Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-22T17:00:21.189Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  05 July 2018

T. Ludwig ,
H. R. Marschall ,
P. A. E. Pogge von Strandmann ,
B. M. Shabaga ,
M. Fayek  and
F. C. Hawthorne
T. Ludwig*
Affiliation:
Institute of Earth Sciences, Heidelberg University, Im Neuenheimer Feld 234–36, 69120 Heidelberg, Germany
H. R. Marschall
Affiliation:
Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol BS8 1RJ, UK Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
P. A. E. Pogge von Strandmann
Affiliation:
Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol BS8 1RJ, UK
B. M. Shabaga
Affiliation:
Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
M. Fayek
Affiliation:
Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
F. C. Hawthorne
Affiliation:
Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
*
*E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

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.

Keywords

tourmalineisotopesParaíbalithiumboronsecondary ion mass spectrometry (SIMS)ion probeLA-ICP-MS
Type
Research Article
Information
Mineralogical Magazine , Volume 75 , Issue 4 , August 2011 , pp. 2485 - 2494
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Beurlen, H., Trumbull, R.B., Wiedenbeck, M. and Soares, D.R. (2011) Boron-isotope variations in tourmaline from granitic pegmatites of the Borborema Pegmatite Province, NE-Brazil. Asociación Geológica Argentina, Serie D, Publication Especial, 14, 37—39.Google Scholar
Bryant, C.J., Chappell, B.W., Bennett, V.C. and McCulloch, M.T. (2004) Lithium isotopic compositions of the New England Batholith: correlations with inferred source rock compositions. Transactions of the Royal Society of Edinburgh: Earth Sciences, 95, 199–214.CrossRefGoogle Scholar
Catanzaro, E.J., Champion, C.E., Garner, E.L., Marinenko, G., Sappenfield, K.M. and Shields, W.R. (1970) Boric acid: isotopic and assay standard reference materials. National Bureau of Standards (US) Special Publications, 260-17, 1–71.Google Scholar
Dyar, M.D., Wiedenbeck, M., Robertson, D., Cross, L.R., Delaney, J.S., Ferguson, K., Francis, C.A., Grew, E.S., Guidotti, C.V., Hervig, R.L., Hughes, J.M., Husler, J., Leeman, W.P., McGuire, A.V., Rhede, D., Rothe, H., Paul, R.L., Richard, I. and Yates, M. (2001) Reference minerals for micro-analysis of light elements. Geostandards Newsletter: The Journal of Geostandards and Geoanalysis, 25, 441–463.CrossRefGoogle Scholar
Flesch, G.D., Anderson, A.R. and Svec, H.J. (1973) A secondary isotopic standard for 6Li/7Li determinations. International Journal of Mass Spectrometry and Ion Processes, 12, 265—272.Google Scholar
James, R.H. and Palmer, M.R. (2000) The lithium isotope composition of international rock standards. Chemical Geology, 166, 319–326.CrossRefGoogle Scholar
Jeffcoate, A.B., Elliott, T., Thomas, A. and Bouman, C. (2004) Precise, small sample size determinations of lithium isotopic compositions of geological reference materials and modern seawater by MC-ICP-MS. Geostandards and Geoanalytical Research, 28, 161–172.CrossRefGoogle Scholar
Jiang, S.-Y. (1998) Stable and radiogenic isotope studies of tourmaline: an overview. Journal of the Czech Geological Society, 43, 75–90.Google Scholar
Jiang, S.-Y. (2006) Reply to ‘Re-examination of the boron isotopic composition of tourmaline from the Lavicky granite, Czech Republic, by secondary ion mass spectrometry: back to normal’ by H.R. Marschall and T. Ludwig: Critical comment on ‘Chemical and boron isotopic compositions of tourmaline from the Lavicky leucogranite, Czech Republic’ Geochemical Journal, 40, 639—641.CrossRefGoogle Scholar
Jiang, S-Y., Yang, J-H., Novak, M. and Selway, J. (2003) Chemical and boron isotopic compositions of tourmaline from the Lavicky leucogranite, Czech Republic. Geochemical Journal, 37, 545—556.CrossRefGoogle Scholar
Kasemann, S.A., Jeffcoate, A.B. and Elliott, T. (2005) Lithium isotope composition of basalt glass refer-ence material. Analytical Chemistry, 77, 5251—5257.CrossRefGoogle Scholar
Leeman, W.P. and Tonarini, S. (2001) Boron isotopic analysis of proposed borosilicate mineral reference samples. Geostandards Newsletter, 25, 399—403.CrossRefGoogle Scholar
Liu, X.-M., Rudnick, R.L., Hier-Majumder, S. and Sirbescu, M.-L.C. (2010) Processes controlling lithium isotopic distribution in contact aureoles: A case study of the Florence County pegmatites, Wisconsin. Geochemistry Geophysics Geosystems, 11, DOI: 10.1029/2010GC003063.CrossRefGoogle Scholar
Magna, T., Janousek, V., Kohut, M., Oberli, F. and Wiechert, U. (2010) Fingerprinting sources of orogenic plutonic rocks from Variscan belt with lithium isotopes and possible link to subduction-related origin of some A-type granites. Chemical Geology, 274, 94–107.CrossRefGoogle Scholar
Maloney, J.S., Nabelek, P.I., Sirbescu, M.-L. and Halama, R. (2008) Lithium and its isotopes in tourmaline as indicators of the crystallization process in the San Diego County pegmatites, California, USA. European Journal of Mineralogy, 20, 905–916.CrossRefGoogle Scholar
Marks, M.A.W., Rudnick, R.L., Ludwig, T., Marschall, H., Zack, T., Halama, R., McDonough, W.F., Rost, D., Wenzel, T., Vicenzi, E.P., Savov, I.P., Altherr, R. and Markl, G. (2008) Sodic pyroxene and sodic amphibole as potential reference materials for in situ lithium isotope determinations by SIMS. Geostandards and Geoanalytical Research, 32, 295–310.CrossRefGoogle Scholar
Marschall, H.R. and Ludwig, T. (2006) Re-examination of the boron isotopic composition of tourmaline from the Lavicky granite, Czech Republic, by secondary ion mass spectrometry: back to normal. Critical comment on “Chemical and boron isotopic compositions of tourmaline from the Lavicky leucogranite, Czech Republic” by Jian, S.-Y.. et al, Geochemical Journal, 37, 545–556. 2003. Geochemical Journal, 40, 631-638.Google Scholar
Marschall, H. R., Ludwig, T., Altherr, R., Kalt, A. and Tonarini, S. (2006) Syros metasomatic tourmaline: evidence for very high-δnB fluids in subduction zones. Journal of Petrology, 47, 1915–1942.CrossRefGoogle Scholar
Marschall, H.R., Pogge von Strandmann, P.A.E., Seitz, H.-M., Elliott, T. and Niu, Y. (2007) The lithium isotopic composition of orogenic eclogites and deep subducted slabs. Earth and Planetary Science Letters, 262, 563–580.CrossRefGoogle Scholar
Marschall, H.R., Meyer, C, Wunder, B., Ludwig, T. and Heinrich, W. (2009) Experimental boron isotope fractionation between tourmaline and fluid: confirmation from in situ analyses by secondary ion mass spectrometry and from Rayleigh fractionation modelling. Contributions to Mineralogy and Petrology, 158, 675–681.CrossRefGoogle Scholar
Peretti, A., Bieri, W.P., Reusser, E., Hametner, K. and Günther, D. (2010) Chemical variations in multi-coloured “Paraiba“-type tourmalines from Brazil and Mozambique: Implications for origin and authenticity determination. Contributions to Gemology, 9, 1–77.Google Scholar
Rosner, M., Wiedenbeck, M. and Ludwig, T. (2008) Composition-induced variations in SIMS instrumental mass fractionation during boron isotope ratio measurements of silicate glasses. Geostandards and Geoanalytical Research, 32, 27—38.CrossRefGoogle Scholar
Rossman, G.R. (2009) The geochemistry of gems and its relevance to gemology: different traces, different prices. Elements, 5, 159—162.CrossRefGoogle Scholar
Rossman, G.R., Fritsch, E. and Shigley, J.E. (1991) Origin of color in cuprian elbaite from Sao Jose de Batalha, Paraiba, Brazil. American Mineralogist, 76, 1479–1484.Google Scholar
Shabaga, B.M., Fayek, M. and Hawthorne, F.C. (2010) Boron and lithium isotopic compositions as provenance indicators of Cu-bearing tourmalines. Mineralogical Magazine, 74, 241—255.CrossRefGoogle Scholar
Teng, F.Z., McDonough, W.F., Rudnick, R.L., Walker, R.J. and Sirbescu, M.L.C. (2006) Lithium isotopic systematics of granites and pegmatites from the Black Hills, South Dakota. American Mineralogist, 91, 1488–1498.CrossRefGoogle Scholar
Tomascak, P.B. (2004) Developments in the under-standing and application of lithium isotopes in the Earth and planetary sciences. Pp. 153 — 195 in: Geochemistry of Non-traditional Stable Isotopes (C.M., Johnson, Beard, B.L. and Albarede, F., editors). Reviews in Mineralogy and Geochemistry, 55. Mineralogical Society of America, Washington DC and the Geochemical Society, St Louis, Missouri, USA.CrossRefGoogle Scholar
Trumbull, R.B., Slack, J.F., Krienitz, M.-S., Belkin, H.E. and Wiedenbeck, M. (2011) Fluid sources and metallogenesis in the Blackbird Co—Cu—Au—Bi—Y— REE district, Idaho, U.S.A.: insights from major-element and boron isotopic compositions of tourmaline. The Canadian Mineralogist, 49, 225–244.CrossRefGoogle Scholar
van Hinsberg, V.J., Henry, D.J. and Marschall, H.R. (2011) Tourmaline: an ideal indicator of its host environment. The Canadian Mineralogist, 49, 1—16.CrossRefGoogle Scholar
Supplementary material: File

Ludwig et al. supplementary material

Electronic supplement

Download Ludwig et al. supplementary material(File)
File 113.7 KB