Wiktionary英語版

出典:Wiktionary

cervandonite

出典:『Wiktionary』 (2012/12/31 18:11 UTC 版)

語源

Named after the location where it was first described, Pizzo Cervandone (Scherbadung), Italy in the Central Alps, +‎ -ite.

名詞

cervandonite (countable かつ uncountable; 複数形 cervandonites)

  1. (鉱物学) A rare arsenosilicate mineral.
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ウィキペディア英語版

出典:Wikipedia

Cervandonite

出典:『Wikipedia』 (2011/05/02 01:15 UTC 版)

英語による解説

ウィキペディア英語版からの引用
引用

Cervandonite is a rare arseonosilicate mineral, it has a chemical formula (Ce,Nd,La)(Fe3+,Fe2+,Ti4+,Al)3SiAs(Si,As)O13 or (Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH). It has a monoclinic crustal structure with supercell (Z=6), the crystal structure was established as a trigonal subcell, with space group R3m and a = 6.508(1)Ǻ, c = 18.520(3) Ǻ, V 679.4(2) Ǻ3, and Z=3. It was first described by Buhler Armbruster in 1988, but it has proven to be problem due to the extreme scarcity of single crystals and its unusual replacement of silicon and arsenic. Cervandonite is named after the location where it was first described, Pizzo Cervandone (Scherbadung), Italy in the Central Alps.

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