The Collaborative International Dictionary
Sassolin
Sassolin \Sas"so*lin\, Sassoline \Sas"so*line\, n. [From Sasso, a town in Italy: cf. F. sassolin.] (Min.) Native boric acid, found in saline incrustations on the borders of hot springs near Sasso, in the territory of Florence.
Wiktionary
sassolin
n. (alternative form of sassoline English)