Formula: (Zn,Al)3(Si,Al)2O5(OH)4
Origin of name: For J. and C. Fraipont, Belgian paleontologists and mineralogists
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Yellowish white
Diaphaneity:
Luster: Silky
Habit: Massive; fibrous forming thin crusts
Hardness: 3.5 to 4
Specific gravity: 3.09
Cleavage: None
Tenacity:
Streak: White to pale green
Synonyms/varieties:
Comments:
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