Strategies for Quantification of Light Elements in Minerals by SIMS: H, B and F |
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Authors: | Luisa Ottolini Fernando Cámara Frank C Hawthorne |
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Institution: | (1) CNR – Istituto di Geoscienze e Georisorse (IGG), Sezione di Pavia, Via Ferrata 1, I-27100 Pavia, Italy;(2) Department of Geological Sciences, University of Manitoba, MB R3T 2N2 Winnipeg, Canada |
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Abstract: | Using a large set of silicate crystals, characterized by Structure REFinement (SREF), Electron Probe Micro-Analysis (EPMA)
and Secondary Ion Mass Spectrometry (SIMS), and mounted with known crystallographic orientation 1], we propose a new SIMS
quantification for H, B and F (from ppm level to several wt.%), using 27Al+ and 44Ca+, in turn, as the reference isotope for the matrix, and propose suitable calibration standards to obtain accurate results.
The final SIMS data are then compared to those obtained using Si as the reference element, with those available from EMPA
(B and F), and with the crystallographic constraints derived from SREF investigation. The results of this study can be extended
to the measurement of light elements in complex silicate or non-silicate samples. |
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Keywords: | : SIMS calibration procedures crystallographic orientation light and volatile elements silicates |
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