Formula: Na(Sr,Ca)2Al5Si5O20·6H2O
Origin of name: Named as the Sr dominant analog of thomsonite-Ca.
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 13.05, b = 13.123, c = 13.241
Colour: Colourless
Diaphaneity: Transparent
Luster: Vitreous
Habit: Prismatic
Hardness: 5
Specific gravity: 2.47
Cleavage:
Tenacity: Brittle
Streak: White
Synonyms/varieties:
Comments:
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