Khibinskite

Formula:  K2ZrSi2O7

Origin of name:  After locality; Khibina massif, Kola Penninsula, Russia

 

Crystal system:  Monoclinic, pseudotrigonal

Crystal class:  2 or m or 2/m

Twinning: 

Unit cell: 

 

Colour:  Pale yellowish to white

Diaphaneity: 

Luster:  Dull to greasy

Habit:  Ovoids, up to 3 cm

Hardness:  4.5 to 5.5

Specific gravity:  3.40

Cleavage:  None

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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