sanidine

About 0.05 uses per million words.

Meaning

1. noun A variety of orthoclase feldspar found as tabular crystals embedded in volcanic rocks. Some forms (called moonstone) exhibit adularescence.

Similar words

adularia glassy feldspar anorthoclase sidorenkite andesine thernadite nepheline essonite sunstone salite

Often followed by

and is basalt phenocrysts crystals in from or to