VS
Name
—
Ni₃(AsO₄)₂·8H₂O
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Monoclinic
Crystal system
—
1.5–2.5
Mohs hardness
—
3.07
Specific gravity
—
Pale green to white
Streak
—
Subadamantine, pearly on cleavages, may be dull, earthy
Luster
—
{010}, perfect; {100}, {102}, indistinct
Cleavage
—
C2/m
Space group
—
Vivianite
Structural group
—
Anb · Grandfathered
IMA
—
1852
Named in
—
Green, Yellow, White
Typical colors
—
Ni · As · O · H
Elements
—