Crystal orientation effects in δ18O for magnetite and hematite by SIMS

@inproceedings{Huberty2010CrystalOE,
  title={Crystal orientation effects in δ18O for magnetite and hematite by SIMS},
  author={Jason M. Huberty and Noriko T. Kita and Reinhard Kozdon and Philipp R Heck and John H. Fournelle and Michael J. Spicuzza and Huifang Xu and John W. Valley},
  year={2010}
}
Abstract In situ high precision analysis of oxygen isotope ratios ( δ 18 O) by secondary ion mass spectrometry (SIMS) reveals that instrumental bias in δ 18 O for magnetite varies due to crystal orientation effects. Multiple analyses of δ 18 O have an average precision of ± 0.4‰ (2SD) in single grains of magnetite, close to ± 0.3‰, that obtained for multiple grains of UWQ-1, a homogeneous quartz standard. In contrast, the average precision is five to ten times worse, ± 2–3‰ (2SD), from grain-to… CONTINUE READING

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