Potassic-aluminotaramite from Sierra de los Filabres. (Articolo in rivista)

Type
Label
  • Potassic-aluminotaramite from Sierra de los Filabres. (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Oberti R.; Boiocchi M.; Smith D.C.; Medenbach O.; Helmers H. (2008)
    Potassic-aluminotaramite from Sierra de los Filabres.
    in European journal of mineralogy (Print)
    (literal)
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  • Oberti R.; Boiocchi M.; Smith D.C.; Medenbach O.; Helmers H. (literal)
Pagina inizio
  • 1005 (literal)
Pagina fine
  • 1010 (literal)
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  • 20 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
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  • Roberta OBERTI1,*, Massimo BOIOCCHI2, David C. SMITH3,4, Olaf MEDENBACH5 and Henk HELMERS6 1 CNR-Istituto di Geoscienze e Georisorse, unità di Pavia, via Ferrata 1, 27100 Pavia, Italy *Corresponding author, e-mail: oberti@crystal.unipv.it 2 Centro Grandi Strumenti, Università di Pavia, via Bassi 21, 27100 Pavia, Italy 3 Laboratoire LEME/Nanoanalysis, USM0205, Muséum National d'Histoire Naturelle, 61 Rue Buffon, 75005 Paris 4 France & Laboratoire de Tectonique, CNRS UMR7072, Université Paris VI, 4 Place Jussieu, 75005, Paris, France 5 Institut für Geologie, Mineralogie und Geophysik, Ruhr-Universität Bochum, 44780 Bochum, Germany 6 Presently retired at Leersum, 3956 TH, Netherlands (literal)
Titolo
  • Potassic-aluminotaramite from Sierra de los Filabres. (literal)
Abstract
  • Potassic-aluminotaramite, ideally AK (CaNa) B(Fe2+3 Al2) C(Si6Al2) O22 W(OH)2, has been found in a meta-monzonite rock sampled at Sierra de los Filabres, S.E. Spain; the paragenesis that contains the amphibole is mainly formed by feldspar, quartz, and clinopyroxene. This paper reports a complete mineral description and crystal-structure details for this new taramite end-member that has been recognised by IMA-CNMMC with the vote 2007-015. Holotype potassic-aluminotaramite has the experimental unit formula A(Na0.34K0.66)?°1.00 B(Fe2+ 0.01 Na0.85 Ca1.14)?°2.00 C(Fe2+2.80 Mg0.33 Al1.26 Fe3+ 0.46Ti0.05Mn0.10)T ?°5.00(Si6.01 Al1.99)?°8.00 O22W(OH1.96 F0.03 Cl0.01)?°2.00; a = 9.8505(5), b = 18.0075(9), c =5.3518(3) A, ?À = 104.775(4), V = 917.9(2) A3; Dcalc = 3.40 g/cm3. Optics: biaxial (.); ?¿ 1.686(1), ?À 1.703(3), ?Á 1.706(3) (?É =589 nm). The ten strongest reflections in the X-ray powder pattern [d values (in A), I, (hkl)] are: 8.420, 100, (110); 2.714, 75.03, (151); 2.565, 59.62, (.202); 3.127, 52.54, (310); 2.596, 49.03, (061); 3.400, 37.92, [(131) (041)]; 2.166, 33.71, [(261) (.332)]; 2.340, 32.38, (.351); 2.956, 24.79, (221); 2.297, 24.57, [(.171) (.312)]. (literal)
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