See Also: felsic(dictionary)
felsic rock(encyclopedia)

felsic (iou)



felsic adjective. E20.
[Contr. of FELDSPAR and SILICA: see -IC.]
Geology. Of, pertaining to, or designating a group of light-coloured minerals including feldspars, feldspathoids, quartz, and muscovite; (of rock) containing a high proportion of such minerals. Cf. MAFIC.