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Lead, Zinc and Antimony Leaching from Glass

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Lead, Zinc and Antimony Leaching from Glass Goldschmidt Conference Abstracts 2045 Lead, zinc and antimony leaching Newly discovered MIL 090030, MIL from glass-works fly ash in simple 090032, and MIL 090136 nakhlites: organic acids Paired with MIL 03346? M. UDATNY1*, M. MIHALJEVIC1 AND L. STRNAD2 A. UDRY AND H.Y. MCSWEEN, JR. 1Institute of Geochemistry, Mineralogy and Mineral Department of Earth and Planetary Sciences, University of Resources, Faculty of Science, Charles University, Tennessee, Knoxville, TN, 37996, US Albertov 6, 128 43 Prague, Czech Republic (*correspondence: [email protected]) Here we present the petrology of newly discovered (2009- 2Laboratories of Geological institutes, Faculty of Science, 2010) meteorites: MIL 090030, MIL 090032 and MIL 090136 Charles University, Albertov 6, 128 43 Prague, Czech from Miller Range, Antarctica. Our aim is to test the Republic hypothesis [1, 2] that these meteorites are paired with nakhlite MIL 03346, which underwent less equilibration and faster The release of hazardous elements from anomalous cooling that the other nakhlites, and so originate from the top geomaterials represent risk for the environment. In our of the nakhlite cumulate pile [3]. research, we focused on exogenic alteration of fly ash (FA) The mineralogy of these nakhlites is dominated by originating from glass-works in Svetla nad Sazavou (Czech cumulus euhedral augite and less-abundant cumulus olivine. Republic). This factory produces glass with high amounts of They also display a fine-grained albitic intercumulus matrix PbO. FA from electrostatic filter contains elevated composition, which exhibits fayalite-magnetite filaments, and concentrations of Pb, Zn and Sb. The main mineral phases of skeletal ilmenite. Pyroxene displays a 10 !m Fe-rich rim, this material detected by X-ray diffraction are calcite CaCO3 suggesting reequilibration with intercumulus matrix. (79%), witherite BaCO3 (10%), quartz SiO2 (6%) and Iddingsite has been observed, representing the aqueous senarmontite Sb2O3 (5%). Small amount of FA may be emitted alteration product of olivine. Pyroxene cores have a from factory and can settle in the surrounding environment composition of Wo40 and En36, and pyroxene rims have an (soil). average composition of Wo32-40 and En8-12. Olivine has a Low-molecular-weight organic acids (citric, acetic and composition of Fo35-42, and interstitial olivine has a oxalic in concentration of 0.5 mmol/L), simulating soil-like composition >Fa90, which are similar to those of MIL 03346 environments and deionised water, were used to test possible [3]. mobilization of risk elements from the FA. The leaching Similarities in mineral compositions, abundances, and experiments were carried out at liquid-to-solid (L/S) ratio of textures infer that these nakhlites are paired with MIL 03346. 10 (1 g of FA in 10 ml of leaching medium). The solutions Major and trace elements combined with CSD analyses, will were shaked in ten different times (0.5 to 1440 hours). determine the location of these three nakhlites within the Leachates were analyzed by inductively coupled plasma mass cumulate pile and further assess the possibility of a pairing spectrometry (ICP-MS). with nakhlite MIL 03346. This enables the petrologic Lead, Zn and Sb exhibit different kinetic leaching curves variability to be constrained within a much larger sample of corresponding to different behaviour of cations (Zn, Pb) and MIL 03346. anion (Sb). The concentration of Zn in leachate initially increased, then rapidly decreased and subsequently wery [1] Righter K. (2010) Antartic Meteorite Newsletter 33, 2. slowly increased. The Pb concentration increased rapidly at [2] Corrigan C. M. et al. (2001) LPSC 42, #2657. [3] Day J. the beginning and then very slowly decreased due to possible M. D. et al. (2005) Met & Pl. Sc. 41, 581–606. sorption on present and newly formed phases. Concentration of Sb in leachate increased during all the experiment, which can be attributed to the slow dissolution of senarmontite. Large differences between four leaching solutions were not observed. The leaching is fastest in the citric acid solution. The initial pH were about 3.3–4.0 for organic acids and about 5.6 for deionised water). All the leachates reached the pH value about 10, which corresponds to the equilibrium with calcite present in the FA. Mineralogical Magazine www.minersoc.org Downloaded from http://pubs.geoscienceworld.org/minmag/article-pdf/75/3/2045/2919267/gsminmag.75.3.21-U.pdf by guest on 26 September 2021 2046 Goldschmidt Conference Abstracts 32/33/34/36 ‘Hidden’ metals and minerals: Ultraviolet Spectra of SO2; How to detect nanocompounds implications for the Archaean S.S. UDUBASA1*, G. UDUBASA1, S. CONSTANTINESCU2 atmosphere 2 AND N. POPESCU-POGRION 1 2 YUICHIRO UENO , SEBASTIAN DANIELACHE , 1Univ. of Bucharest, Fac. of Geology & Geophysics, SHOHEI HATTORI2, MATTHEW JOHNSON3 2 Bucharest, Romania AND NAOHIRO YOSHIDA (*correspondence: [email protected]) 1 2 Tokyo Institute of Technology, Meguro, Tokyo 152-8551, National Institute of Materials Physics, Magurele-Bucharest, Japan ([email protected]) Romania 2 Tokyo Institute of Technology, Midori-ku, Yokoyama, 226-8502, Japan Mining waste dumps provide materials suitable to 3 University of Copenhagen, DK-2100, Denmark. investigate the fate of some metals and minerals during processing/alteration by meteoric waters. Such materials Photodissociation of SO2 is known to yield mass contain commonly all the minerals of the primary ores. It has independent fractionation of sulfur isotopes (S-MIF). The MIF been proven that, in addition, some minerals or compounds at recored in the Archaean sedimentary rocks can be an nanometric scale can form within the waste dumps. Such important tracer for the atmospheric chemistry at that time, minerals we can call ‘hidden’, as they escape the routine though wavelength dependency of the MIF by SO2 photolysis investigation by mineralogical methods. Their identification is still poorly understood. We newly determined the ultraviolet relies on structural techniques such as TEM/SAED, NGR 32 33 34 absorption cross sections of not only SO2, SO2 and SO2 (Mössbauer), XRD etc. 36 -1 but also SO2 from 190 to 220 nm with a resolution of 4 cm . A waste dump in the Leaota Mts., South Carpathians, The spectra of the 32S, 33S and 34S samples are in agreement Romania, has been selected for detailed investigations. The with our previously published spectra [1]. The cross sections material was produced by exploration of several types of ores, of the isotopically enriched species (>98% for all the four i.e. a combination of pentametallic ores (Ag-Co-Ni-Bi-U) and isotopologues) were corrected based on the isotopic gold + Cu-Pb-Zn ores. Note that the waste dump is about 50- composition of the samples used for the measurements. The 60 years old. absorption spectra show rich vibrational structure and the Attempts were made for the uptake of metals by using Zea positions and widths of the peaks change with isotopic mays and Trifolium repens planted on waste dump materials substitution in a complex fashion. and neutral soils artificially enriched in metals (Au, U, Cu, The results show that the mass independent fractionation As). Good results were obtained in both experiments. observed during broadband photolysis is product of the change Significant enrichment factors of metals (plants vs. starting in the amount of red shifting of the heavier isotopologues as substratum) were obtained in both cases and both plants, plus suggested by our previous analyses [1, 2]. surprisingly by analysing also Alnus incana, a spontaneously We will discuss the implications for the chemical grown tree on the waste dump [2]. composition of the Archaean atmosphere and its evolution The ‘hidden’ compounds of nanometric size were based on our calculated wavelength dependency of mass identified in all the samples analysed: Au, Au-Ag alloys, independent fractionation factors for 33S and 36S. Ag2CO3 (probably the first occurrence under natural conditions), maghemite, wüstite, pseudobrookite, lavendulan, [1] Danielache et al. (2008) J Geophys Res 113, D17314. and an amorphous phase, on which the silver carbonate [2] Ueno et al. (2009) PNAS 106, 14784–14789. develops. Such nanocompounds are likely to facilitate the metals uptake by plants as the nano-sized compounds show a greater bioavailability as compared to the crystalline (larger size) equivalents [1, 3]. The search for nanocompounds in plants and a deeper investigation of the amorphous phase are in progress. [1] Hochella (2008) Elements 4, 373–379. [2] Udubasa et al. (2010) Rev. Roum. Geol./Rom. J. Geology, 53–54 (in press). [3] Waychunas & Zhang (2008) Elements 4, 381–387. Mineralogical Magazine www.minersoc.org Downloaded from http://pubs.geoscienceworld.org/minmag/article-pdf/75/3/2045/2919267/gsminmag.75.3.21-U.pdf by guest on 26 September 2021 Goldschmidt Conference Abstracts 2047 A novel application of (U-Th)/He Calorimetry in soil sciences: geochronology to constrain the age of An unique approach small, young meteorite impact HAMEED ULLAH*, JOSE A. SIMONI AND craters: A case study of Monturaqui CLÁUDIO AIROLDI crater, Chile Instituto de Quimica, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil (*correspondance: 1 2 I. UKSTINS PEATE , M.C. VAN SOEST [email protected]) AND J.-A. WARTHO2 1Geoscience, 121 Trowbridge Hall, Univ. Iowa, Iowa City IA All physical, chemical and biological processes are 52242 ([email protected]) accompanied by changes in energy which means, heat. This 2Noble
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