felsite

English

Noun

felsite (plural felsites)

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.

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

Synonyms

• eurite

Anagrams

• Fleites, fileset, lefties, liefest