Ilmajokite

Formula:  (Na,Ce,Ba)2TiSi3O5(OH)10 . nH2O

Origin of name:  Locality; Ilmajok River, Kola Pen. Russia

 

Crystal system:  Monoclinic

Crystal class:  Unknown

Twinning: 

Unit cell: 

 

Colour:  Bright yellow

Diaphaneity: 

Luster:  Vitreous

Habit:  Crystals tiny, in crusts; granular

Hardness:  1

Specific gravity:  2.20

Cleavage:  2; Perfect on rhombic prism and pinacoid

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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