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VS
J
Name
—
Mn³⁺Mn²⁺₃(AsO₄)(OH)₆
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Orthorhombic
Crystal system
—
4
Mohs hardness
—
3.66
Specific gravity
—
Reddish orange
Streak
—
Subvitreous on fractured surfaces
Luster
—
—
Cleavage
—
—
Space group
—
—
Structural group
—
Jrw · Approved
IMA
—
1981
Named in
—
Very dark red, appearing black
Typical colors
—
Mn · As · O · H
Elements
—