 | | Journal (article/letter/editorial) | | of coordination polyhedra for aluminum VOLKER KAHLENBERG,1,2,* REINHARD X. FISCHER,1 AND CLIFF S.J. SHAW3...Bremen, Klagenfurter Strasse, D-28359 Bremen, Germany 2 Department of Geosciences, State University of...Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany ABSTRACT The crystal structure of tetracalcium...Ca4Al6O13 exhibit a relationship to those of perovskite: a ≈ 2 aPv, b ≈ 5 aPv. and c ≈ 4 2 aPv.. The...building units is slightly corrugated sheets of perovskite-type corner sharing AlO6 octahedra perpendicular |  | | Journal (article/letter/editorial) | | com/locate/rgg Minerals of the pseudobinary perovskite-brownmillerite series from combustion metamorphic...accepted 27 March 2008 Abstract Brownmillerite, Fe-perovskite, and two intermediate phases (Ca3Ti(Fe,Al)2O8...existence of the pseudobinary perovskite-brownmillerite series in nature. Fe-perovskite contains the Ca2(Fe,Al)2O5...rocks, the phase X is the only member of the perovskite-brownmillerite series. It is clustered into two...common for all minerals of the series. The Fe-perovskite + brownmillerite paragenesis was found in none |  | | Journal (article/letter/editorial) | | Ca3Si2O7 POLYMORPH von Lukas Petschnig & Volker Kahlenberg Institut für Mineralogie und Petrographie Universität...m Karlsruhe, D-76344 EggensteinLeopoldshafen, Germany (crysdata@FIZ-Karlsruhe.de), and are available...Na2Ca2Si2O7 (KAHLENBERG & HÖSCH, 2002), Ba4Al2O7 (KAHLENBERG, 2001) or Sr4Ga2O7 (KAHLENBERG et al., 2005)...Pyrometamorphism. Springer Verlag, Second edition. KAHLENBERG, V. (2001): Crystal structure of Ba8[Al3O10][AlO4]...to kilchoanite. - Mineral. Mag. 65, 533-541. KAHLENBERG, V. & HÖSCH, A. (2002): The crystal structure |  | | Journal (article/letter/editorial) | | with the Brownmillerite-type structure VOLKER KAHLENBERG,1 REINHARD X. FISCHER,1 AND CLIFF S.J. SHAW2...D-28359 Bremen, Germany 2 Bayerisches Geoinstitut, Universität Bayreuth, D-95440 Bayreuth, Germany ABSTRACT...family. Main building units are (1) layers of perovskite type corner connected AlO6-octahedra perpendicular...5 °C from the top to the middle 1061 1062 KAHLENBERG ET AL.: STRUCTURE OF HIGH PRESSURE Ca2Al2O5 ...17 6 6 2 4 5 5 9 3 6 12 2 1 1 2 3 3 3 3 2 3 KAHLENBERG ET AL.: STRUCTURE OF HIGH PRESSURE Ca2Al2O5 |  | | Journal (article/letter/editorial) | | powder diffraction data for (5-Na2Si205. — V. Kahlenberg, M. Wendschuh-Josties, R. X. Fischer, H. Bauer...powder diffraction data for 5-Na2Si2O5. — V. Kahlenberg, M. Wendschuh-Josties, R. X. Fischer, H. Bauer...powder diffraction data for <5-Na2Si2O5. — V. Kahlenberg, M. Wendschuh-Josties, R. X. Fischer, H. Bauer...Huang, Q. — Crystal structure of the monoclinic perovskite Sr 394 Ca 131 Bi 270 O, 2 . — W. Wong-Ng, J.... J. A. — Crystal structure of the monoclinic perovskite Sr394Ca, 3J Bi 270 O 12 . — W. Wong-Ng, J. A |  | Arroyabe, Erik, Prechtel, Felix, Többens, Daniel M., Kaindl, Reinhard, Kahlenberg, Volker (2011) K2Ca3Si3O10, a novel trisilicate: high-pressure synthesis, structural, spectroscopic and computational studies. European Journal of Mineralogy, 23 (3) 425-435 doi:10.1127/0935-1221/2011/0023-2096 | Journal (article/letter/editorial) | | DANIEL M. TÖBBENS, REINHARD KAINDL and VOLKER KAHLENBERG* Institut für Mineralogie und Petrographie...phases of this system started only recently (Kahlenberg et al., 2006; Arroyabe et al., 2009a, c) although...Arroyabe, F. Prechtel, D.M. Többens, R. Kaindl, V. Kahlenberg has been found and structurally characterized...characterized in our laboratory only recently (Arroyabe & Kahlenberg, 2011) can be transformed into a phase-X type...multi-anvil module (both from Voggenreiter, Mainleus, Germany) using 18/ 11 assemblies. Experimental and calibration |  | | Journal (article/letter/editorial) | | ferrite Ca2(Fe1-x Mex)2O5 (Me = Al3+,Ga3+) VOLKER KAHLENBERG* and REINHARD X. FISCHER FB Geowissenschaften...Universität Bremen, Klagenfurter Str., D-28359 Bremen, Germany Abstract: The crystal structures of Ca2(Fe0.933...modifications are the same, involving (a) layers of perovskite-type corner-connected (Fe,Al)O6octahedra and...Verlagsbuchhandlung. D-70176 Stuttgart 130 V. Kahlenberg, R. X. Fischer Fig. 1. Projection of the Pnma-stucture...calcium ferrites Ca2(Fe1-x Mex)2O5. 132 V. Kahlenberg, R. X. Fischer pounds were mixed again. A sample |  | Kahlenberg, Volker, Mayerl, Michael Jean-Philippe, Schmidmair, Daniela, Krüger, Hannes, Tribus, Martina (2018) First investigations on the quaternary system Na2O-K2O-CaO-SiO2: synthesis and crystal structure of the mixed alkali calcium silicate K1.08Na0.92Ca6Si4O15. Mineralogy and Petrology, 112 (2) 219-228 doi:10.1007/s00710-017-0532-0 | Journal (article/letter/editorial) | | detailed Editorial handling: D. Paktunc * Volker Kahlenberg volker.kahlenberg@uibk.ac.at 1 Institute of...interpretation of 13 Vol.:(0123456789) V. Kahlenberg et al. 220 (i) melt formation/composition and...N a2O-CaO-SiO2 and K2O-CaO-SiO2 is large (Kahlenberg and Maier 2016; Schmidmair et al. 2015) and for...(Arroyabe and Kahlenberg 2011) and 1:1 mixtures of [Si3O10]- and [SiO4]-moieties (Kahlenberg and Hösch...2Ca6Si4O15 (Arroyabe et al. 2009a) and Na2Ca6Si4O15 (Kahlenberg and Maier 2016) have related heteropolyhedral |  | | Journal (article/letter/editorial) | | powder diffraction data for <5-Na2Si2O5. — V. Kahlenberg, M. Wendschuh-Josties, R. X. Fischer, H. Bauer...scattering Crystal structure of the monoclinic perovskite Sr394Ca! 3 iBi 27 o0 12 . — W. Wong-Ng, J. A...chemistry Crystal structure of the monoclinic perovskite Sr 394 Ca, 3] Bi 270 O 12 . — W. Wong-Ng, J....powder diffraction data for <5-Na2Si2O5. — V. Kahlenberg, M. Wendschuh-Josties, R. X. Fischer, H. Bauer...powder diffraction data for <5-Na2Si2O5. — V. Kahlenberg, M. Wendschuh-Josties, R. X. Fischer, H. Bauer |  | Ma, C., Kampf, A. R., Connolly, H. C., Beckett, J. R., Rossman, G. R., Smith, S. A. S., Schrader, D. L. (2011) Krotite, CaAl2O4, a new refractory mineral from the NWA 1934 meteorite. American Mineralogist, 96 (5) 709-715 doi:10.2138/am.2011.3693 | Journal (article/letter/editorial) | | mantle portions of the inclusion along with minor perovskite, gehlenite, hercynite, and Cl-bearing mayenite...central and mantle regions in Cracked Egg; minor perovskite (CaTiO3), gehlenite (Ca2Al2SiO7), hercynite (FeAl2O4)...Backscatter electron image showing krotite with perovskite, gehlenite, hercynite, Cl-bearing mayenite, grossite...coordinates of synthetic low-pressure CaAl2O4 (Kahlenberg 2001) were used as the starting point. Structure...CaAl2O4 phase (Hörkner and MüllerBuschbaum 1976; Kahlenberg 2001). It consists of a tetrahedral framework |  | Wierzbicka-Wieczorek, Maria, Kolitsch, Uwe, Tillmanns, Ekkehart (2010) Synthesis and structural study of five new trisilicates, BaREE2Si3O10 (REE = Gd, Er, Yb, Sc) and SrY2Si3O10, including a review on the geometry of the Si3O10 unit. European Journal of Mineralogy, 22 (2) 245-258 doi:10.1127/0935-1221/2010/0022-1969 | Journal (article/letter/editorial) | | (2004) Fleet & Liu (2004) Fleet & Liu (2004) Kahlenberg et al. (2008) Felsche (1972) Fleet & Liu (2003)...et al. (1977) Gramaccioli et al. (1979, 1980) Kahlenberg et al. (2007) Simonov et al. (1978) Basso et...et al. (2008) This work Taylor (1971) Kahlenberg & Hösch (2002) This work This work Kolitsch et al. (2006a...Horchani-Naifer et al. (2005) Palkina et al. (1979) Kahlenberg et al. (2005) Bennazha et al. (2001) Ivanov et...(2002) Ayed et al. (2004) Podor et al. (2003) Kahlenberg (2001) Lyakhov et al. (1991a) Averbuch-Pouchot |  | Kahlenberg, Volker, Mayerl, Michael Jean-Philippe, Schmidmair, Daniela, Krüger, Hannes, Tribus, Martina (2018) Preparation and characterization of Na1.5K0.5Ca6Si4O15 (Na1.5K0.5Ca6[SiO4]2[Si2O7]) and Na1.41K0.19Ca2.20Si2O7: two new phases in the system Na2O–K2O–CaO–SiO2. European Journal of Mineralogy, 30 (5) 957-966 doi:10.1127/ejm/2018/0030-2767 | Journal (article/letter/editorial) | | phases in the system Na2O–K2O–CaO–SiO2 VOLKER KAHLENBERG*, MICHAEL JEAN-PHILIPPE MAYERL, DANIELA SCHMIDMAIR...crystal structure; biomass combustion; ashes. V. Kahlenberg et al. (e.g. Lindberg et al., 2013). Both aspects...silicates exist (e.g. Schmidmair et al., 2015; Kahlenberg & Maier, 2016). However, especially for the K–Ca-silicates...composition K1.08Na0.92Ca6Si4O15 has been proved (Kahlenberg et al., 2017). Consequently, there is a clear...were chosen according to the previous study (Kahlenberg & Maier, 2016). 20190804-154545 A30889/27299/80FA9090 |  | | Journal (article/letter/editorial) | | equilibria in the system Na2O-CaO-SiO2 Volker Kahlenberg 1 & Matthias Maier 1,2 Received: 12 March 2016...which is available to authorized users. * Volker Kahlenberg Volker.Kahlenberg@uibk.ac.at 1 Institute of...GmbH & Co. KG, Ziegeleistr. 2, D-84367 Zeilarn, Germany Introduction Among the silicates containing alkali...respectively (Varshneya 1994; Shelby 2009). V. Kahlenberg, M. Maier Since the landmark paper of Morey...Na2Ca3Si6O16 (Ihara et al. 1984; Kahlenberg et al. 2010), Na2Ca2Si2O7 (Kahlenberg and Hösch 2002) and Na 2 Ca |  | | Journal (article/letter/editorial) | | Diffraction Data Thomas Langreiter and Volker Kahlenberg * Institute of Mineralogy and Petrography, University...program TEV as a part of his Master thesis. Volker Kahlenberg conceived and designed the project. Conflicts...Crystals—An Introduction; Wiley-VCH: Weinheim, Germany, 2007; pp. 159–164. Schlenker, J.L.; Gibbs, G.V...thermoelastic and structural properties of LaGaO3 perovskite in the Pbnm phase. J. Solid State Chem. 2012...Washington, DC, USA, 1995; pp. 29–44. Botta, C.; Kahlenberg, V.; Hejny, C.; Többens, D.M.; Bykov, M.; van |  | Galuskin, E. V., Gfeller, F., Savelyeva, V. B., Armbruster, T., Lazic, B., Galuskina, I. O., Tobbens, D. M., Zadov, A. E., Dzierzanowski, P., Pertsev, N. N., Gazeev, V. M. (2012) Pavlovskyite Ca8(SiO4)2(Si3O10): A new mineral of altered silicate-carbonate xenoliths from the two Russian type localities, Birkhin massif, Baikal Lake area and Upper Chegem caldera, North Caucasus. American Mineralogist, 97 (4) 503-512 doi:10.2138/am.2012.3970 | Journal (article/letter/editorial) | | dellaite, Gal = galuskinite, Bgh = baghdadite, Prv = perovskite, Spu = spurrite, Ves = vesuvianite, Cln = clintonite...clintonite, fluor- and hydroxylapatite, hillebrandite, perovskite, wollastonite, and vesuvianite. The development...kerimasite, tazheranite, baddeleyite, lakargiite, perovskite, apatite, and magnesioferrite are preserved in...(Bayerisches Geoinstitute, University of Bayreuth, Germany). The incident laser excitation was provided by...followed previously tested procedures (Többens and Kahlenberg 2011), using for the Hamiltonian a variation |  | | Journal (article/letter/editorial) | | oxygen deficiency with respect to the average perovskite structure, and are promising candidates for oxygen...crystals were obtained in the cubic oxygen-deficient perovskite structure, Ca2 Fe2 O5 crystallizes in the brownmillerite...can be described as an oxygen-anion-deficient perovskite phase, and its structure can be derived from...ordered way along the [110] direction of the cubic perovskite. Three different prototypes of the general formula...ABO2.5 or A2 B2 O5 can all be obtained from the perovskite structure, modifying every second octahedral |  | Kahlenberg, Volker, Galuskina, Irina, Krüger, Biljana, Pauluhn, Anuschka, Galuskin, Evgeny (2019) Structural investigations on bredigite from the Hatrurim Complex. Mineralogy and Petrology, 113 (2) 261-272 doi:10.1007/s00710-018-0646-z | Journal (article/letter/editorial) | | on bredigite from the Hatrurim Complex Volker Kahlenberg 1 & Irina Galuskina 2 & Biljana Krüger 1 &...1948; Editorial handling: H. Poellmann * Volker Kahlenberg volker.kahlenberg@uibk.ac.at 1 Institute of...(Sokol et al. 2010; Novikov et al. 2013). V. Kahlenberg et al. There are a few classes of pyrometamorphic...contribution are extremely unusual. They can be V. Kahlenberg et al. Table 2 Relative atomic coordinates and...brown due to small inclusions of minerals such as perovskite or the magnesioferrite-spinel series. Rounded |  | | Journal (article/letter/editorial) | | component K2Ca2Si2O7 ERIK ARROYABE and VOLKER KAHLENBERG* Institut für Mineralogie and Petrographie...Verlagsbuchhandlung, D-70176 Stuttgart 102 E. Arroyabe, V. Kahlenberg deviations from the stoichiometric values of...Å3 eschweizerbart_xxx 104 E. Arroyabe, V. Kahlenberg Table 2. Atomic coordinates and equivalent isotropic...and trimeric [Si3O10]-units in the ratio 1 : 1 (Kahlenberg & Hösch, 2002). On the other hand, silicates...whole eschweizerbart_xxx 106 E. Arroyabe, V. Kahlenberg Table 6. Powder diffraction data including calculated |  | | Journal (article/letter/editorial) | | description of the relative strengths of perovskite and post-perovskite in the system NaCoF3, based on deformation...L. (2012) The relative strength of perovskite and post-perovskite NaCoF3. Mineralogical Magazine, 76...76, 925 932. Gatta, G.D., Lotti, P., Kahlenberg, V. and Haefeker, U. (2012) The low-temperature behaviour |  | | Journal (article/letter/editorial) | | Energie, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany. 0003-004X/13/0001–197$05.00/DOI: http://dx.doi...software, as described in the study by Többens and Kahlenberg (2011). The atom displacements used for the calculation...aluminates and similar compounds (Többens and Kahlenberg 2011), and it worked very well for MgAl2O4 and...calculations demonstrated in the study by Többens and Kahlenberg (2011). A full assignment of the spectrum, limited...expansivity of lower mantle phases MgO and MgSiO3 perovskite at high pressure derived from vibrational spectroscopy |  | | Journal (article/letter/editorial) | | Erlangen-Nürnberg, Schlossgarten 5a, 91054 Erlangen, Germany. thomas.angerer@uibk.ac.at 1 2 Despite the strong...Stilleweg 2, Hannover Germany; present address: Kiebitzweg, 104, 30880 Laatzen, Germany 3 Department of Lithospheric...Geowissenschaften und Rohstoffe (BGR, Hannover, Germany) carried out a reconnaissance survey of a hitherto...garnets, olivines, pyroxenes, layer silicates, perovskite and amphibole. The so calculated ∆Hf,elements...245(2) c = 26.824(3) Å, α = 90.00(1)°. HEJNY, C., KAHLENBERG, V., EBERHARD, T. & KRÜGER, H. (2016): Acta Crystallogr |  | | Book (volume) | | (Specord 75 IR or Specord M80, Carl Zeiss, Jena, Germany), Perkin Elmer 1600 Series FT IR spectrometer or...FT IR spectrometer (Bruker Optics, Ettlingen, Germany). IR spectrum of a pure KBr disc was subtracted...Mg3B7O13Cl Locality: Wandsleben, Saxony-Anhalt, Germany. Description: White to beige fine-grained aggregate...Lüneburger Kalkberg, Lüneburg, Lower Saxony, Germany (type locality). Description: White fibrous aggregate...Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany. Description: White crystals on anhydrite. Investigated |  | Galuskina, I. O., Vapnik, Y., Lazic, B., Armbruster, T., Murashko, M., Galuskin, E. V. (2014) Harmunite CaFe2O4: A new mineral from the Jabel Harmun, West Bank, Palestinian Autonomy, Israel. American Mineralogist, 99 (5) 965-975 doi:10.2138/am.2014.4563 | Journal (article/letter/editorial) | | te series Ca2Fe23+O5-Ca2Fe3+AlO5, Si-bearing perovskite, and barite. Vorlanite CaUO4 (Galuskin et al...discovered from xenoliths in volcanites of Eifel, Germany (Ir- ran et al. 1997), the Jabel Harmun locality... Lrn = larnite, Mgf = magnesioferrite, Prv = perovskite, Shl = shulamitite, Srb = srebrodolskite, Tnr...mineral from the Ettringer Bellerberg, Eifel, Germany. Mineralogy and Petrology, 60, 121–132. Kharton...Azgostoptekhisdat, Baku (in Russian). Lazic, B., Kahlenberg, V., and Konzett, J. (2005) Rietveld analysis |  | Iskrina, Anastasiia V., Spivak, Anna V., Bobrov, Andrey V., Eremin, Nikolai N., Marchenko, Ekaterina I., Dubrovinsky, Leonid S. (2020) Synthesis and crystal structures of new high-pressure phases CaAl2O4 and Ca2Al6O11. Lithos, 374. 105689pp. doi:10.1016/j.lithos.2020.105689 | Journal (article/letter/editorial) | | 119991 Jo ur University of Bayreuth, Bayreuth, Germany 95440 Corresponding Author: grigoryeva_av888@mail...transformed into an association of phases with the perovskite-type structure, which is accompanied by significant...amounts of Al in bridgmanite (Mg,Fe)SiO3, CaSiO3-perovskite, or CaMgAl4Si4O16 with the hollandite type structure...with a loss of lattice energy and density in perovskite phases. Instead, 3 Journal Pre-proof Ca,Al(Fe)-oxides... and was intergrown with grossite (СaAl4O7), perovskite, and melilite. na Later CaAl2O4 krotite was |  | Sharygin, Victor V., Lazic, Biljana, Armbruster, Thomas M., Murashko, Mikhail N., Wirth, Richard, Galuskina, Irina O., Galuskin, Evgeny V., Vapnik, Yevgeny, Britvin, Sergey N., Logvinova, Alla M. (2013) Shulamitite Ca3TiFe3+AlO8 - a new perovskite-related mineral from Hatrurim Basin, Israel. European Journal of Mineralogy, 25 (1) 97-111 doi:10.1127/0935-1221/2013/0025-2259 | Journal (article/letter/editorial) | | November 2012 Shulamitite Ca3TiFe3þAlO8 – a new perovskite-related mineral from Hatrurim Basin, Israel VICTOR...Geosciences, Section 3.3, Telegrafenberg, 14473 Potsdam, Germany 6 Department of Geochemistry, Mineralogy and Petrography...Ca3TiFe3þAlO8, is a mineral intermediate between perovskite CaTiO3 and brownmillerite Ca2(Fe,Al)2O5. It was...Key-words: shulamitite, Ca3TiFe2O8, new mineral, perovskite, brownmillerite, crystal structure, Raman spectroscopy...Fe-rich compounds based on the perovskite and brownmillerite (perovskite-like) structure are intensively |
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