Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
2018 Annual Meeting of Japan Association of Mineralogical Sciences
Session ID : R1-P14
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R1: Characterization and description of minerals
Bismuth minerals from Ishidera, Wazuka, Kyoto Prefecture, Japan
*Yohei ShiroseSatomi EnjuKenji TsurutaNorimasa Shimobayashi
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Abstract

Bi-minerals were discovered from quartz veins in the Ishidera area, Wazuka, Kyoto Prefecture, Japan. Native bismuth occurs with a rim consisted of bismite, bismoclite-daubreeite, and bismutite. Yellow veins also occur near the native bismuth. The XRD pattern corresponds to russellite; however, EPMA analysis shows that the ratio of Bi:W is 3:1. In TEM analysis, the russellite-like mineral is susceptible to electron beam, and hexagonal platy crystals 10 nm in diameter are formed and grown.

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© 2018 Japan Association of Mineralogical Sciences
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