• Chukanovite Mineral Data

    www.webmineral.com/data/Chukanovite.shtml Chukanovite Image: Images: Chukanovite. Comments: Left - acicular to fibrous individuals of chukanovite. Right - spherulites of chukanovite up to 1 mm (Eur. J. Mineral, v19:891). Location: Found in cavities of weathered fragments of the Dronino ataxite iron eteorite found near the Dronino village, Kasimov district, Ryazan’ Oblast, Russia.
  • Chukanovite: Mineral information, data and localities.

    www.mindat.org/min-28917.html Search for Chukanovite on Well-Arranged Molecules; Wilensky Exquisite Minerals; The Arkenstone - Fine Minerals; Buy from McDougall Minerals; Fine Minerals from Weinrich Minerals, Inc. Heritage 1971 - Chinese Minerals; Fabre Minerals - search for Chukanovite specimens; High-end worldwide specimens & outstanding customer service; Buy from David K ...
  • Fe(II) hydroxycarbonate Fe2(OH)2CO3 (chukanovite) as iron ...

    www.sciencedirect.com/science/article/pii/S0277538708007201 The conditions favouring the formation of chukanovite Fe 2 (OH) 2 CO 3 at the detriment of Fe(II) hydroxide Fe(OH) 2, often considered as the first solid forming from the Fe(II) dissolved species generated by the dissolution of steel, were determined. Chukanovite was the unique compound to form for R > 1 and R′ > 0.5.
  • Chukanovite (Fe2(OH)2CO3) identified as a corrosion ...

    www.sciencedirect.com/science/article/pii/S0010938X14001553 Chukanovite (Fe 2 (OH) 2 CO 3) has been identified by synchrotron-sourced infrared microspectroscopy as the main corrosion product at the sand-deposited carbon steel corroded in CO 2-saturated brine at 80 °C.Siderite has been shown as a minor corrosion product at the sand-deposited steel, and the only product at the sand-free steel. The sand-deposited steels have similar general corrosion ...
  • The crystal structure and Gibbs free energy of formation ...

    geoscience.wisc.edu/astrobiology/wp-content/.../Lee_Xu_2018_Chem_Geol.pdf Rietveld refinement of the chukanovite structure shows it is as expected monoclinic, space group of P2 1/a, with a=12.402(2), b=9.414(1), c=3.216(1) Å, β=97.73(3)°. The standard Gibbs free energy of formation of chukanovite is estimated at −1167.2 ± 1.2kJmol−1 from the equilibrium between siderite and chukanovite.
  • Solubility Model for Ferrous Iron Hydroxide, Hibbingite ...

    www.osti.gov/pages/biblio/1411232 Abstract. Here, a solubility model is presented for ferrous iron hydroxide (Fe(OH) 2 (s)), hibbingite (Fe 2 Cl(OH) 3 (s)), siderite (FeCO 3 (s)), and chukanovite (Fe 2 CO 3 (OH) 2 (s)). The Pitzer activity coefficient equation was utilized in developing the model to account for the excess free energies of aqueous species in the background solutions of high ionic strength.
  • Chukanovite Fe2(CO3)(OH)2 - Handbook of Mineralogy

    www.handbookofmineralogy.org/pdfs/chukanovite.pdf Chukanovite Fe 2 (CO 3)(OH) 2 Crystal Data: Monoclinic. Point Group: 2/m. Acicular to fibrous, elongated on [001], to 0.5 mm and 2–3 μm thick; often as spherulites (rarely to 1 mm). Typically as botryoidal crusts of spherulitic clusters and parallel- or radial-columnar aggregates, to 1 mm thick. ...
  • AMCSD Search Results - rruff.geo.arizona.edu

    rruff.geo.arizona.edu/AMS/minerals/Chukanovite Chukanovite : Pekov I V, Perchiazzi N, Merlino S, Kalachev V N, Merlini M, Zadov A E : European Journal of Mineralogy 19 (2007) 891-898: Chukanovite, Fe2(CO3)(OH)2, a new mineral from the weathered iron meteorite Dronino
  • Oxidation State and Local Structure of Plutonium Reacted ...

    pubs.acs.org/doi/10.1021/es200645a Due to their redox reactivity, surface sorption characteristics, and ubiquity as corrosion products or as minerals in natural sediments, iron(II)-bearing minerals control to a large extent the environmental fate of actinides. Pu-LIII-edge XANES and EXAFS spectra were used to investigate reaction products of aqueous 242Pu(III) and 242Pu(V) reacted with magnetite, mackinawite, and chukanovite ...
  • Solubility Model for Ferrous Iron Hydroxide, Hibbingite ...

    pubs.acs.org/doi/10.1021/acsearthspacechem.7b00065 A solubility model is presented for ferrous iron hydroxide (Fe(OH)2(s)), hibbingite (Fe2Cl(OH)3(s)), siderite (FeCO3(s)), and chukanovite (Fe2CO3(OH)2(s)). The Pitzer activity coefficient equation was utilized in developing the model to account for the excess free energies of aqueous species in the background solutions of high ionic strength.