lepidocrocite


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Related to lepidocrocite: magnetite, goethite, Akaganeite

lepidocrocite

[‚lep·ə·dō′krō‚sīt]
(mineralogy)
α-FeO(OH) A ruby- or blood-red mineral crystallizing in the orthorhombic system; it is associated with limonite in iron ores and is a component of meteorites.
References in periodicals archive ?
Borggaard (1982) found that natural hematite and magnetite were not completely dissolved by DCB, while natural goethite and lepidocrocite and a synthetic ferrihydrite were.
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.
As seen in Table 1, goethite is the dominating phase (81%) in the sample Fe-P2, while in the Fe-P2d the barrier layer is mostly formed by lepidocrocite (73%).
Additionally, hematite, goethite, lepidocrocite, ferrihydrite, and noncrystalline iron as well as organic-complexed iron can be exacted by the CBD procedure.
The main objective of the research was to study the possibility to use lepidocrocite nanoparticles (?-FeOOH) as catalyst in the elimination of organic pollutants from industrial wastewaters.
These images indicated the presence of cotton ball like structure of goethite (a- FeO(OH)) and sandy crystals flowery structure of lepidocrocite (-FeO(OH)) in the corrosion product.
Brown Jr., "EXAFS analysis of arsenite adsorption onto two-line ferrihydrite, hematite, goethite, and lepidocrocite," Environmental Science and Technology, vol.
En este difractograma estan presentes las siguientes fases: C: calcita, G: goethita, AN: Andradita, MG: magnetita, W: Wustita, L: lepidocrocite, HM: hematite y Q: cuarzo.
Otros productos como lepidocrocite y hematita son hallados con menor intensidad, esto posiblemente por el bajo porcentaje de estos hidroxidos presentes en la muestras analizadas; tambien debido a la mezcla con el hierro, debido a que poseen parametros similares (Rodriguez et al., 2008; Perez, 2007).
En la Figura 1 parte superior se observa el espectro DRX correspondiente al concreto AAS expuesto al ion cloruro (AASA con cloro), aqui se pueden encontrar las siguientes fases presentes: C: calcita, G: goethita, AN: Andradita, H: halita, MG: magnetita, W: wustite, L: lepidocrocite, HM: hematite y Q: cuarzo.
(1977) reported that aluminum oxides (gibbsite, boehmite, corundum) provided more reactive surfaces for P sorption than do iron oxides (goethite, hematite, lepidocrocite).