01 n. A mineral of the feldspar family, triclinic in crystallization, and in composition a silicate of alumina and soda. It is a common constitue…
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A mineral of the feldspar family, triclinic in crystallization, and in composition a silicate of alumina and soda. It is a common constituent of granite and of various igneous rocks. See Feldspar.(Min.) See: Feldspar