Much of the southern half of the southeastern body is a mafic syenite, slightly more felsic than the shonkinite.
Source: wiktionary
Felsic
Synonyms for "felsic"
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Sample sentences
5 total sentences available.
Within comagmatic suites, successively younger granitoids are commonly, but not invariably, more felsic, representing progressively lower temperature mineral assemblages.
Source: wiktionary
The Claret Creek Supersuite granites are a little more felsic (65-77% SiO₂), and are chemically distinctive, having higher Al₂O₃, CaO, Na₂O and Sr, and lower K₂O, Rb, Th and U than the granites of the Almaden Supersuite.
Source: wiktionary
The central part of this nepheline syenite is very white felsics with black mafics in it. The entire area contains many nepheline-bearing dike rocks, but almost all are gray or pink or even red due to the color in the felsics.
Source: wiktionary
Showing 4 of 5 available sentences.