Abstract of Papers Presented at Annual Meeting of the Gemmological Society of Japan
2019 Annual Meeting
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Host: The Gemmological Society of Japan

Abstracts of Lectures at 2019 Annual Meeting of the Gemmological Society of Japan
Relationship between OH or F contents and reflective indices of topaz
*Chihiro Fukuda, Tomohiko Miyazaki
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Keywords: Topaz, LIBS, OH, F
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Pages 13

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Abstract

Topaz is one of the common gemstone and known as the birth stone of November. It can divide into two type; OH-type and F type. In this study, we investigate chemical composition using LIBS, to measure directly H and F content. And we discus about relationship between OH or F contents and reflective indices.

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© 2019 The Gemmological Society of Japan
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