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anorthoclase

[an-awr-thuh-kleys, -kleyz]
noun Mineralogy.
  1. a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of orthoclase.
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Origin of anorthoclase

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

anorthoclase in Science

anorthoclase

[ăn-ôrthə-klās′]
  1. 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.
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