Ilsemannite

Formula:  Mo3O8 . nH2O

Origin of name:  For J. Ilsemann, German mining official

 

Crystal system:  Amorphous

Crystal class:  Unknown

Twinning: 

Unit cell: 

 

Colour:  Blue, blue-black, black

Diaphaneity: 

Luster: 

Habit:  Massive; earthy crusts; stains

Hardness

Specific gravity

Cleavage:  None

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments:  Readily soluble in water yielding a deep blue coloured solution

 

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