General Information:
Chemical Formula:
(Na,La,Ca)(Nb,Ti)O3
Environment:
In a hydrothermally altered pegmatite vein cutting ijolite-urtite. A polymorph of lueshite.
IMA Status:
Approved IMA (Dana # Added)
Locality:
The Kukisvumchorr apatite deposit, southern part of the Khibina alkaline massif, Kola Peninsula, Russia.
Name Origin:
The name reflects its isometric habit, optical isotropism and compositional similarity to its orthorhombic polymorph, lueshite.
Physical Properties:
Cleavage:
None
Color:
brownish black.
Density:
4.72
Diaphaniety:
Opaque to subtranslucent
Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., ,
Hardness:
5.5 - Knife Blade
Luster:
Adamantine
Streak:
pale yellow
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