Lovdarite

Formula:  K₂Na₆Be₄Si₁₄O₃₆ ^. 9H₂O

Origin of name:  From Russian for gift of Lovozero, in reference to locality

Crystal system:  Orthorhombic

Crystal class:  mm2

Twinning: 

Unit cell: 

Colour:  Colourless, white to yellowish

Diaphaneity: 

Luster:  Vitreous

Habit:  Crystals prismatic; granular aggregates

Hardness:  5 to 6

Specific gravity:  4; {100}, {010} and {001} distinct, {110} poor

Cleavage: 

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