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Title

A new classification of feldspars by luminescence spectral techniques

AuthorsGarcía-Guinea, Javier ; Sánchez Muñoz, Luis ; Correcher, Virgilio
Issue Date2007
CitationGranitic Pegmatites: The State of the Art – International Symposium. 06 th – 12 th May 2007 , Porto, Portugal
AbstractThe proposed luminescence classification of feldspars is found on the relationships between feldspar lattice defects and their coupled spectra luminescence peaks. The UV emission at 290 nm is linked with the presence of Na and cracks-strain-exsolution-twinning; at 340 nm with stress in Si¿O bonds; the broad blue band (380-450nm) with [AlO4]o defects; at 560nm with Mn2+ point defects and at 720nm with iron in the lattice. The feldspar classification here provided can be used as a practical guideline for pegmatite feldspar studies since the luminescence techniques are sensitive tools detecting defects.
URIhttp://hdl.handle.net/10261/82114
Appears in Collections:(MNCN) Comunicaciones congresos
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