Fervanite

Formula:  Fe4(VO4)4 . 5H2O

Origin of name:   From iron (Laitn ferrum) and vanadium

 

Crystal system:  Monoclinic

Crystal class:  Unknown

Twinning:

Unit cell: 

 

Colour:  Golden brown

Diaphaneity:

Luster:  Brilliant

Habit:  Fibrous

Hardness:

Specific gravity:

Cleavage:  None

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments:

 

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