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– 634 . Daliran , F. 2002 : Kiruna-type iron oxide-apatite ores and apatitites of Bafq district, Iran, with an emphasis on the REE geochemistry of their

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fluorite grains and their associations 4.2.6 Iron oxide minerals (Jarosite) It is a hydrous sulfate mineral with potassium and iron; it is formed in the ore deposits by the oxidation of iron sulfides. The studied jarosite grains have yellowish to reddish

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Abstract  

Reactions in aqueous-alcoholic solution between diphenyl-4-amine barium sulphonate (Ba-DAS—anionic surfactant) and the hydrated sulphates of Fe(III) and Fe(II) ions and their use to ovtain iron oxides are described here. The formation of Fe(II) complexes was reached by using an excess of Ba-DAS, in absence of light under inert atmosphere. The complexes achieved Fe2[(C12H10NO3S)4]·9H2O and Fe3[(C12H10NO3S)6]·12H2O were characterized by TG/DTG and IR, UV-VIS and 57Fe-Mössbauer analyses.

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Agrokémia és Talajtan
Authors: János Kalmár, László Kuti, János Kátai, Renáta Figler, and György Füleky

. Schwertmann , U. , Cornel , R.M. 2000 : Iron Oxides in Field and in the Laboratory . Preparation and characterisation. IId. ed. 67 – 91 .— Wiley VHC. , Weinheim, New York, Brisbaine, Singapore, Toronto

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. Wu , C. 2008 : Bayan Obo controversy: carbonatites versus iron oxide-Cu-Au-(REE-U) . – Resource Geology 58/4 , pp. 348 – 354 .

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-coated superparamagnetic iron oxide nanoparticles in a capillary-based droplet reactor ” Kumar , K. , Nightingale , A. M. , Krishnadasan , S. H. , Kamaly , N. , Wylenzinska-Arridge , M. , Zeissler , K. , Branford , W. R. , Ware , E. , deMello , A. J

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nanocomposite was covered by thin passive layer with very good adherence to the composite substrate, containing besides iron oxides additionally chromium oxides, whereas in the thick, porous layer of scale, characterized by poor adhesion to 316L steel, hematite

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J. , Banerjee , S. , Mohapatra , S. K. , Smith , Y. R. , Misra M. ( 2011 ) Bismuth iron oxide nanoparticles as photocatalyst for solar hydrogen generation from water . Journal of Fundamentals of Renewable Energy and

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, hydrogenated castor oil, iron oxides, lactose, polyethylene glycol, talc, and titanium dioxide. Benazepril hydrochloride and hydrochlorothiazide coformulated brand is not available in the Egyptian market; therefore, laboratory-prepared tablets were used [ 30

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Central European Geology
Authors: Ildikó Gyollai, Ákos Kereszturi, and Elias Chatzitheodoridis

whitlockite), and sulfides (pyrrhotite and pyrite) are identified as major magmatic minerals, iron oxides (goethite or hematite) as secondary alteration products; the alteration products could also have been terrestrial origin. The Zagami meteorite is observed

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