• Akaganeite - Wikipedia

    en.wikipedia.org/wiki/Akaganeite Akaganeite, also written as the deprecated Akaganéite, is a chloride-containing iron(III) oxide-hydroxide mineral, formed by the weathering of pyrrhotite (Fe 1−x S). Akaganeite is often described as the β phase of anhydrous ferric oxyhydroxide FeOOH , but some chloride (or fluoride ) ions are normally included in the structure, [2] , so a ...
  • Akaganeite Mineral Data

    webmineral.com/data/Akaganeite.shtml Akaganeite Crystallography: Axial Ratios: a:b:c =3.4927:1:3.469 : Cell Dimensions: a = 10.587, b = 3.0311, c = 10.515, Z = 1; beta = 90.03° V = 337.43 Den(Calc)= 3.75
  • Akaganeite: Mineral information, data and localities.

    www.mindat.org/min-67.html The presence of akaganeite indicates high concentrations of chloride in an acidic environment (Ståhl et al. 2003). Note: The spelling akaganéite is incorrect (Burke, 2008).
  • Akaganeite - an overview | ScienceDirect Topics

    www.sciencedirect.com/topics/earth-and-planetary-sciences/akaganeite Akaganeite (β-FeOOHCl) has been found in environments with high chloride concentrations (0.1 mol l −1), low pH (3–4), and high temperature (60°C), e.g., in hot springs and volcanic deposits. Akaganeite consists of 2 × 2 channels (referring to the width of the channels in octahedral units) built by edge-sharing double chains (Figure 2f).
  • On the formation of β-FeOOH (akaganéite) in chloride ...

    www.sciencedirect.com/science/article/pii/S0010938X06001909 Note that the pH of the suspension between t 2 and t f, during the formation of akaganeite from GR(Cl −) ∗, is approximately 4.5. It falls down to 3.0 after t f, when akaganeite is the only solid phase remaining . 3.2. Effect of the concentrations of reactants on the oxidation by air of iron(II) precipitates
  • Akaganeite | Article about akaganeite by The Free Dictionary

    encyclopedia2.thefreedictionary.com/akaganeite The Identified Phases Nature of the Corrosion and Scale Products Magnetite ([Fe.sub.3] Iron Oxide Corrosion Product: [O.sub.4]) Lepidocrocite (FeOOH) (i) At a high temperature Goethite (FeOOH) magnetite corrosion products Akaganeite (FeOOH) it will coat the iron/steel to prevent oxygen to reach underlying metal.
  • Synthesis and Anion Exchange of Tunnel Structure Akaganeite

    pubs.acs.org/doi/10.1021/cm010310w Akaganeite (β-FeOOH) has been prepared by the hydrolysis of FeCl3 solutions. The effects of microwave heating, pH of the solution, and addition of manganese with different valence states have been studied for the optimization of its synthesis. The nucleation and growth of akaganeite crystallites are accelerated by microwave heating. A low pH favors the crystallization of akaganeite, and a ...
  • What does AKAGANÉITE mean?

    www.definitions.net/definition/AKAGAN%C3%89ITE Definition of AKAGANÉITE in the Definitions.net dictionary. Meaning of AKAGANÉITE. What does AKAGANÉITE mean? Information and translations of AKAGANÉITE in the most comprehensive dictionary definitions resource on the web.
  • Environmental Conditions for Akaganeite Formation in ...

    corrosionjournal.org/doi/10.5006/1672 The corrosion of mild steel in chloride-rich atmospheres is a highly topical issue. The formation of the oxyhydroxide akaganeite (β-FeOOH) in this type of atmosphere leads to a notable acceleration of the steel corrosion process.
  • Evolution in the structure of akaganeite and hematite ...

    www.cambridge.org/core/journals/.../26792FFE6412A3688DEB582C7DA4D273 Akaganeite was the first phase to form and hematite was the final phase in our experiments with temperatures between 150 and 200 °C. Akaganeite was the only phase that formed at 100 °C. Rietveld analyses revealed that the akaganeite unit-cell volume contracted until the onset of dissolution, and subsequently expanded.