General Information:
Chemical Formula:
Na3SrCeFe++Si6O17
Composition:
(Molecular Weight = 793.05 gm)
Sodium 8.70 % Na
Strontium 11.05 % Sr
Cerium 17.67 % Ce
Iron 7.04 % Fe
Silicon 21.25 % Si
Oxygen 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:
white
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