Lovozerite

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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