VS
Name
—
Fe²⁺₂(PO₄)(OH)
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
4.5–5
Mohs hardness
—
3.79–3.82
Specific gravity
—
—
Streak
—
Vitreous to silky if fibrous
Luster
—
{100}, good; {120}, fair; {010}, poor; {110}, very poor
Cleavage
—
P2_1/a
Space group
—
Wagnerite
Structural group
—
Wol · Grandfathered
IMA
—
1949
Named in
—
Reddish brown, pinkish brown, clove-brown, pale brown
Typical colors
—
Fe · P · O · H
Elements
—