VS
Name
—
Fe²⁺₃(PO₄)₂·8H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
1.5–2
Mohs hardness
—
2.68
Specific gravity
—
White, altering to dark blue, brown
Streak
—
Vitreous, pearly on the cleavage, dull when earthy
Luster
—
Perfect on {010}
Cleavage
—
C2/m
Space group
—
Vivianite
Structural group
—
Viv · Grandfathered
IMA
—
1817
Named in
—
Green, Blue, Colorless
Typical colors
—
Fe · P · O · H
Elements
—