Anorthoclase
a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of .
anorthoclase
(ān-ôr’thə-klās’)
a white to colorless triclinic mineral of the alkali feldspar group. it is a common const-tuent in the matrices of slightly alkaline volcanic rocks. chemical formula: (na,k)alsi3o8.
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