VS
Name
—
Zn₃(AsO₄)₂·8H₂O
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Monoclinic
Crystal system
—
2–3
Mohs hardness
—
3.33
Specific gravity
—
White to reddish white
Streak
—
Silky on cleavages
Luster
—
On {010}, perfect
Cleavage
—
C2/m
Space group
—
Vivianite
Structural group
—
Köt · Grandfathered
IMA
—
1850
Named in
—
White, colorless; light carmine, peach-blossom-red (cobaltian); blue, grayish blue (ferroan)
Typical colors
—
Zn · As · O · H
Elements
—