Hydrodresserite

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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