Albaito (rock)

Japanese: アルバイト(岩石) - あるばいと
Albaito (rock)

...The solid solution series between albite NaAlSi 3 O 8 (Ab) and anorthite CaAl 2 Si 2 O 8 (An) is collectively called plagioclase, and its composition is expressed as Ab x An 100- x . Depending on the composition range, it is given the following names:

From [Feldspar]

…The chemical composition is generally expressed as MT 4 O 8 , where M is Ca, Na, K, Ba, and T is Al, Si. Most naturally occurring feldspars belong to the ternary system with end members CaAl 2 Si 2 O 8 (anorthite, An), NaAlSi 3 O 8 (albite, Ab), and KAlSi 3 O 8 (potassium feldspar, Or), and their composition is expressed as Or x Ab y An z ( x + y + z = 100). The solid solution series between anorthite and albite is called plagioclase, and the solid solution series between albite and potassium feldspar is called alkali feldspar. …

*Some of the terminology explanations that mention "albite (rock)" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…アルバイトNaAlSi3O8(Ab)とアノーサイトCaAl2Si2O8(An)との間の固溶系列を総称して斜長石と呼び,組成をAbxAn100-xで表す。組成範囲によって次のような名が与えられている。…

【長石】より

…化学組成は,一般にMT4O8で表され,MはCa,Na,K,Ba,またTはAl,Siである。天然に産する長石は,ほとんどCaAl2Si2O8(アノーサイト,An),NaAlSi3O8(アルバイト,Ab),KAlSi3O8(カリ長石,Or)を端成分とする三成分系に属し,その組成はOrxAbyAnz(xyz=100)のように表現される。アノーサイトとアルバイトの間の固溶系列を斜長石,アルバイトとカリ長石の間の固溶系列をアルカリ長石と呼ぶ。…

※「アルバイト(岩石)」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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