新鉱物ランタンバナジウム褐簾石の結晶構造

永嶌 真理子; 浜根 大輔; 冨田 宣光; 皆川 鉄雄; 稲葉 幸郎

doi:10.14824/jakoka.2013.0_99

2013 Annual Meeting of Japan Association of Mineralogical Sciences

Session ID : R2-17

DOI https://doi.org/10.14824/jakoka.2013.0_99

Conference information

Host: Japan Association of Mineralogical Sciences

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

Crystal structure of Vanadoallanite-(La): a new epidote-group mineral

*Mariko Nagashima, Daisuke Nishio-Hamane, Norimitsu Tomita, Tetsuo Minakawa, Sachio Inaba

Author information

Keywords: vanadoallanite-(La), epidote-group mineral, Ise City, rare earth, new mineral

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Abstract

The new mineral, vanadoallanite-(La), found in the stratiform ferromanganese deposit from the Shobu area, Ise City, Mie Prefecture, Japan, is a V- and REE-rich epidote-group mineral with simplified formula CaLaV³⁺AlFe²⁺(SiO₄)(Si₂O₇)O(OH) (Z = 2, space group P2₁/m). Structural refinement converged to R₁ = 2.96%. The unit-cell parameters are a = 8.8985(2), b = 5.7650(1), c = 10.1185(2) Å, b = 114.120(1)º and V = 473.76(2) Å³. High Mn²⁺ content at A1 (0.39 apfu) also characterized this specimen.

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