- (of rocks) consisting chiefly of feldspars, feldspathoids, quartz, and other light-colored minerals.
Origin of felsic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Word Origin and History for felsic
Online Etymology Dictionary, © 2010 Douglas Harper
- Relating to an igneous rock that contains a group of light-colored silicate minerals, including feldspar, feldspathoid, quartz, and muscovite. Compare mafic.
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