Jonesite

Formula:  Ba4(K,Na)2Ti4Al2Si10O36 . 6H2O

Origin of name:  For Francis Jones, American collector

 

Crystal system:  Orthorhombic

Crystal class:  222

Twinning: 

Unit cell: 

 

Colour:  Colourless

Diaphaneity: 

Luster: 

Habit:  Rosettes

Hardness:  3 to 4

Specific gravity:  3.25

Cleavage:  None

Tenacity: 

Streak: 

 

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Comments: 

 

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