Potassic-magnesio-fluoro-arfvedsonite
Highway 366 roadcut, Val-des-Monts, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada
Fluoro-potassic-magnesio-arfvedsonite. Blackish blue. FOV 8 cm. See Parent photo for details.
From Highway 366 roadcut, Val-des-Monts, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada.
Photo and collection: Roy Kristiansen.
© Roy Kristiansen