felsic

About 0.12 uses per million words.

Meaning

1. adjective Enriched in minerals predominantly composed of the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium.
2. noun A rock with such properties.

Similar words

volcanic feldspathic peralkaline felspathic felsitic feldspatholithic leucocratic feldspathose feldspathoid acidic

Often followed by

volcanic rocks volcanics and igneous minerals magmas magma to rock