General Information:
Chemical Formula:
(Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
Environment:
Sodalite syenite pegmatite.
IMA Status:
Approved IMA 1987
Locality:
Near the Chinglusuai River and Motchusuai River, Lovozero Massif, Kola Pininuula, Russia.
Name Origin:
Analog to the La-dominant nordite-(La) which was named after the word for north because of its northern origin in the Lovozero Massif.
Physical Properties:
Cleavage:
[010] Distinct
Color:
light brown, dark brown, or blackish brown.
Density:
6.43 - 6.49, Average = 6.46
Diaphaniety:
Translucent
Habits:
Fibrous - Crystals made up of fibers., Aggregates - Made of numerous individual crystals or clusters., Lamellar - Thin laminae producing a lamellar structure.
Hardness:
5 - Apatite
Luster:
Vitreous - Greasy
Streak:
light brown
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