Metasideronatrite

Formula:  Na2Fe(SO4)2(OH) . H2O

Origin of name:  From Greek meta - after and sideronatrite

 

Crystal system:  Orthorhombic

Crystal class:  222

Twinning: 

Unit cell: 

 

Colour:  Golden yellow to straw-yellow

Diaphaneity: 

Luster:  Silky

Habit:  Crystals prismatic, rare; coarse to fine crystalline aggregates

Hardness:  2.5

Specific gravity:  2.68

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

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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