Nickel-boussingaultite

Formula: (NH4)2(Ni,Mg)(SO4)2.6H2O

Origin of name: from nickel and boussingaultite

 

Crystal system: monoclinic

Crystal class: unknown

Twinning: 

Unit cell: 

 

Colour: yellow-green, greenish blue

Diaphaneity: 

Luster: 

Habit: prismatic grains, smaller than 0.01 mm, thin films

Hardness: 2.5

Specific gravity: 1.85

Cleavage: 1; imperfect

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: Ni analogue of boussingaultite

 

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