Skip to content

A new appraisal of Sri Lankan BB zircon as a reference material for LA-ICP-MS U-Pb geochronology and Lu-Hf isotope tracing

Research output: Contribution to journalArticlepeer-review

  • Maristella M. Santos
  • Cristiano Lana
  • Ricardo Scholz
  • Ian Buick
  • Mark D. Schmitz
  • Sandra L. Kamo
  • Axel Gerdes
  • Fernando Corfu
  • Simon Tapster
  • Penelope Lancaster
  • Professor Craig Storey
  • Miguel A. S. Basei
  • Eric Tohver
  • Ana Alkmim
  • Herminio Nalini
  • Klaus Krambrock
  • Cristiano Fantini
  • Michael Wiedenbeck
A potential zircon reference material (BB zircon) for laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) U-Pb geochronology and Hf isotope geochemistry is described. A batch of twenty zircon megacrysts (0.5–1.5 cm3) from Sri Lanka was studied. Within-grain rare earth element (REE) compositions are largely homogeneous, albeit with some variation seen between fractured and homogeneous domains. Excluding fractured cathodoluminescence bright domains, the variation in U content for all analysed crystals ranged from 227 to 368 μg g−1 and the average Th/U ratios were between 0.20 and 0.47. The Hf isotope composition (0.56–0.84 g/100 g Hf) is homogeneous within and between the grains – mean 176Hf/177Hf of 0.281674 ± 0.000018 (2s). The calculated alpha dose of 0.59 × 1018 g−1 for a number of BB grains falls within the trend of previously studied, untreated zircon samples from Sri Lanka. Aliquots of the same crystal (analysed by ID-TIMS in four different laboratories) gave consistent U-Pb ages with excellent measurement reproducibility (0.1–0.4% RSD). Interlaboratory assessment (by LA-ICP-MS) from individual crystals returned results that are within uncertainty equivalent to the TIMS ages. Finally, we report on within- and between-grain homogeneity of the oxygen isotope systematic of four BB crystals (13.16‰ VSMOW).
Original languageEnglish
JournalGeostandards and Geoanalytical Research
Early online date14 Mar 2017
Publication statusEarly online - 14 Mar 2017


  • A new appraisal of Sri Lankan BB Zircon

    Rights statement: This is the peer reviewed version of the following article: Santos, M. M., Lana, C., Scholz, R., Buick, I., Schmitz, M. D., Kamo, S. L., Gerdes, A., Corfu, F., Tapster, S., Lancaster, P., Storey, C. D., Basei, M. A.S., Tohver, E., Alkmim, A., Nalini, H., Krambrock, K., Fantini, C. and Wiedenbeck, M. (2017), A New Appraisal of Sri Lankan BB Zircon as a Reference Material for LA-ICP-MS U-Pb Geochronology and Lu-Hf Isotope Tracing. Geostand Geoanal Res. doi:10.1111/ggr.12167, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

    Accepted author manuscript (Post-print), 3.1 MB, PDF document

Related information

Relations Get citation (various referencing formats)

ID: 7058723