Formula: Na2Ca(Zr,Ti)Si(O,OH)18
Origin of name: Locality; Lovozero massif, Kola Peninsula, Russia
Crystal system: Monoclinic
Crystal class: 2
Twinning:
Unit cell:
Colour: Reddish brown to dark brown to black
Diaphaneity: Opaque
Luster: Resinous
Habit: Massive; irregular grains; pseudomorphs of eudialyte
Hardness: 5
Specific gravity: 2.3 to 2.7
Cleavage: 2
Tenacity:
Streak: Brown
Synonyms/varieties:
Comments:
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