VS
Name
—
ZnMn²⁺Fe²⁺₂Fe³⁺(PO₄)₃(OH)₂(H₂O)₇·2H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Orthorhombic
Crystal system
—
4
Mohs hardness
—
2.87–2.92
Specific gravity
—
Pale brown
Streak
—
Subvitreous to waxy
Luster
—
{010}, perfect; {001}, good
Cleavage
—
Pmab
Space group
—
Calcioferrite-Schoonerite
Structural group
—
Soo · Approved
IMA
—
1976
Named in
—
Pale tan to brown, greenish brown, yellowish brown; copper-red to bronzy on exposure
Typical colors
—
Zn · Mn · Fe · P · O · H
Elements
—