Raman spectroscopic determination of Sr/Ca ratios of calcite samples | Zendy

Shibano Yusuke | Zendy; Takahata Kohei | Zendy; Kawano Jun | Zendy; Watanabe Tsuyoshi | Zendy; Enomoto Daisuke | Zendy; Kagi Hiroyuki | Zendy; Kamiya Natsumi | Zendy; Yamamoto Junji | Zendy

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Raman spectroscopic determination of Sr/Ca ratios of calcite samples

Author(s) -

Shibano Yusuke,

Takahata Kohei,

Kawano Jun,

Watanabe Tsuyoshi,

Enomoto Daisuke,

Kagi Hiroyuki,

Kamiya Natsumi,

Yamamoto Junji

Publication year - 2017

Publication title -

journal of raman spectroscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.748

H-Index - 110

eISSN - 1097-4555

pISSN - 0377-0486

DOI - 10.1002/jrs.5235

Subject(s) - raman spectroscopy , calcite , analytical chemistry (journal) , chemistry , mineralogy , physics , optics , chromatography

We investigated the relation between Sr# [= 100 Sr/(Sr + Ca) in mol] of calcites and their Raman spectra for Sr‐doped calcite samples with Sr# of 0–13.2. We selected 3 major Raman peaks observed at 150–155 cm −1 (peak A), 274–282 cm −1 (peak B), and 710–712.5 cm −1 (peak C). With increasing Sr#, the peaks shifted monotonously to lower wavenumbers. We obtained a linear expression for peak B as Sr# = −1.734 Δν B + 76.93, where Δν B is a separation between peak B and a neon emission line of 237.07 cm −1 in Raman shift. The present spectroscopic analysis can ascertain Sr# of calcite with precision of ±1.26 in the range of Sr# of 0–13.2.

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