Formula: Al(OH)3
Origin of name: For E. Doyle
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: White, creamy white, bluish white
Diaphaneity: Transparent to opaque
Luster: Vitreous, pearly or dull
Habit: Crystals tabular or platy in rosettes
Hardness: 2.5 to 3
Specific gravity: 2.48
Cleavage: 2; {010} perfect, {100} fair
Tenacity:
Streak: White
Synonyms/varieties:
Comments: Polymorphous with bayerite, gibbsite and nordstrandite
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