felsic
Americanadjective
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Relating to an igneous rock that contains a group of light-colored silicate minerals, including feldspar, feldspathoid, quartz, and muscovite.
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Compare mafic
Etymology
Origin of felsic
First recorded in 1910–15; fel(dspar) + s(ilica) + -ic
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Example Sentences
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Figure 3.13 Examples of the igneous rocks that form from mafic, intermediate, and felsic magmas.
From Textbooks ● Jan. 1, 2015
Figure 3.12 The chemical compositions of typical mafic, intermediate, and felsic magmas and the types of rocks that form from them.
From Textbooks ● Jan. 1, 2015
The compositions of typical mafic, intermediate, and felsic magmas are shown in Figure 3.12.
From Textbooks ● Jan. 1, 2015
Magmas range in composition from ultramafic to felsic.
From Textbooks ● Jan. 1, 2015
As has already been described, igneous rocks are classified into four categories, based on either their chemistry or their mineral composition: felsic, intermediate, mafic, and ultramafic.
From Textbooks ● Jan. 1, 2015
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
