albite

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albite

(ăl`bīt): see feldsparfeldspar
or felspar
, an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.
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albite

[′al‚bīt]
(mineralogy)
NaAlSi3O8 A colorless or milky-white variety of plagioclase of the feldspar group found in granite and various igneous and metamorphic rocks. Also known as sodaclase; sodium feldspar; white feldspar; white schorl.
References in periodicals archive ?
One of these is made up of medium/fine-grained xenomorphic assemblage comprising epidote chlorite titanite quartz and albitic plagioclase.
Perthitic texture is typically present, and albitic lamellae have compositions similar to those of separate plagioclase grains in the rock.
Plagioclase is albitic in most samples and relict clinopyroxene is normally preserved.
Biotite-rich gneiss with quartz and up to 25% albitic plagioclase make up some of the metapelitic interbeds within the siliceous marble.
Compositions are more anorthitic in the southern plutons and become more albitic in the northern p]utons (Fig.