perthite

noun

perth·​ite

ˈpərˌthīt

plural -s

: a feldspar rock consisting of orthoclase or microcline in which is interlaminated albite

perthitic

ˈpər¦thitik

adjective

perthitically

-tə̇k(ə)lē

adverb

Word History

Etymology

Perth, Ontario, Canada + English -ite

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