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High‐Mg# Olivine, Clinopyroxene and Orthopyroxene Reference Materials for In Situ Oxygen Isotope Determination
Author(s) -
Tang GuoQiang,
Su BenXun,
Li QiuLi,
Xia XiaoPing,
Jing JieJun,
Feng LianJun,
Martin Laure,
Yang Qing,
Li XianHua
Publication year - 2019
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/ggr.12288
Subject(s) - isotopes of oxygen , olivine , isotope , microanalysis , analytical chemistry (journal) , secondary ion mass spectrometry , fractionation , mineralogy , oxygen , geology , in situ , isotope fractionation , mass spectrometry , chemistry , geochemistry , environmental chemistry , chromatography , physics , organic chemistry , quantum mechanics
Secondary ion mass spectrometry (SIMS) requires matrix‐matched reference materials to calibrate mass fractionation during oxygen isotope measurement. Over one thousand SIMS oxygen isotope measurements were conducted on eleven natural mineral samples (five olivines, three clinopyroxenes and three orthopyroxenes) in nineteen sessions using CAMECA IMS 1280 SIMS instruments to evaluate their potential as SIMS reference materials. The obtained results reveal oxygen isotope homogeneity of these samples. No matrix effect was measured for the same variety of mineral samples with limited Mg‐number variations (89.6–94.2, 90–91.9 and 90.1–92.1 for olivine, clinopyroxene and orthopyroxene, respectively). The recommended oxygen isotope compositions of these samples were determined using laser fluorination. These samples are therefore suitable to be used as reference materials for in situ oxygen isotope microanalysis.