Käännöksiä ei löytynyt valitulle kohdekielelle.
(mineralogy) A rare earth mineral.
Thomasclarkite-(Y) Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada (Locality at mindat.org) Field of view 4 mm. Specimen and photo Leon Hupperichs.