Para-alumohydrocalcite

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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