Manandonite

Formula: Li₂Al₄(Si₂AlB)O₁₀(OH)₈

Origin of name:  From locality; Manandona River, Madagascar

Crystal system:  Orthorhombic

Crystal class:  1

Twinning: 

Unit cell: 

Colour:  Colourless

Diaphaneity:  Transparent

Luster:  Pearly

Habit:  Lamellar aggregates; crusts of hexagonal plates

Hardness:  ~ 2.5

Specific gravity:  2.89

Cleavage:  1; {001} perfect, micaceous

Tenacity: 

Streak: 

Synonyms/varieties:

Comments:  Easily fusible