VS
Name
—
CaMn²⁺Fe²⁺₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
4
Mohs hardness
—
2.86
Specific gravity
—
—
Streak
—
[Vitreous to subadamantine.]
Luster
—
[Good on {001}] [by analogy to jahnsite-(CaMnMg)]
Cleavage
—
—
Space group
—
Jahnsite
Structural group
—
Jah-CaMnFe · Approved
IMA
—
1978
Named in
—
Yellow-brown
Typical colors
—
Ca · Mn · Fe · P · O · H
Elements
—