Ban-1 Zircon: A New Natural Zircon Reference Material for LA-MC-ICP-MS Zr and Hf Isotopic Determinations |
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| Authors: | Jin-Cheng Xie Di-Cheng Zhu Qing Wang Liang-Liang Zhang Feng Cong Fei Nie Ying-Huai Lu Li Liu |
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| Institution: | 1. State Key Laboratory of Geological Processes and Mineral Resources, and Institute of Earth Sciences, China University of Geosciences, Beijing, 100083 China;2. State Key Laboratory of Geological Processes and Mineral Resources, and School of Earth Science and Resources, China University of Geosciences, Beijing, 100083 China;3. Chengdu Center, China Geological Survey, Chengdu, 610081 China;4. Applied Geological Survey Center, China Geological Survey, Chengdu, 610036 China |
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| Abstract: | New zircon reference materials for in situ zircon radiogenic Hf isotope and stable Zr isotopic determinations made by laser ablation multi-collector inductively coupled plasma-mass spectrometry (LA-MC-ICP-MS) are required due to high data productivity and consequently high reference material consumption rate. This study examines a new natural zircon for Zr isotope ratios by double spike thermal ionisation mass spectrometry (TIMS), and for Hf isotopes by bulk solution nebuliser (SN)-MC-ICP-MS with both Zr and Hf determined by LA-MC-ICP-MS. A total of five zirconium isotope measurements from drilled zircons, determined by TIMS, yield a mean δ94/90ZrIPGP-Zr value of -0.09 ± 0.06‰ (2s). Five and eight hafnium isotope measurements for powders from the drilled zircons and Ban-1-4 by SN-MC-ICP-MS, yield mean 176Hf/177Hf ratios of 0.282985 ± 0.000011 (2s) and 0.282982 ± 0.000007 (2s), respectively. The mean δ94/90ZrIPGP-Zr value and 176Hf/177Hf ratio determined by LA-MC-ICP-MS analyses are -0.06 ± 0.09‰ (2s, n = 504) and 0.282985 ± 0.000035 (2s, n = 327), respectively. The isotopic homogeneities suggest that the Ban-1 zircon is a suitable reference material for microbeam Zr and Hf isotopic measurements. |
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| Keywords: | zircon reference material Zr isotope Hf isotope LA-MC-ICP-MS |
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