Formula: LiAlSiO4
Origin of name: From Greek for well concealed
Crystal system: Hexagonal
Crystal class: -3
Twinning:
Unit cell:
Colour: Colourless, white, tan
Diaphaneity: Transparent
Luster: Vitreous
Habit: Crystals euhedral, to large size; massive granular aggregates
Hardness: 6.5
Specific gravity: 2.66
Cleavage: 1; {10-11} indistinct
Tenacity:
Streak:
Synonyms/varieties:
Comments: Fluoresces pink under UV light
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