Liberite

Formula:  Li2BeSiO4

Origin of name:  Combination of symbols for elements

 

Crystal system:  Monoclinic

Crystal class:  m

Twinning: 

Unit cell: 

 

Colour:  Pale yellow to brown

Diaphaneity: 

Luster:  Vitreous on cleavage, slightly oily on fractures

Habit:  Minute aggregates, may show  pinacoidal faces

Hardness:  7 o 7.4

Specific gravity:  2.69

Cleavage:  3; {010} perfect; {100} and {001} distinct

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

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