what is the economical use of banded iron formation

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  • Banded Iron Formation

    Banded Iron Formation Banded iron formation or BIF is a chemical sediment, typically thin-bedded or laminated with gt 15 iron of sedimentary origin BIF has a very distinct distribution with time see Figure 932 in Chapter 9 It is found in minor amounts in the early Archean and in large amounts in the late Archean, appears again around 19 ....

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  • Banded Iron Formations Encyclopedia

    Banded iron formations have greater than 15 sedimentary iron content Banded iron formations are of economic interest as they host the world s largest iron ore deposits and many gold deposits Algoma-type banded iron formations were deposited as chemical sediments along with other sedimentary rocks such as greywacke and shale and volcanics ....

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  • Banded iron formation Types and Facts Monuments

    The types of Banded iron formation include Algoma-type , Lake Superior-type, Superior-type and Taconite Depending upon Banded iron formation Texture, it is divided into typ Here, you will get to know about Banded iron formation types, interesting facts, features of Banded iron formation, its monuments and fossils...

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  • Banded iron formation

    The formations are abundant around the time of the great oxygenation event, 2,400 million years ago , and become less common after 1,800 mya with evidence pointing to intermittent low levels of free atmospheric oxygen new banded iron formations formed that may be ,...

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  • Banded iron formation Uses Medical Architecture

    Banded iron formation uses in construction industry include As dimension stone, Used for flooring, stair treads, borders and window sills Banded iron formation rock is not yet used in the medical industry Some types of rocks have exceptional properties and can be used in medical industry...

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  • TABLE DR1 PRECAMBRIAN SUPERIOR

    Included here within Superior-type BIF and Rapitan-type banded iron formation are granular iron formation and non-banded ironstone, respectively Algoma-type iron formation, which occurs in or is closely associated with volumetrically abundant metavolcanic rocks 1, 2, 3 , is excluded from the compilation because this generally...

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  • Geology Test 3 L 11 Flashcards Quizlet

    banded iron formations special type of sedimentary ore deposit, largest source of iron on earth, structure consists of repeated thin layers of iron oxides, either magnetite or hematite, alternating with bands of iron-poor shale and chert, can run for tens of km...

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  • Banded Iron Formation

    The spark to put together this volume on banded iron formation BIF -related high-grade iron ore was born in 2005 during a steamy night in Carajás where the iron research group from the Universidade Federal Minas Gerais, Vale geologists, Carlos Rosiére and Steffen Hagemann, were hotly debating the hypogene alteration genesis for the high-grade, jaspilite-hosted Serra Norte iron ore deposits...

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  • Exam 2 Review Flashcards Quizlet

    11 Why do banded iron formation not form today? a There is too much free oxygen in the air b The oceans are less acidic because there is less atmospheric CO2 c There is less iron on the surface d Banded iron formation are deposited in modern settings e The earth is not warm enough to deposit banded iron formations...

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  • REVIEW SHEET FOR HISTORICAL GEOLOGY

    BANDED IRON FORMATIONS AND REDBEDS AND THEIR SIGNIFICANCE The following text was taken from The Earth System by Lee R Krump, James F Kasting, and Robert G Crane, Prentice Hall, 1999 This is a very good, if somewhat technical source of information Banded Iron-Formations...

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  • THE NATURE AND ECONOMIC SIGNIFICANCE OF BANDED ,

    banded iron formations BIF through parts of the strati-graphic sequence In the Matchless Amphibolite Mem-ber of the Kuiseb Formation, iron formations magnetite quartzite are closely related to massive sulphide depos-its, such as at the Matchless and Otjihase mines, but the economic potential of BIF elsewhere is not known This...

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  • Banded iron formation Goldman Meadows Formation ,

    Dec 10, 2016 0183 32 Banded iron formation from the Precambrian of Wyoming, USA 109 cm across at its widest Banded iron formations, or BIFs, are unusual, dense sedimentary rocks consisting of alternating layers of iron-rich oxides and iron-rich silicat Most BIFs are Proterozoic in age although some are ....

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  • Banded iron formation

    Aug 25, 2016 0183 32 Banded iron formations are distinctive units of sedimentary rock that are almost always of Precambrian ageA typical BIF consists of repeated, thin layers of silver to black iron oxides, either ....

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  • How did banded iron formation form? What happened at the ,

    Apr 03, 2011 0183 32 Banded iron formations have greater than 15 sedimentary iron content Banded iron formations are of economic interest as they host the world s largest iron ore ,...

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  • Banded iron formation News and Updates from The Economic ,

    Oct 03, 2018 0183 32 Banded iron formation News and Updates from The Economictim Banded iron formation News and Updates from The Economictim SECTIONS ET APPS ET Android App ET iPhone App ET iPad App ET Wealth Android App ET Blackberry App ET Markets Android App ET Markets iPhone App ET Money Android App...

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  • What do banded iron formation deposits reveal about the ,

    What do banded iron formation deposits reveal about the evolution of the atmosphere? Submitted by Bosiljka Glumac, Smith College How to use this question in the classroom In my introductory-level geology courses BIFs are the focus of one of the topics on the evolution of the atmosphere...

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  • Banded Iron Formation BIF

    Banded Iron Formation BIF Banded Iron Formation BIF - chemical sediments - Fe rich 20 - 40 wt -SiO 2 rich 40 - 60 wt -hematite, magnetite, siderite, chert main minerals - laminated on various scales - ferric hydroxide, amorphous silica, greenalite siderite primary precipitat...

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  • Banded iron formation

    Banded iron formations or BIFs are a distinctive type of rock often found in Precambrian sedimentary rocks They consist of repeated thin layers of iron oxides, either magnetite Fe 3 O 4 or hematite Fe 2 O 3 , alternating with bands of iron-poor shale and chert Some of the oldest known rock formations, formed over 3,700 million years ago mya , include banded iron layers...

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  • Banded ironstone formation theory challenges current thinking

    Mar 03, 2015 0183 32 A UWA geologist has proposed a hypothesis which threatens to overturn conventional notions of the way Banded Ironstone Formations BIF first evolved BIF is ,...

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  • Targeting iron ore in Banded Iron Formation using ASTER ,

    Aug 22, 2012 0183 32 Spectral data sets, such as those gathered from ASTER, can be used to map mineral abundance and chemistry in outcrop In this example, we use ,...

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  • A new explanation for banded iron formations BIFs

    Mar 27, 2015 0183 32 The main source for iron and steel has for more than half a century been Precambrian rock characterised by intricate interlayering of silica- and iron oxide-rich sediments known as banded iron formations or BIFs They always appear in what were shallow-water parts of Precambrian sedimentary basins Although much the same kind of material turns up,...

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  • Paleoecological Significance of the Banded Iron

    Banded iron-formation BIF is rare in rocks younger than about 2 aeons years X 10 9 It records a major episode of chemical iron sedimentation, however, at about 2 to 21 aeons, just before the deposition of the oldest oxidized terrestrial sediments The great iron-formations ,...

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  • The origin of banding in banded iron formations BIF ,

    Apr 16, 2013 0183 32 Banded iron formations BIF and iron ore are globally important resources of iron that have very distinctive textur Well-preserved BIF contain iron-rich bands consisting of iron oxides eg, hematite, magnetite , iron silicates eg, stilpnomelane , and iron oxyhydroxides eg, greenalite , that are inter-layered with siliceous chert bands...

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  • Banded Iron Formations BIF

    Banded iron formations also known as banded ironstone formations or BIFs are distinctive units of sedimentary rock that are almost always of Precambrian age Most of the major iron deposits worldwide occur in rocks called banded iron formations or BIFs for short , which are finely layered sedimentary rocks composed of alternating chert a form of quartz and iron oxide bands...

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  • BANDED IRON FORMATION

    Banded Iron Formation also known as BIF, or as taconite in North America is a term that is applied to a very unique sedimentary rock of biochemical origin These rocks are unique in their make up, unique in their age and unique in their origins They are found all over the world, but only in certain areas of all the major continents...

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  • Banded Iron Formation

    Banded iron formations BIFs are sedimentary rocks, characterized by the presence of alternating layers of iron-rich minerals - known as magnetite - and amorphous silica-rich rocks - known as cherts Each layer is relatively thin with varying levels of thickness, measuring from a millimeter up to ....

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  • Banded Iron Formation

    Banded Iron Formation Banded Iron formations occur in Proterozoic rocks, ranging in age from 18 to 25 billion years old They are composed of alternating layers of iron-rich material commonly magnetite and silica chert Each layer is relatively thin, varying in ,...

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  • Historical Geology/Banded iron formations

    Banded iron formations, or BIFs are sedimentary rocks consisting of alternating bands iron-rich sediment typically hematite, Fe 2 O 3, and magnetite, Fe 3 O 4 and iron-poor sediment, typically chert the size of the bands ranges from less than a millimeter to more than a meter in thickness...

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  • Banded Iron Formation Western Australian Museum

    Banded iron formations appear to have been deposited in areas of the ocean where seawater with high contents of dissolved iron and silica came into contact with water containing higher amounts of oxygen, which resulted in the precipitation of hematite and chert microcrystalline quartz...

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  • Palaeoproterozoic banded iron formation

    Banded iron formation-hosted high-grade hematite ore deposits have, for many decades, provided by far the bulk of all iron ore mined annually 31 Bt total global iron ore mined in 2014 USGS, 2015...

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