English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/155837
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

First terrestrial occurrence of the complex phosphate chladniite: crystal-structure refinement by synchrotron through-the-substrate microdiffraction

AutorVallcorba, Oriol ; Casas, Lluís; Colombo, Fernando; Frontera, Carlos ; Rius, Jordi
Palabras clavetts-μXRD
Chladniite
Complex phosphates
Fillowite group
Polished thin section
Synchrotron radiation
Meteorites
Pegmatites
Thin glass substrates
Crystal structure refinement
Fecha de publicaciónmay-2017
EditorSchweizerbart science publishers
CitaciónEuropean Journal of Mineralogy 29 (2): 287-293 (2017)
ResumenChladniite, a complex phosphate species belonging to the fillowite group so far only found in meteorites, was identified in a pegmatite from Córdoba (Argentina) as inclusions in beusite. Applying synchrotron through-the-substrate microdiffraction technique (tts-μXRD) to polished thin sections prepared on very thin glass substrates (0.1 mm), diffraction data with nearly single-crystal quality were directly measured at selected chladniite microvolumes of the section. Chladniite is trigonal (space group R-3), with a = 15.0133(3) Å, c = 42.887(2) Å, V = 8371.6(5) Å3. The subsequent crystal structure refinement confirms that the accuracy attainable by using 0.1 mm thick glass-substrates is comparable to that of routine single-crystal measurements [R1=3.34% for 1617 unique reflections]. The refined crystal structure of pegmatitic chladniite differs from meteoritic one in the cation ordering (Mg, Fe+Mn and Ca) at the various metal sites, with Mn being dominant at the M(1) position.
Versión del editorhttp://dx.doi.org/10.1127/ejm/2017/0029-2590
URIhttp://hdl.handle.net/10261/155837
DOI10.1127/ejm/2017/0029-2590
ISSN0935-1221
E-ISSN1617-4011
Aparece en las colecciones: (ICMAB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Vallcorba_EurJMiner_2017.pdfArtículo principal561,6 kBAdobe PDFVista previa
Visualizar/Abrir
Vallcorba_EurJMiner_2017_suppl.pdfInformación complementaria369,47 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.