Formula: CaAl2(CO3)2(OH)4.6H2O
Origin of name: from Greek para = similar and alumohydrotalcite
Crystal system: unknown
Crystal class: unknown
Twinning:
Unit cell:
Colour: white
Diaphaneity:
Luster:
Habit: radial fibrous
Hardness: 1.7 to 1.8
Specific gravity: 2.0
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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