bandediron formation In mineral deposit Iron deposits Australia studied deposits in the Hamersley Basin and found that individual thin layers could be traced for more than 100 kilometres Such continuity suggests that evaporation played a major role in precipitating both the iron minerals and the silica...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other beneficiation equipment; Powder Grinding Plant, rotary dryer, briquette machine, mining, metallurgy and other related equipment. which can crush all kinds of metal and non-metallic ore, also can be dry grinding and wet grinding.If you are interested in our products or want to visit the nearby production site, you can click the button below to consult us.Welcome to our factory to test machine for free!
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bandediron formation In mineral deposit Iron deposits Australia studied deposits in the Hamersley Basin and found that individual thin layers could be traced for more than 100 kilometres Such continuity suggests that evaporation played a major role in precipitating both the iron minerals and the silica
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Marra Mamba Iron Formation and the upper 225 m of the underlying Jeerinah Formation The banded ironformations of the Hamersley Basin have been studied in great detail with respect to their stratigraphy chemical composition and sedimentary and diagenetic structural features eg Trendall and Blockley 1970 It is the purpose of this
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Other structures in the banded ironformation include pods macules and small spheroidal nodules Despite modification by metamorphic and deformation processes which among other effects have caused thinning of mesobands all the structures can readily be equated with those in the Hamersley Basin ironformations
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Beginning at 38 Ga Isua West Greenland they are part of Archean cratons and range in age from about 35 until 25 Ga Their overall volume reaches a maximum at about 25 Ga ironformations in the Hamersley Basin of Western Australia and they disappear from the geologic record at about 18 Ga only to reappear between 08 and 06 Ga
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The Hamersley Group which is divided into eight formations has a general thickness of ∼25 km and is characterised by major banded iron‐formation BIF units Reported here are SHRIMP U‐Pb zircon results 406 grain analyses from 13 samples taken from the Hamersley Group and near the top of the underlying Fortescue Group
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Banded iron formations BIFs are Precambrian chemical sedimentary rocks deposited in marine environments James 1954 1966 There are two major types of iron formation defined on the basis of their size and lithologic associations Gross 1965 Algomatype iron formations are associated with volcanogenic rocks
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Banded Iron Formation Banded iron formation or BIF is a chemical sediment typically thinbedded or laminated with 15 iron of sedimentary origin Figure 86 BIF has a very distinct distribution with time Figure 825 It is found in minor amounts in the early Archean and in large amounts in the late Archean appears again around 185 Ga and then disappears from the geologic record for 1 Gyr appearing
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Figure 1 A Wittenoom specimen DGW001 of fossil jellyfish exposed along a bedding plane in the Dale Gorge Member Banded Iron Formation The variation in body exposure is due to slight variation in burial eg settling in the gel sediment andor stage of the jellyfish pulsing at time of entombment
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Hamersley Basin WA Geol Surv Mem 2 119–43 The ores derived from banded ironformation in situ in the Hamersley Iron Province represent a series of events probably related to the time
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Mineral deposit Mineral deposit 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 The first and by far the most important is banded iron formations BIFs so
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