Anorthoclase Definition
ăn-ôrthə-klās
noun
A white to colorless triclinic mineral of the alkali feldspar group that contains a higher proportion of sodium than potassium and is a common constituent in the matrices of slightly alkaline volcanic rocks.
American Heritage
Other Word Forms of Anorthoclase
Noun
Singular:
anorthoclase
Plural:
anorthoclasesOrigin of Anorthoclase
-
Greek an- not a–1 orthos straight klasis a breaking (from its having two planes of cleavage intersecting at a slightly oblique angle) orthoclase
From American Heritage Dictionary of the English Language, 5th Edition
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