Molysite

Formula:  FeCl3

Origin of name:  From Greek for stain

 

Crystal system:  Hexagonal

Crystal class:  -3

Twinning: 

Unit cell: 

 

Colour:  Yellow to brownish red, purplish

Diaphaneity: 

Luster: 

Habit:  Massive, coatings

Hardness:  1

Specific gravity:  2.904

Cleavage:  1; {0001} perfect

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments:  Deliquescent; rapidly decomposes

 

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