Formula: NaHSi2O4(OH)2 . 2H2O
Origin of name: After locality; Kanem region, Lake Chad, Chad
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Colourless to white
Diaphaneity:
Luster: Silky
Habit: Spherulitic aggregates, 1.5 - 2 mm
Hardness: 4
Specific gravity: 1.93
Cleavage: 2; {010} perfect, {100} good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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