The Collaborative International Dictionary
Idrialine
Idrialine \Id"ri*a*line\, Idrialite \Id"ri*a*lite\, n. [Cf. F. idrialine.] (Min.) A bituminous substance obtained from the mercury mines of Idria, where it occurs mixed with cinnabar.
Wiktionary
idrialine
n. (context mineralogy English) An alternate name for idrialite.