Felsite

Full definition of felsite

Noun

1. (mineral) A fine grained volcanic extrusive rock, generally light in color, composed of felsic minerals.The buff-colored dacites of the Superstition Mountains are felsites.
2. (geology) Any light-colored volcanic rock whose true mineralogy is not yet determined.

Synonyms

• eurite

Anagrams

• lefties, liefest