Barringtonite

Formula:  MgCO3 . 2H2O

Origin of name:  After locality; Barrington Tops, New South Wales, Australia

 

Crystal system:  Triclinic

Crystal class:  1 or -1

Twinning:

Unit cell:

 

Colour:  Colourless

Diaphanteity:

Luster:

Habit:  As minute nodules with radiating fibrous or acicular form

Hardness:

Specific gravity:  2.85

Cleavage:  3; {001}, {100}, {010} distinct

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:

 

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