Mohrite

Formula:  (NH4)2Fe(SO4)2 . 6H2O

Origin of name:  For Karl Mohr, German chemist

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning: 

Unit cell: 

 

Colour:  Pale green

Diaphaneity: 

Luster:  Vitreous

Habit:  Crystals quasi-euhedral, minute; irregular laminae

Hardness

Specific gravity:  1.800 to 1.862

Cleavage:  2; {-102} perfect, {010} distinct

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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