Coexists with Ti-enriched pyrrhotite in a fenitized xenolith in nepheline syenite.
Approved IMA 1995 (Dana # Added)
Kola Peninsula, northwestern Russia. Link to MinDat.org Location Data.
Named after Alan D. Edgar (1935-1998), Professor of Petrology, University of Western Ontario, London, Ontario, Canada, in recognition of his contributions to the study of alkaline r ocks and synthetic equivalents.