Formula: K6Al4Si8O25 . 2H2O
Origin of name: From Greek lithos (stone)
Crystal system: Monoclinic, pseudo-orthorhombic
Crystal class: 2
Twinning:
Unit cell:
Colour: Colourless
Diaphaneity: Transparent
Luster: Vitreous
Habit: Irregular grains, 1-3 mm
Hardness: 5.5
Specific gravity: 2.51
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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