phonolite

1 definition found

phonolite - Collaborative International Dictionary of English v.0.48 :

  Phonolite \Pho"no*lite\, n. [Phono- + -lite: cf. F. phonolithe.]
     (Min.)
     A compact, feldspathic, igneous rock containing nephelite,
     ha["u]ynite, etc. Thin slabs give a ringing sound when
     struck; -- called also clinkstone.
     [1913 Webster]