Formula: Na3(Ce,La)4(Ti,Nb)2(SiO4)2(CO3)3O4(OH).2H2O
Origin of name: after locality Lovozero tundra, Russia
Crystal system: triclinic
Crystal class: 1
Twinning:
Unit cell:
Colour: brownish yellow to greenish yellow
Diaphaneity:
Luster: vitreous
Habit: crystals acicular to 5 mm, spherulites to 15 mm
Hardness: about 3
Specific gravity: 3.70
Cleavage: none
Tenacity:
Streak: yellowish gray
Synonyms/varieties:
Comments: two distinct species with the extensions -(Ce) and -(Nd) indicating the predominant rare earth element in the formula
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