratiform deposits. Chromite ore is mined in over 20 countries, but about 80% of production originates from four countries: South Africa, India, Kazakhstan, and Turkey

Chromite mining oregonencyclopedia

Chromite mining By Rene Casteran 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. The strategic mineral concept was created during World War I and became law just prior to World War II

Chromite: Mineral information, data and localities.

"Chromite" is commonly used for any Cr-rich mineral of the spinel group, particularly for the chromite-magnesiochromite series, and much of the mineral referred to as "chromite" in geological and petrological papers and mining statistics is magnesiochromite. The Fe-dominant species chromite itself can be FOUND, although uncommonly, in many

Chromium Minerals Education Coalition

The mining method used for extracting chromite depends greatly on the characteristics of the deposit. These characteristics include whether it is stratiform or podiform, high grade or low grade, subsurface or near surface, or massive or disseminated. Because surface mining typically is less expensive than underground mining, it is preferred

(PDF) An overview of chromite mining in Sukinda valley in

The human cost and the ecological cost of chromite mining is yet to be acknowledged, leave alone any kind of mediation by government or non state actors. How green was my valley! Ranjana Padhi & Lambodar Mohanto are researchers. This article is based on observations in the area, conversations with local people and studies done on Sukinda.

Chromite an overview ScienceDirect Topics

Mining of chromite is carried out by open-pit and underground mining. Whereas open-pit mining is generally applied to podiform deposits, underground mining is applied to stratiform deposits. Chromite ore is mined in over 20 countries, but about 80% of production originates from four countries: South Africa, India, Kazakhstan, and Turkey

Minerals.net Mineral News Chromite Mining History in

This sample of chromite, also know as Iron Chromate (FeCr 2 O 4) is from a lens of ore in the Arundel Corporations's Delight Serpentine Quarry, located in Reisterstown, Maryland.The Calhoun chromite mine of the Tyson Mining Company was located on the quarry site and last operated around 1880.

Modernising chromite mining DAWN.COM

Aug 25, 2008 Chromite mining has not been systematic but random and totally disorganised. It is mined by both open pit and underground methods. In Muslimbagh, Ras Koh Range and Wad areas, chromite is mostly

Seeking information about mining leases in Cali

Dec 01, 2020 Hello, Does anyone know anything about mining leases in California? An ancestor of mine obtained land under the Homestead Act in Siskiyou County, CA. I recently read that chromite deposits had been found on his land (c. 1920) and that several men had obtained a lease for mining it. At this point, I'm just looking for an explanation of the process.

Move to cancel dormant chromite mining licenses

The Public Authority for Mining (PAM) is weighing a decision to either renew or cancel dozens of chromite mining licenses that have remained “inactive” for inordinately long periods of time without being developed or exploited by their licensees.

KWG Resources Inc. (KWG: CSE) Ring of Fire News

The Ring of Fire is a large nickel and chromite mining deposit located more than 600 kilometres northwest of Timmins in the James Bay Lowlands near Webequie and McFaulds Lake. KWG owns large mining properties in the region. Company CEO Frank Smeenk was pleased with the recent patent announcement, made in December.

Potential Toxic Effects of Chromium, Chromite Mining and

underground chromite mine and ore processing facility in the Ring of Fire and a ferrochrome production facility (includes a chromite smelter) to be located somewhere in Ontario are currently undergoing economic feasibility studies and environmental assessments. Other companies also have plans for mining chromite and other metals in the same area.

(PDF) Statistical analysis in Turkish chromite mining

The aim of this study is the determination of the lower, upper and central control limits of chromite concentrates obtained from Mikromaden Co., Akmetal Co. and Pinar Mining Co. in the Aladag

Global Chromite and Chrome Ore Market with Top Companies

Mar 30, 2021 Global Chromite and Chrome Ore Market with Top Companies Growth (2021-2026) : Eurasian Resources Group, Tata Steel, Outokumpu, Samancor, Odisha Mining Corporation apexresearch March 30, 2021 5

Chromite Exploration Spectral Evolution

Chromite is the only ore for chromium, a hard corrosion resistant metal that can be polished, has a high melting point and is used primarily as a coating/finish for stainless steel. Its yellow color is also used in pigments. Chromite is part of the spinel group of minerals.