Tysonite

• (n.) A fluoride of the cerium metals occurring in hexagonal crystals of a pale yellow color. Cf. Fluocerite.
Found on http://thinkexist.com/dictionary/meaning/tysonite/

Tysonite

Tysonite, named after S. T. Tyson, is a fluoride of the cerium metals occurring in hexagonal crystals of a pale yellow colour.
Found on http://www.probertencyclopaedia.com/browse/HT.HTM
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