bytownite
Noun
Meaning
bytownite (usually uncountable, plural bytownites)
(mineralogy) A plagioclase feldspar, the fifth member of the Albite-Anorthite solid solution series. Bytownite is rare, and normally occurs in small grains in lime-rich igneous rocks. Clear pale yellow crystals have come from Mexico and Oregon.
Synonyms
feldspar
natrolite
plagioclase
albite
anorthite
nepheline
oligoclase
syenite
perthite
amazonite
sanidine
microcline
leucite
andesine
trachyte
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