Iron isotope geochemistry of jarosite
WebJarosite can be an important scavenger for arsenic (As) and antimony (Sb) in acid mine drainage (AMD) and acid sulfate soil (ASS) environments. When subjected to reducing … WebAug 3, 2024 · Recent Fe isotope analyses of iron meteorites found δ57/54Fe to be heavier than chondritic by approximately 0.1 to 0.2 ‰ for most meteorites, indicating that a common parent body process was responsible. However, the mechanism for this fractionation remains poorly understood.
Iron isotope geochemistry of jarosite
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WebAug 12, 2015 · Iron is an indicator for soil fertility and the usability of an area for cultivating crops. Remote sensing is the only suitable tool for surveying large areas at a high temporal and spatial interval, yet a relative high spectral resolution is needed for mapping iron contents with reflectance data. Sentinel-2 has several bands that cover the 0.9 μm iron … WebApr 7, 2024 · Elliptical sulfate-rich features, stained red by the presence of iron oxides, are set within permafrost and carbonate rock at Borup Fiord Pass in the Canadian High Arctic. These features, which vary in diameter from ∼0.5 to 3 m, exhibit the co-localization of sulfur (S) and iron (Fe) minerals, with S and Fe both preserved in multiple oxidation states. …
WebThe Zn isotope fingerprint is widely used as a proxy of various environmental geochemical processes, so it is crucial to determine which are the mechanisms responsible for isotopic fractionation. Iron (Fe) (hydr)oxides greatly control the cycling and fate and thus isotope fractionation factors of Zn in terrestrial environments. WebDec 15, 2024 · The geochemistry of the elements, isotope geochemistry and chronology, and the data derived from the analysis on Au-W deposit in the area are compared with the geologic features of the regional metallogenic rock. The results indicate that Ziyunshan granite is an irregular shaped complex of late Indosinian by multi-stage intrusion.
WebThis may be explained by dissolution of hydronium jarosite and reprecipitation of natrojarosite, coupled H 3 O + - Na + exchange, or jarosite decomposition, although no Fe-oxyhydroxide phases were identified from XRD. WebJan 1, 2000 · Stable isotope studies of sulfate minerals are especially useful for unraveling the geochemical history of geological systems. All sulfate minerals can yield sulfur and oxygen isotope data. ... and more complex sulfate minerals, such as alunite and jarosite also yield oxygen and hydrogen isotope data from hydroxyl sites. Applications of stable ...
WebJarosite is a basic hydrous sulfate of potassium and ferric iron (Fe-III) with a chemical formula of KFe 3 (SO 4) 2 (OH) 6. This sulfate mineral is formed in ore deposits by the …
WebThe X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results indicate that a surface layer mainly consisting of jarosite and polysulfide (Snn−/S0) might be formed during biotic stage, which can be eliminated with the introduction of ozone. easter serving bowlWebApr 12, 2024 · State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China. Correspondence to: ... The Li isotope data of the mineral separates further document that the enrichment of 7 Li in the residual melt was most likely due to the equilibrium fractionation between the mineral and melts. The ... culinary rotary mixerWebJarosite is a basic hydrous sulfate of potassium and ferric iron (Fe-III) with a chemical formula of KFe 3 (SO 4) 2 (OH) 6. This sulfate mineral is formed in ore deposits by the oxidation of iron sulfides. culinary sage botanical nameWebSep 30, 2024 · The kaolinite and dickite association with fine-grained alunite and jarosite point out the steam-heated igneous environments at shallow depth level. ... Iron oxy-hydroxide ... Epstein S (1970) The oxygen and hydrogen isotope geochemistry of clay minerals. Geochim Cosmochim Acta 34:25–42. Google Scholar Sayın SA (2007) Origin of … culinary sage flowersWebNaturally occurring iron (26 Fe) consists of four stable isotopes: 5.845% of 54 Fe (possibly radioactive with a half-life over 4.4 × 10 20 years), 91.754% of 56 Fe, 2.119% of 57 Fe and … culinary schnucks downtownWebFeb 1, 2024 · Iron isotope geochemistry of jarosite and implications for recrystallization. The large spread in iron isotope values of jarosite may reflect the range in δ 56Fe values of the precursor sulfides, differences in alkali content, and fractionation during jarosite … easter sewing crafts to sellWebIron isotope geochemistry and mineralogy of jarosite in sulfur-rich sediments @article{Whitworth2024IronIG, title={Iron isotope geochemistry and mineralogy of jarosite in sulfur-rich sediments}, author={Anne J. Whitworth and Helen E.A. Brand and Siobhan A. Wilson and Andrew J. Frierdich}, journal={Geochimica et Cosmochimica Acta}, year={2024 … easter services st augustine