含水準輝石族鉱物におけるLi↔Na置換と水素結合システム

永嶌 真理子; 今岡 照喜; 福田 千紘; Pettke Thomas

doi:10.14824/jakoka.2016.0_67

2016 Annual Meeting of Japan Association of Mineralogical Sciences

Session ID : R2-02

DOI https://doi.org/10.14824/jakoka.2016.0_67

Conference information

Host: Japan Association of Mineralogical Sciences

R2: Crystal structure, crystal chemistry, physical properties of minerals, crystal growth and applied mineralogy

The relation between Li ↔ Na substitution and H-bond system in 3-periodic hydropyroxenoids

*Mariko Nagashima, Teruyoshi Imaoka, Chihiro Fukuda, Thomas Pettke

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Keywords: pyroxenoid, Li, Hydrogen bond, Pectolite

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

Hydropyroxenoids with 3-periodic single-chains of SiO₄, simplified formula (Li, Na)(Ca, Mn)₂[Si₃O₈(OH)], from five localities were studied to examine the relation between Li-Na substitution and H-bond system. The substitution of smaller Li⁺ ion for Na⁺ gives an influence on the geometry polyhedra, and changes the bond valence sums of neighboring oxygens and hydrogen bonding system.

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