Tysonite Ty"son*ite, n. [After S. T. Tyson.] (Min.) A fluoride of the cerium metals occurring in hexagonal crystals of a pale yellow color. Cf. {Fluocerite}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • tysonite — ty·son·ite …   English syllables

  • tysonite — ˈtīsənˌīt noun ( s) Etymology: S.T. Tyson 19th century American naturalist + English ite : fluocerite …   Useful english dictionary

  • bastnaesite — /bast neuh suyt /, n. a rare earth mineral, fluorocarbonate of lanthanum and cerium, with a waxy yellow to reddish brown color, commonly associated with zinc ores. Also, bastnäsite. [named after Bastnäs, mine in Sweden; see ITE1] * * * ▪ mineral… …   Universalium

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  • SUPERCONDUCTEURS IONIQUES — La matière peut prendre différents états (plasma, gaz, liquide, solide) qui se différencient par leur densité, leur capacité thermique massique et, en particulier, la valeur du coefficient de diffusion des espèces constituantes: atomes, ions,… …   Encyclopédie Universelle

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