Ironstone —  Republished // WIKI 2

Ironstone — Republished // WIKI 2

is a sedimentary rock, either deposited directly as a ferruginous sediment or created by chemical replacement, that contains a substantial proportion of an iron compound from which iron can be smelted commercially. This term is customarily restricted to hard coarsely banded, nonbanded, and noncherty sedimentary rocks of post-Precambrian age. The Precambrian deposits, which have a ...

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  • Synsedimentary formation of ooidal ironstone: An example ...

    Synsedimentary formation of ooidal ironstone: An example ...

    The sequence lies between Miocene – Lower Pliocene shell limestones and Upper Pliocene – Pleistocene sandy and clayey sediments and consists of horizontal ooidal beds composed mainly of goethite and X-ray amorphous Fe 3+-oxyhydroxides intercalated with siderite and/or rhodochrosite beds.

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  • Plinthite | mineral | Britannica

    Plinthite | mineral | Britannica

    Other articles where Plinthite is discussed: Plinthosol: …into concretions known as plinthite. The impenetrability of the hardened plinthite layer, as well as the fluctuating water table that produces it, restrict the use of these soils to grazing or forestry, although the hardened plinthite has value as subgrade material for roads or even as iron the…

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  • iron ore geological reports of sudan

    iron ore geological reports of sudan

    PDF Concentration of a Sudanese lowgrade iron . 01/07/2013 The iron deposit of the Northern State of Sudan, at Wadi Halfa, is a huge deposit, but is low in grade It assays 36% Fe and 48% silica The present study is an attempt to investigate the

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  • ironstone - Wiktionary

    ironstone - Wiktionary

    Etymology []. From iron +‎ stone.. Noun []. countable and uncountable, plural ironstones . Any of iron which is impure through the admixture of silica or clay.. 1815, Mungo Park, Travels in the Interior of Africa, Vol. II, Cassell: 1893, Chapter XXI, During my stay at Kamalia there was a smelting furnace at a short distance from the hut where I lodged, and the owner and his ...

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  • Ooidal ironstones in the Meso-Cenozoic sequences in ...

    Ooidal ironstones in the Meso-Cenozoic sequences in ...

    The Bakchar deposit develops in the south-eastern part of western Siberia 52°01′45″N 82°07′20″E situated 200 km northwest of Tomsk Fig. 1. The occurs as 150 km wide and about 2000 km long deposit in the West Siberian iron basin along eastern and south-eastern borders of the West Siberian Plate Fig. 1a.

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  • L. V. Kuleshevichs research works | Karelian Research ...

    L. V. Kuleshevichs research works | Karelian Research ...

    L. V. Kuleshevichs 14 research works with 25 citations and 140 reads, including: The Multi-Isotope Composition of Sulfur in Sulfides and Microfossils of the Mesoarchean Leksa Pyrite ...

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  • Ironstone : definition of Ironstone and synonyms of ...

    Ironstone : definition of Ironstone and synonyms of ...

    Sometimes hosts concretions opal gems. occurs in a variety of forms. The various forms of include siderite nodules deeply weathered saprolite, i.e. and ooidal ironstone. Uses as a source of iron. Ironstone, although widespread, is a limited source of iron Fe. Historically, most of British iron originated from but it is now rarely used for this …

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  • Banded iron formation Description, Occurrence, Origins ...

    Banded iron formation Description, Occurrence, Origins ...

    Banded iron formations also known as banded formations or BIFs are distinctive units of sedimentary rock consisting of alternating layers of iron oxides and iron-poor chert.They can be up to several hundred meters in thickness and extend laterally for several hundred kilometers. Almost all of these formations are of Precambrian age and are thought to record the oxygenation of the ...

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  • Ironstone Vineyards - Shop - Shop All

    Ironstone Vineyards - Shop - Shop All

    Whats Your Obsession? This Is Ours. Hints of nutmeg and cloves along with chocolate and vanilla beans give way to bursting flavors of blueberries, dark red fruits with hints of mint and chocolate.

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  • PDF Clay mineralogy in Bahariya area, Egypt ...

    PDF Clay mineralogy in Bahariya area, Egypt ...

    The ironstone occurrences in this area are either hosted in clastic rocks of the or associated with Eocene carbonate units.

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  • Ironstone - Infogalactic: the planetary knowledge core

    Ironstone - Infogalactic: the planetary knowledge core

    Sometimes ironstone hosts concretions or opal gems. Occurrence. Ironstone occurs in a variety of forms. The various forms of ironstone include siderite nodules deeply weathered saprolite, i.e. and ooidal ironstone . Uses Ironstone as a source of iron. Ironstone, although widespread, is a limited source of iron Fe. Historically, most of British iron originated from ironstone, but it is now rarely used for this …

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  • REPORT ON GEOLOGICAL RECONNAISSANCE, PROSPECTING ...

    REPORT ON GEOLOGICAL RECONNAISSANCE, PROSPECTING ...

    approximately 5 m wide, trending 120 degrees, was traced in outcrops for 4 km. In the area of the Pitch- Copper at Wolfe Lake the contains accessory, secondary silicate minerals in decreasing order of abundance: quartz, chlorite, actinolite or hornblende, and epidote. The

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  • Bahariya-Formation

    Bahariya-Formation

    of the two iron-bearing rock types in a same area offers an opportunity to better understanding the origin of deposits. The ironstones occur as thin crusts within Cenomanian clastic rocks Bahariya Formation and as big bodies …

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  • Brown Ironstone: Mineral information, data and localities.

    Brown Ironstone: Mineral information, data and localities.

    Brown mineral data, information about Brown , its properties and worldwide locations. ... ⓘ ⓘ ... Click for further information on this .? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species.

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  • XVII. The Occurrence of Iron Ore in Millstone Grit Lava ...

    XVII. The Occurrence of Iron Ore in Millstone Grit Lava ...

    In 1895 Mr. John Smith Trans. Geol. Soc., Glasgow, 10, 133, 1895, contributed a paper to this Society, describing a deposit of volcanic ash in Ayrshire, containing bands of . During the following twenty years there was practically nothing done in the way of further exploration of these deposits until the urgent demand for a supply of in this country led Mr. G. V. Wilson ...

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  • Ironstone Rocks - Ohio History Central

    Ironstone Rocks - Ohio History Central

    In Ohio, most occurs in the eastern part of the state. Although it is not as rich in iron as other substances, often is used as an for commercial production of iron. The mineral hematite is about 70% iron and makes the best for that metal. In contrast, less than half of is iron.

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  • PDF Phanerozoic Ooidal Ironstone Deposits – Generation ...

    PDF Phanerozoic Ooidal Ironstone Deposits – Generation ...

    This paper summarises Phanerozoic deposits worldwide, including Australian deposits such as the well-known channel iron deposits CIDs. Nearly 400 have been catalogued...

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