Montanite

Formula:  Bi2TeO6 . 2H2O

Origin of name:  After locality; Montana

 

Crystal system:  Unknown

Crystal class:  Unknown

Twinning: 

Unit cell: 

 

Colour:  Yellowish, greenish to white

Diaphaneity:  Opaque

Luster:  Waxy to dull

Habit:  Massive, compact to earthy

Hardness:  1

Specific gravity:  3.79

Cleavage:  None

Tenacity: 

Streak: 

 

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