stillwellite
Noun
Meaning
stillwellite (uncountable)
English Wikipedia has an article on:stillwelliteWikipedia
(mineralogy) A trigonal-pyramidal rare earth borosilicate mineral.
Noun
stillwellite (uncountable)
English Wikipedia has an article on:stillwelliteWikipedia
(mineralogy) A trigonal-pyramidal rare earth borosilicate mineral.