Formula: 3SiO2.H2O
Origin of name: from composition
Crystal system: orthorhombic
Crystal class: unknown
Twinning:
Unit cell:
Colour: white
Diaphaneity:
Luster:
Habit: crystals smaller than 4 micron, crystalline masses, punky, light, porous
Hardness: about 1
Specific gravity: 2.141
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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