Ralstonite
Pronunciation : Ral"ston*ite
Part of Speech : n.
Etymology : [So named after J. G. Ralston of Norristown, Penn.] (Min.)
Definition : Defn: A fluoride of alumina and soda occurring with the Greenland cryolite in octahedral crystals.
Source : Webster's Unabridged Dictionary, 1913