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sedimentary iron ore deposits

Origin of sedimentary hosted high-grade iron ore deposits

• From the 1840s to the 1960s more than 3 billion tonnes of iron ore were mined from sedimentary-hosted high grade iron ore deposits in Michigan, Minnesota and Ontario • This abundant source of iron ore coupled with new steelmaking processes helped fuel

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Facies types of sedimentary iron ore deposits and their ...

2012-10-24  Economic significance of the sedimentary iron ore deposits is shown. The most important types of these deposits are characterized and their genesis is considered. Special attention is given to the formation of goethite-chlorite-siderite ooliths, which represent the main component of marine iron ore deposits. Geochemical and mineralogical features of different types of iron ores are examined ...

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Deposits related to chemical sedimentation Sedimentary ...

Sedimentary iron deposits: Banded Iron Formation (BIF) Oolitic ferruginous deposits (e.g. Clinton ores, USA; Minnette ores; Alsace-Lorraine, France) Bog ores Iron carbonate beds (black band ores) Banded Iron Formation . Banded Iron Formation Synonyms: Taconite (Lake Superior district), itabirite (Brazil), jaspilite (Australia) 1 billion tons of iron ore is produced and consumed each year ...

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Mineral deposit - Iron deposits Britannica

Iron deposits By far the most important metal from an economic and technical point of view is iron. Sedimentary iron deposits, from which almost all iron is obtained, can therefore be viewed as one of the world’s great mineral treasures. There are two major types of deposit.

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SEDIMENTARY ORE DEPOSITS

SEDIMENTARY ORE DEPOSITS Commercial deposits of metals come in a seemingly endless variety formed by many different geological processes.

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Iron Ore: Sedimentary Rock - Pictures, Definition More

Earth's most important iron ore deposits are found in sedimentary rocks. They formed from chemical reactions that combined iron and oxygen in marine and fresh waters. The two most important minerals in these deposits are iron oxides: hematite (Fe 2 O 3) and magnetite (Fe 3 O 4).

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Deposits related to chemical sedimentation Sedimentary ...

(Bog Iron and ironstone deposits served for a long time as the main source of iron and were the base for the development of the Iron Age and for the beginning of industrialisation of Europe and N-America!)

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Facies types of sedimentary iron ore deposits and their ...

2012-10-24  Economic significance of the sedimentary iron ore deposits is shown. The most important types of these deposits are characterized and their genesis is considered. Special attention is given to the formation of goethite-chlorite-siderite ooliths, which represent the main component of marine iron ore deposits. Geochemical and mineralogical features of different types of iron ores are examined ...

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SEDIMENTARY ORE DEPOSITS

MUDSTONES AND MINING. From this group of deposits, those of Cu, Mn, and Pb-Zn are hosted by or occur in close association with mudstones (shales). These rocks present special problems in mine developmen, from incomplete core recovery to poor site trafficability to highwall instability.

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Scientists give new clues to find iron ore deposits ...

2020-09-27  Iron oxide-apatite deposits are formed from a magma-like liquid dominated by calcium carbonate and sulphate “The origins and chemical properties of

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Minerals Special Issue : Sedimentary Ore Deposits ...

These deposits include (but are not restricted to), sedimentary ores of iron and manganese, sedimentary-exhalative massive sulphide deposits, metalliferous black shales, coal, placers and laterites. Improved understanding of the origin of sedimentary ore deposits through time, not only plays a key role in terms of exploration for new resources and optimum exploitation of known ones, but also ...

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On the genesis problem of thermal sedimentary iron ore ...

The author unites deposits, the material of which had been supplied as thermal solutions and deposited predominantly on the sea floor, under the name of thermal-sedimentary. It is assumed that the iron of such deposits had been extracted as Fe2+ from rocks by waters heated by the subterranian heat. The ferruginous precipitates producing thermal-sedimentary iron ores are formed, in the author's ...

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Labrador Iron Mines Holdings Limited :: Deposit Types

The Labrador iron deposits are composed of iron formations of the Lake Superior-type. The Lake Superior-type iron formation consists of banded sedimentary rocks composed principally of bands of iron oxides, magnetite and hematite within quartz (chert)-rich rock, with variable amounts of silicate, carbonate and sulphide lithofacies.

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Essay on Sedimentary processes of ore-formation

Accumulation of organic matter whether due to chemical reactions or due to as such transportation and deposition by the geologic-agents give rise to deposits like bog iron ore, coal, phosphatic, siliceous as well as calcareous deposits of chalk, fossiliferous limestones etc.

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Sedimentary Ore Deposits ~ Mining Geology

Sedimentary deposits are formed through the erosion, transportation, and redeposition of minerals that can survive the rigors of transportation. The most common is silica, which forms a number of materials, including silica sand, sand and gravel, and flint.

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Deposits related to chemical sedimentation Sedimentary ...

(Bog Iron and ironstone deposits served for a long time as the main source of iron and were the base for the development of the Iron Age and for the beginning of industrialisation of Europe and N-America!)

More

Facies types of sedimentary iron ore deposits and their ...

2012-10-24  Economic significance of the sedimentary iron ore deposits is shown. The most important types of these deposits are characterized and their genesis is considered. Special attention is given to the formation of goethite-chlorite-siderite ooliths, which represent the

More

Ore Deposits Formed by Sedimentation

Ore Deposits Formed by Sedimentation The process of sedimentation results in the formation of some important mineral deposits viz., iron, manganese, copper, phosphate, coal, oil shale, carbonates, cement rock, diatomaceous earths, bentonite, fuller�s earth magnesite, sulfur and uranium-vanadium deposits.

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Minerals Special Issue : Sedimentary Ore Deposits ...

These deposits include (but are not restricted to), sedimentary ores of iron and manganese, sedimentary-exhalative massive sulphide deposits, metalliferous black shales, coal, placers and laterites. Improved understanding of the origin of sedimentary ore deposits through time, not only plays a key role in terms of exploration for new resources and optimum exploitation of known ones, but also ...

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Iron Ore ~ Learning Geology

The iron ore deposits are found in sedimentary rocks. They are formed by the chemical reaction of iron and oxygen mixed in the marine and fresh water. The important iron oxides in these deposits are hematite and magnetite. These are ores from where iron is extracted.

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On the genesis problem of thermal sedimentary iron ore ...

The author unites deposits, the material of which had been supplied as thermal solutions and deposited predominantly on the sea floor, under the name of thermal-sedimentary. It is assumed that the iron of such deposits had been extracted as Fe2+ from rocks by waters heated by the subterranian heat. The ferruginous precipitates producing thermal-sedimentary iron ores are formed, in the author's ...

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Geology, Prospecting and Exploration for Iron Ore Deposits ...

2015-04-09  Iron ore deposits are distributed in different regions of the world under varied geological conditions and in different geological formations. The largest ore concentration is found in banded sedimentary iron formations of Precambrian age. These formations constitute the bulk of iron ore resources of the world.

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Mineral Ore Deposits: Meaning, Origin and Types Geology

Sedimentary deposits of iron oxides and hydrous aluminum oxide are of this type. In other cases, the ore deposits (or more precisely ore minerals) may be present in an enclosing rock, called the country rock or the host rock. In such cases, the host rock itself is removed in the first stage of mining.

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Labrador Iron Mines Holdings Limited :: Deposit Types

The Labrador iron deposits are composed of iron formations of the Lake Superior-type. The Lake Superior-type iron formation consists of banded sedimentary rocks composed principally of bands of iron oxides, magnetite and hematite within quartz (chert)-rich rock, with variable amounts of silicate, carbonate and sulphide lithofacies.

More

Sedimentary Ore Deposits ~ Mining Geology

Sedimentary deposits are formed through the erosion, transportation, and redeposition of minerals that can survive the rigors of transportation. The most common is silica, which forms a number of materials, including silica sand, sand and gravel, and flint.

More

Facies types of sedimentary iron ore deposits and their ...

2012-10-24  Economic significance of the sedimentary iron ore deposits is shown. The most important types of these deposits are characterized and their genesis is considered. Special attention is given to the formation of goethite-chlorite-siderite ooliths, which represent the

More

Ore Deposits Formed by Sedimentation

Ore Deposits Formed by Sedimentation The process of sedimentation results in the formation of some important mineral deposits viz., iron, manganese, copper, phosphate, coal, oil shale, carbonates, cement rock, diatomaceous earths, bentonite, fuller�s earth magnesite, sulfur and uranium-vanadium deposits.

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Minerals Special Issue : Sedimentary Ore Deposits ...

This Special Issue of Minerals, entitled “Sedimentary Ore Deposits: Origin, Exploitation, Paleoenvironmental Significance”, is dedicated to those metalliferous ore deposits that owe their origin to (a combination of) marine and terrestrial sedimentary processes (chemical, biochemical, organic, detrital), as well as metal enrichment processes that typify the supergene weathering environment.

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On the genesis problem of thermal sedimentary iron ore ...

The author unites deposits, the material of which had been supplied as thermal solutions and deposited predominantly on the sea floor, under the name of thermal-sedimentary. It is assumed that the iron of such deposits had been extracted as Fe2+ from rocks by waters heated by the subterranian heat. The ferruginous precipitates producing thermal-sedimentary iron ores are formed, in the author's ...

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SEDIMENTARY AND DIAGENETIc MINERAL DEPOSITS: A BASIN ...

sand and gravel), with large credits from iron, gold, phos­ phate, salts, gems, and many other commodities. In contrast, such deposits were addressed by only about 10 percent of Economic Geology articles in the last year. The purpose of this volume, and of the short course that prompted it, is to provide economic geologists with up-to­ date information on sedimentary process and basin ...

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Morphology of ore deposits and their relations with host rocks

Sedimentary ore deposits are roughly tabular, most others occur in a variety of forms.

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Algoma-type Iron Formation - Mineral Deposit Profiles, B.C ...

DEPOSIT FORM: Iron ore deposits are sedimentary sequences commonly from 30 to 100 m thick, and several kilometres in strike length. In most economic deposits, isoclinal folding or thrust faulting have produced thickened sequences of iron-formation. STRUCTURE/TEXTURE: Micro-banding, bedding and penecontemporaneous deformation features of the hydroplastic sediment, such as slump folds and

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Distinguishing Ore Deposit Type and Barren Sedimentary ...

Specifically, we used LA-ICP-MS pyrite trace element data and Random Forests, an ensemble machine learning supervised classifier, to distinguish barren sedimentary pyrite and five ore deposit categories: iron oxide copper-gold (IOCG), orogenic Au, porphyry Cu, sedimentary exhalative (SEDEX), and volcanic-hosted massive sulfide (VHMS) deposits.

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ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONS K.G ...

Ore deposits are crustal concentrations of useful elements that can be exploited at a profit. Like all crustal rocks, they consist of minerals formed by geological processes. There are four basic geological requirements for any ore deposit to form (Figure 1): - i) a source for the ore components (metals and ligands); ii) a mechanism that either transports these components to the ore deposit ...

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Sedimentary Manganese - Mineral Deposit Profiles, B.C ...

ORE CONTROLS: Sedimentary manganese deposits formed along the margins of stratified basins where the shallow oxygenated water and deeper anoxic water interface impinged on shelf sediments. They were deposited at the intersection of an oxidation-reduction interface with platformal sediments. Sites protected from clastic sedimentation within transgressive sequences are most favourable for ...

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