English Dictionary

felsite

noun

(mineralogy) A fine grained volcanic extrusive rock, generally light in color, composed of felsic minerals. / (geology) Any light-colored volcanic rock whose true mineralogy is not yet determined.

Felsite is a type of igneous rock.

意味（1）

(mineralogy) A fine grained volcanic extrusive rock, generally light in color, composed of felsic minerals.

The buff-colored dacites of the Superstition Mountains are felsites.

意味（2）

(geology) Any light-colored volcanic rock whose true mineralogy is not yet determined.