Abstracts of annual meeting of The Clay Science Society of Japan
Online ISSN : 2433-0582
Print ISSN : 2433-0566
ISSN-L : 2433-0566
53rd Annual Meeting of The Clay Science Society of Japan
Session ID : A1
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Host: The Clay Science Society of Japan

Yangzhumingite, KMg2.5Si4O10F2, a new mineral from Bayan Obo, Inner Mongolia, China
*Ritsuro Miyawaki, Hidehiko Shimazaki, Masako Shigeoka, Kazumi Yokoyama, Satoshi Matsubara, Hisayoshi Yurimoto
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Abstract

Yangzhumingite occurs in metamorphosed carbonate rock from Bayan Obo, Inner Mongolia, China. Electron micoprobe and SIMS anlyses gave an emprical formula as (K0.70Li0.30Na0.01)(Mg2.48Fe0.06)(Si3.96Al0.03)O10[F1.92(OH)0.08]. Yangzhumingite is monoclinic (C2/m) with lattice parameters of a = 5.249(4), b = 9.095(5), c = 10.142(5) Å, β = 99.96(6)˚, V = 476.9(5)Å3 and Z = 2.

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