Found in igneous breccias and nepheline syenite pegmatites.
IMA Status:
Approved IMA 2001 (Dana # Added)
Locality:
Poudrette quarry, Mont Saint-Hilaire Link to MinDat.org Location Data.
Name Origin:
Named for Robert (Bob) James Traill (1921-), mineralogist, former head of the mineralogy section of the Geological Survey of Canada (1953-1986), and for his contributions to mineral ogy.