felsic

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Related to Felsic mineral: Felsic magma

fel·sic

 (fĕl′sĭk)
adj.
Relating to or containing a group of light-colored silicate minerals that occur in igneous rocks, including minerals of the feldspathoid group and the minerals quartz, feldspar, and muscovite.

felsic

(ˈfɛlsɪk)
adj
(of minerals) predominantly composed of feldspars or silicates
References in periodicals archive ?
Amphibole-pyroxene andesite has pale-grey colour with macroscopically visible phenocrysts of mafic and felsic minerals (Figs.
A new road cut exposes granite characterized by alternating layers of high concentrations of mafic minerals (schlieren) and high concentrations of felsic minerals.