felsicadj.
/ˈfɛlsɪk/ Mineralogy.
Of or pertaining to such light-coloured minerals as the feldspars, the feldspathoids, quartz, and muscovite, or to rocks containing a high proportion of these or similar minerals.
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > rock > mineral or chemical composition > [adjective] > containing specific mineral
siliceous1656
auriferous1744
siliciferous1794
silicited1794
talcose1794
aluminiferous1804
silicated1806
venigenous1817
stanniferous1823
alumiferous1826
quartziferous1831
quartzofeldspathic1839
stannified1855
tinnified1855
acidic1876
lime-silicate1888
peralkalic1902
potassic1902
sodic1902
sodipotassic1902
felsic1912
peralkaline1913
peraluminous1927
the world > the earth > minerals > types of mineral > silicates > tectosilicate > [adjective] > quartz or feldspar
felsic1912
the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [adjective] > mica > muscovite varieties
sericite1854
sericitic1880
felsic1912
1912 W. Cross et al. in Jrnl. Geol. (Chicago) 20 561 We suggest the term felsic for the group of modal feldspars, feldspathoids, and quartz.
1965 G. J. Williams Econ. Geol. N.Z. iv. 38/1 The host-rock is a splintery siliceous bluish-grey slate with some micaceous, talcose and felsic facies.
This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).
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adj.1912