Formula: BaAl2(CO3)2(OH)4 . 3H2O
Origin of name: From Greek hydor - water and dresserite
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Colourless, white
Diaphaneity:
Luster: Vitreous
Habit: Crystals fibrous, radiating, forming spheres and hemispheres
Hardness: 3 to 4
Specific gravity: 2.80
Cleavage: 2; {010} and {2-10} perfect
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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