VS
Name
—
Mn²⁺Mn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
4
Mohs hardness
—
2.625
Specific gravity
—
Very pale yellow
Streak
—
Vitreous
Luster
—
Good on {001}
Cleavage
—
P2/a
Space group
—
Jahnsite
Structural group
—
Jah-MnMnMg · Approved
IMA
—
2018
Named in
—
Yellow to honey-colored or greenish yellow
Typical colors
—
Mn · Mg · Fe · P · O · H
Elements
—