Coexists with Ti-enriched pyrrhotite in a fenitized xenolith in nepheline syenite.
IMA Status:
Approved IMA 1995 (Dana # Added)
Locality:
Kola Peninsula, northwestern Russia. Link to MinDat.org Location Data.
Name Origin:
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.
Chemical Formula: