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[an-awr-thuh-kleys, -kleyz] /ænˈɔr θəˌkleɪs, -ˌkleɪz/
noun, Mineralogy.
a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of orthoclase.
Origin of anorthoclase Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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anorthoclase in Science
A white to colorless triclinic mineral of the alkali feldspar group. It is a common constituent in the matrices of slightly alkaline volcanic rocks. Chemical formula: (Na,K)AlSi3O8.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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