VS
Name
—
(NH₄)₂Ni(SO₄)₂·6H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
1.85
Specific gravity
—
—
Streak
—
—
Luster
—
Imperfect
Cleavage
—
P2_1/n
Space group
—
Picromerite
Structural group
—
Nbsg · Approved
IMA
—
1975
Named in
—
Greenish blue to emerald-green; green in transmitted light
Typical colors
—
N · H · Ni · S · O
Elements
—