Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of hauynite is as below...

Hauynite :: Hauynite (n.) A blue isometric mineral, characteristic of some volcani/ rocks. It is a silicate of alumina, lime, and soda, with sulphate of lime..

Phonolite :: Phonolite (n.) A compact, feldspathic, igneous rock containing nephelite, hauynite, etc. Thin slabs give a ringing sound when struck; -- called also clinkstone..

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