Magnesium isotopic homogeneity of San Carlos olivine: a potential standard for Mg isotopic analysis by multi-collector inductively coupled plasma mass spectrometry

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• 作者：Yan Hu ; Melissa D. Harrington ; Yang Sun ; Zhe Yang ; Jasper Konter and Fang-Zhen Teng
• 刊名：Rapid Communications in Mass Spectrometry
• 出版年：2016
• 出版时间：15 October 2016
• 年：2016
• 卷：30
• 期：19
• 页码：2123-2132
• 全文大小：631K
• ISSN：1097-0231

文摘

Previous analyses on San Carlos olivine from Arizona (USA) have shown inter-laboratory δ²⁶Mg differences of up to 0.67‰, while mantle olivine samples worldwide are homogeneous at a current analytical uncertainty of ~0.1‰. The differing measurements on San Carlos olivine may be attributable to analytical artifacts or sample heterogeneity. The latter must be ruled out before using it as a standard for Mg isotopic analysis.