Formula: Ca2SiO3(OH)2
Origin of name: For W. HIllebrand, American geochemist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Porcelain white, greenish
Diaphaneity:
Luster:
Habit: Crystals fibrous, radiating
Hardness: 5.5
Specific gravity: 2.66
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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