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Webster 1913 Edition

Noun.

[

Phono-

-lite

: cf. F.

phonolithe

(Min.)

A compact, feldspathic, igneous rock containing nephelite, haüynite, etc. Thin slabs give a ringing sound when struck; – called also

clinkstone

Noun.

[Gr. sound, and stone.] Sounding stone; a name proposed as a substitute for klingstein [jingling stone.]

An aegirine phonolite stone

phonolite ‎(plural phonolites)

(mineralogy) a light-coloured rock of volcanic origin composed mostly of alkali feldspars

light-coloured rock