Albaito (rock)

Japanese: アルバイト（岩石） - あるばいと

...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Ab_xAn_100－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Or_xAb_yAn_z(x＋y＋z＝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。…