Ferronordite-(Ce)

General Information: Chemical Formula:Na3SrCeFe++Si6O17 Composition:(Molecular Weight = 793.05 gm)Sodium 8.70 % NaStrontium 11.05 % SrCerium 17.67 % CeIron 7.04 % FeSilicon 21.25 % SiOxygen 34.30 % O  Empirical Formula: Na3SrCeFe2+Si6O17 Environment:In areas of ultra-alkaline mineralization in small cavities in pegmatoid sodalite syenites. In ussingite veinlets. IMA Status:Approved IMA (Dana # Added) Locality:Chinlusuia River, Lovozero Alkaline massif, Kola Peninsula, Russia. Name Origin:Named as the Fe++ dominant analogue of nordite-(Ce). Nordite series is named after the word for north because of its northern origin in the Lovozero Massif.Physical Properties: Cleavage:[100] Perfect Color:colorless or light coffee brown. Density:3.46 - 3.54, Average = 3.5 Diaphaniety:Transparent Habits:Rosette - Bundled tabular aggregates resembling rose flower petals., Aggregates - Made of numerous individual crystals or clusters., Hardness:5-5.5 - Apatite-Knife Blade Luminescence:Non-fluorescent. Luster:Vitreous (Glassy) Streak:whiteMore details...