 | Pekov, Igor V., Siidra, Oleg I., Chukanov, Nikita V., Yapaskurt, Vasiliy O., Britvin, Sergey N., Krivovichev, Sergey V., Schüller, Willi, Ternes, Bernd (2015) Engelhauptite, KCu3(V2O7)(OH)2Cl, a new mineral species from Eifel, Germany. Mineralogy and Petrology, 109 (6) 705-711 doi:10.1007/s00710-015-0400-8 | Journal (article/letter/editorial) | | KCu3(V2O7)(OH)2Cl, a new mineral species from Eifel, Germany Igor V. Pekov 1 & Oleg I. Siidra 2 & Nikita V....KCu3(V2O7)(OH)2Cl, was found within cavities in nepheline basalts at the Auf’m Kopp quarry (BSchlackenkegel...Höhe 636 südöstlich Neroth^), Daun, Eifel region, Rheinland-Pfalz, Germany. Associated minerals are volborthite...the phlogopite–oxyphlogopite series, sanidine, nepheline, leucite, fluorapatite and magnetite. Engelhauptite...Straußenpesch 22, 53518 Adenau, Germany 6 Bahnhofstrasse 45, 56727 Mayen, Germany There are 20 copper vanadates |  | | Report (issue) | | Powder Pattern: Auf’mKopp quarry, Daun, Eifel region, Rheinland-Pfalz, Germany. 2.979 (100), 7.32 (98), 2.759...100.00 (1) Auf’mKopp quarry, Daun, Eifel region, Rheinland-Pfalz, Germany; average of 10 electron microprobe...Occurrence: A late mineral growing in cavities in nepheline basalt. Association: Volborthite, allophane, malachite...quarry (Kahlenberg quarry or “Schlackenkegel der Höhe 636 südöstlich Neroth”), Daun, Oberstadtfeld Municipality...Municipality, Eifel region, Rheinland-Pfalz, Germany. Name: Honors the German amateur mineralogist and mineral |  | | Journal (article/letter/editorial) | | online April 2013 Reinvestigation of pure Na-nepheline like compounds obtained from the thermal conversion...zeolite Na-LTA and originally described as standard nepheline was re-investigated. Transmission electron microscopy...parameter compared to that observed in classical nepheline. Consequently, the theoretical X-ray powder diagrams...data using structural models of (a) classical Na-nepheline (S. G. P63, a ¼ 9.971(3), c ¼ 8.349(2) Å) and...obtained in a temperature range of stability of nepheline (900–1100 C) showed the presence of both structures |  | Ferraris, Cristiano, Parodi, Gian Carlo, Pont, Sylvain, Rondeau, Benjamin, Lorand, Jean-Pierre (2014) Trinepheline and fabriesite: two new mineral species from the jadeite deposit of Tawmaw (Myanmar) European Journal of Mineralogy, 26 (2) 257-265 doi:10.1127/0935-1221/2014/0026-2348 | Journal (article/letter/editorial) | | of the c parameter that is three times that of nepheline. Fabriesite is named in memory of Jacques Fabriès...trinepheline occur intimately intergrown together with nepheline, more rarely with albite and other feldspar-group...fabriesite, EBSD, new mineral, Tawmaw (Myanmar), nepheline, sodium aluminium silicate. 1. Introduction ...of the c parameter that is three times that of nepheline (Brown et al., 1972; Klaska, 1974; Yamada et al...al., 1983; Selker et al., 1985; Kahlenberg & Böhm, 1998; Vulić et al., 2008, 2013). Fabriesite is named |  | | Journal (article/letter/editorial) | | monoclinic trinepheline Predrag Vulić and Volker Kahlenberg With 4 figures and 8 tables Abstract. The crystal...explained as a stacking sequence of a conventional nepheline unit cell (composed of two layers) and one additional...corresponds to that of a conventional pure sodium nepheline with P63-symmetry. The tripling of the c lattice...structure corresponds to that of conventional nepheline (space group P63, a = 9.977(2), c = 8.354(2) Å... c = 8.380(2) Å, V = 734.0(2) Å3. Key words: nepheline, trinepheline, crystal structure, X-ray diffraction |  | | Journal (article/letter/editorial) | | (Kristallographie), Geowissenschaften D-28359Bremen,Germany UniversitiitBremen,KlagenfurterStrasse, '?Institut...Johannes-Gutenberg-Universituit Mainz,D-55099Mainz,Germany AssrRAcr The crystal structure of a synthetic NaAlSiOo...parameteris three times the length of the c parameterin nepheline,whereasthe a parameteris about 10 A in both phases...tridymite that is not a simple superstructureof nepheline. INrnonucrron Synthetic Na-rich nephelineshave...Bueger (1955) in the spacegroup P6, for a natural nepheline sample with idealized composition NauKrAl*SirO |  | | Journal (article/letter/editorial) | | Na7.85Al7.85Si8.15O32 Predrag Vulić,* Volker Kahlenberg, and Jürgen Konzett Institute for Mineralogy...parameter is 3× the length of the c parameter in nepheline, whereas the a parameter is almost the same in...described as a consecutive stacking of basic nepheline like modules (containing two tetrahedral sheets)...15O32, flux method, nepheline Introduction The crystal structure of natural nepheline of idealized composition... and c ≈ 3c0, (a0 and c0 refer to the normal nepheline unit cell) and a second phase with even lower |  | | Journal (article/letter/editorial) | | Crystal chemistry of nephelines from ijolites and nepheline-rich pegmatites: influence of composition and...Balić-Žunić & Louise Josefine Belmonte & Volker Kahlenberg Received: 24 September 2010 / Accepted: 10 December...Abstract Ten nepheline single crystals from five different localities representing rocks from nepheline-syenite...available to authorized users. P. Vulić : V. Kahlenberg Institute of Mineralogy and Petrography, University...satellite reflections as a universal property of nepheline and resolves some controversy about this issue |  | | 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 |  | | Journal (article/letter/editorial) | | Crystal chemistry of K-rich nepheline in nephelinite from Hamada, Shimane Prefecture, Japan MAKI HAMADA1...CRYSTAL CHEMISTRY OF K-RICH NEPHELINE FROM JAPAN KEYWORDS: K-rich nepheline, X-ray structural analysis...analysis, twinning by merohedry. ABSTRACT K-rich nepheline with a structural formula of A2B6T14T24T34T44O32...electron diffraction technique. Introduction Nepheline is a framework silicate with the ideal formula...(1954) first solved the crystal structure of nepheline of volcanic origin from Monte Somma, Italy, as |  | Tait, K. T., Yang, H., Downs, R. T., Li, C., Pinch, W. W. (2010) The crystal structure of esperite, with a revised chemical formula, PbCa2(ZnSiO4)3, isostructural with beryllonite. American Mineralogist, 95 (5) 699-705 doi:10.2138/am.2010.3415 | Journal (article/letter/editorial) | | (Hörkner and Müller-Buschbaum 1976), CaAl1.8Fe0.2O4 (Kahlenberg 2001), AgXPO4 (X = Be, Zn) (Hammond et al. 1998)...configurations of six-membered rings. In tridymite, nepheline, and kalsilite, there is only one type of six-membered...in isostructural CaAl2O4 and CaAl1.8Fe0.2O4 (Kahlenberg 2001), despite the larger ionic radius of Pb2+...and BaAl2O4 with CaAl2O4 and CaAl1.8Fe0.2O4, Kahlenberg (2001) suggested that the magnitude of the coordination...beryllonite-type CaAl2O4 and CaAl1.8Fe0.2O4 (Kahlenberg 2001) indicates that there is a geometrical mismatch |  | Kechid, Sid-Ali, Parodi, Gian Carlo, Pont, Sylvain, Oberti, Roberta (2017) Davidsmithite, (Ca,□)2Na6Al8Si8O32: a new, Ca-bearing nepheline-group mineral from the Western Gneiss Region, Norway. European Journal of Mineralogy, 29 (6) 1005-1013 doi:10.1127/ejm/2017/0029-2667 | Journal (article/letter/editorial) | | Davidsmithite, (Ca,□)2Na6Al8Si8O32: a new, Ca-bearing nepheline-group mineral from the Western Gneiss Region,...Davidsmithite completes the compositional space of the nepheline-structure group by providing a new root-composition...(Ca□)2Na6Al8Si8O32. It is the Ca-analogue of classical nepheline, to which it is related by the heterovalent substitution...situated in the same atomic position as Kþ in nepheline, but some occur in a new and disordered (Ca0 )...towards the other two possible end-members of the nepheline compositional space, so that the channel site |  | | Report (issue) | | (Lovozero massif, Russia). Association: Aegirine, nepheline, potassic feldspar, cancrinite, apatite (Lovozero...Yakutia, Russia. At Kahlenberg, Ä Graulai, and Udersdorf, Eifel district, Germany. From Coyote Peak, near |  | | Journal (article/letter/editorial) | | Crystallography, Hahn-MeitnerPlatz 1, D-14109 Berlin, Germany [Received 19 November 2013; Accepted 18 February2014;...correct 1/6 Hartree-Fock contribution (Többens and Kahlenberg, 2011) was used as the Hamiltonian energy operator...followed previously tested procedures (Többens and Kahlenberg, 2011), using a Pack-Monkhorst k net with 46464...selected PBE (n = 6) functional (Többens and Kahlenberg, 2011). Some weak peaks in the experimental spectrum...the chain- silicate), respectively (Rakić and Kahlenberg, 2001; Rakić et al., 2003). This difference |  | Mikhailova, Julia A., Aksenov, Sergey M., Pakhomovsky, Yakov A., Moine, Bertrand N., Dusséaux, Camille, Vaitieva, Yulia A., Voronin, Mikhail (2022) Iron in Nepheline: Crystal Chemical Features and Petrological Applications. Minerals, 12 (10) 1257 doi:10.3390/min12101257 | Journal (article/letter/editorial) | | minerals Article Iron in Nepheline: Crystal Chemical Features and Petrological Applications Julia A...Dusséaux, C.; Vaitieva, Y.A.; Voronin, M. Iron in Nepheline: Crystal Chemical Features and Petrological Applications...mikhailova@geoksc.apatity.ru; Tel.: +7-81555-79333 Abstract: Nepheline is a nominally anhydrous aluminosilicate that...of ferrous iron in the chemical composition of nepheline from the rocks of the Khibiny and Lovozero massifs...spectroscopic, chemical and crystal chemical studies of nepheline from the Lovozero massif. We have established |  | Zubkova, Natalia V., Filinchuk, Yaroslav E., Pekov, Igor V., Pushcharovsky, Dmitry, Yu. Gobechiya, Elena R. (2010) Crystal structures of shlykovite and cryptophyllite: comparative crystal chemistry of phyllosilicate minerals of the mountainite family. European Journal of Mineralogy, 22 (4) 547-555 doi:10.1127/0935-1221/2010/0022-2041 | Journal (article/letter/editorial) | | pegmatitic assemblage with potassic feldspar, nepheline, sodalite, alkali pyroxene (Ca- and Mg-bearing...structure of another K,Ca silicate, K8CaSi10O25 (Kahlenberg et al., 2006). It is worthy of note that the...219–222. Arroyabe, E., Kaindl, R., Többens, D.M., Kahlenberg, V. (2009): Synthesis, crystal structure, and...in transmission mode. C. R. Chim., 8, 331–339. Kahlenberg, V., Kaindl, R., Többens, D.M. (2006): The crystal...Fabrizio Nestola for important comments, Volker Kahlenberg for his editorial work and SNBL for the inhouse |  | Balassone, Giuseppina, Kahlenberg, Volker, Altomare, Angela, Mormone, Angela, Rizzi, Rosanna, Saviano, Michele, Mondillo, Nicola (2014) Nephelines from the Somma-Vesuvius volcanic complex (Southern Italy): crystal-chemical, structural and genetic investigations. Mineralogy and Petrology, 108 (1) 71-90 doi:10.1007/s00710-013-0290-6 | Journal (article/letter/editorial) | | investigations Giuseppina Balassone & Volker Kahlenberg & Angela Altomare & Angela Mormone & Rosanna...previous studies of natural nephelines. All 16 nepheline samples adopt space Editorial handling: A. Beran...80134 Naples, Italy e-mail: balasson@unina.it V. Kahlenberg Institut für Mineralogie und Petrographie, University...different petrological settings. Introduction Nepheline with idealized formula Na3K[Al4Si4O16] is a key...thermometamorphic/metasomatic xenolithic ejecta. After bauxite, nepheline rocks are the second most important type of aluminium |  | | Journal (article/letter/editorial) | | analcime-leucite (e.g., Gatta et al. 2006, 2008a), nepheline-kalsilite (e.g., Gatta and Angel 2007; Gatta et...widespread both in intrusive igneous rocks, such as nepheline syenites, and in extrusive rocks, such as phonolites...to 1153 K, where decomposition to a mixture of nepheline + haüyne was observed. To the best of our knowledge...Fernando Càmara (University of Turin), Volker Kahlenberg (University of Innsbruck), Marco Merlini and...Pàl-Molnàr, E. (2007) Fluid evolution in the nepheline syenite of the Ditrau alkaline massif, Transylvania |  | Gatta, G. D., Rotiroti, N., Zanazzi, P.F., Rieder, M., Drabek, M., Weiss, Z., Klaska, R. (2008) Synthesis and crystal structure of the feldspathoid CsAlSiO4: An open-framework silicate and potential nuclear waste disposal phase. American Mineralogist, 93 (7) 988-995 doi:10.2138/am.2008.2729 | Journal (article/letter/editorial) | | Czech Republic 6 HeidelbergCement AG, Ennigerloh, Germany 1 Abstract Crystalline CsAlSiO4 was synthesized...known as reviewed by Baur and Fischer (2000) and Kahlenberg et al. (2001). Hahn et al. (1969) and Liebau...units (i.e., stuffed-tridymite structures, like nepheline and kalsilite). For a more reliable crystallographic...important rock-forming feldspathoids such as nepheline and kalsilite. The differences between the framework...and pressure-induced structural evolution of nepheline: Implications for the nature of the modulated |  | | Journal (article/letter/editorial) | | from miarolitic cavities and pegmatitic dykes in nepheline syenites (Mont StHilaire, Québec, Canada). Later...mineral in pegmatites and hydrothermalites from the nepheline syenite massifs of Khibiny and Lovozero (Kola... Belitsky thanks to associate editor Dr. V. Kahlenberg and two anonymous reviewers, who helped up to...for solving crystal structures. Univ. Göttingen, Germany. — (1997): SHELXL-97. Program for refinement of...of crystal structures. Univ. Göttingen, Germany. Received 14 January 2003 Modified version received 22 |  | | Journal (article/letter/editorial) | | e Preparation of Metallic Lithium,' by Louis Kahlenberg; metalic lithium can be obtained without difficulty...deposition of ores,' by Charles R. Van Hise. ' The nepheline syenite of the Wausau district,' by Samuel Weidman...Professor F. C . Sharp, Secretary ; Professor L. Kahlenberg, Librarian, both of t h e University of Wisconsin |  | | Journal (article/letter/editorial) | | e Preparation of Metallic Lithium,' by Louis Kahlenberg; metalic lithium can be obtained without difficulty...deposition of ores,' by Charles R. Van Hise. ' The nepheline syenite of the Wausau district,' by Samuel Weidman |  | 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) | | 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...and configurations of the rings. In tridymite, nepheline (NaAlSiO4), and kalsilite (KAlSiO4), there is...Ca2+ size and the topology of the UDUDUD rings (Kahlenberg 2001; Tait et al. 2010). At this time, krotite...Physics and Chemistry of Solids, 68, 1147–1151. Kahlenberg, V. (2001) On the Al/Fe substitution in iron |  | Perchiazzi, N., McDonald, A. M., Gault, R. A., Johnsen, O., Merlino, S. (2000) THE CRYSTAL STRUCTURE OF NORMANDITE AND ITS CRYSTAL-CHEMICAL RELATIONSHIPS WITH LAVENITE. The Canadian Mineralogist, 38 (3) 641-648 doi:10.2113/gscanmin.38.3.641 | Journal (article/letter/editorial) | | phenocrysts in nepheline syenite and free-standing crystals in miarolitic cavities in nepheline syenite (Chao...titanlåvenite and a fluorine-rich eucolite in a nepheline-syenite inclusion from Tenerife, Canary Islands...Acta Crystallogr. B34, 27-32. PIOTROWSKI, A., KAHLENBERG, V. & FISCHER, R.X. (1999): Na2Ca2(P2O7)F2, eine...Structures. University of Göttingen, Göttingen, Germany. SMITH, J.V. (1970): Physical properties of order–disorder |  | | Journal (article/letter/editorial) | | Cameroon, and a spectrum of cancrinite replacing nepheline in the Oktiabrski massif (Ukraine) was reported... or as a product of reaction between primary nepheline and volatile-rich melts or fluids (Deer et al...best-studied examples are those from Laacher See, Eifel, Germany (Chukanov et al., 2011; Pekov et al., 2011); Loch...(Fig. 2d), or as a secondary mineral replacing nepheline (Fig. 2b, e). Vishnevite occurs interstitially...0.005–0.015) and may be easily confused with nepheline (also uniaxial negative) or feldspars if not in |
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