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A secondary ion mass spectrometry (SIMS) re-evaluation of B and Li isotopic compositions of Cu-bearing elbaite from three global localities

Cu-bearing elbaite from Paraíba (Brazil) is a highly-prized gem tourmaline. Specimens of similar quality from localities in Mozambique and Nigeria are being sold, and reliable provenance tools are required to distinguish specimens from the original locality from ‘Paraíba-type’ tourmaline from Afri...

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Bibliographische Detailangaben
Hauptverfasser: Ludwig, Thomas (VerfasserIn) , Marschall, Horst R. (VerfasserIn) , Strandmann, P. A. E. Pogge von (VerfasserIn) , Shabaga, B. M. (VerfasserIn) , Fayek, M. (VerfasserIn) , Hawthorne, F. C. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2011
In: Mineralogical magazine
Year: 2011, Jahrgang: 75, Heft: 4, Pages: 2485-2494
ISSN:1471-8022
DOI:10.1180/minmag.2011.075.4.2485
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1180/minmag.2011.075.4.2485
Verlag, lizenzpflichtig, Volltext: https://www.cambridge.org/core/journals/mineralogical-magazine/article/abs/secondary-ion-mass-spectrometry-sims-reevaluation-of-b-and-li-isotopic-compositions-of-cubearing-elbaite-from-three-global-localities/4B2D4DC443EA45A1308E54B8C580BD0D#article
Volltext
Verfasserangaben:T. Ludwig, H.R. Marschall, P.A.E. Pogge von Strandmann, B.M. Shabaga, M. Fayek, F.C. Hawthorne
Beschreibung
Zusammenfassung:Cu-bearing elbaite from Paraíba (Brazil) is a highly-prized gem tourmaline. Specimens of similar quality from localities in Mozambique and Nigeria are being sold, and reliable provenance tools are required to distinguish specimens from the original locality from ‘Paraíba-type’ tourmaline from Africa. Here we present Li and B isotope analyses of Cu-bearing elbaite from all three localities and demonstrate the suitability of these isotope systems as a provenance tool. Isotopic profiles across chemically zoned grains revealed homogenous B and Li isotopic compositions, demonstrating a strong advantage of their application as a provenance tool as opposed to major, minor or trace element signatures.Li and B isotopes of all investigated samples of Cu-bearing elbaites from the three localities are within the range of previously published granitic and pegmatitic tourmaline. Anomalous isotope compositions published previously for these samples are corrected by our results.
Beschreibung:Elektronische Reproduktion der Druck-Ausgabe
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Beschreibung:Online Resource
ISSN:1471-8022
DOI:10.1180/minmag.2011.075.4.2485

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