VS
Name
—
Ca₄MgFe³⁺₄(PO₄)₆(OH)₄·12H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
2.51–2.53
Specific gravity
—
Sulfur-yellow to white
Streak
—
Pearly on cleavages
Luster
—
One, perfect, parallel foliation; another, interrupted, perpendicular to the first; a third, also interrupted, oblique to the first
Cleavage
—
C2/c
Space group
—
Calcioferrite
Structural group
—
Cfr · Grandfathered
IMA
—
1858
Named in
—
Sulfur-yellow, greenish yellow to siskin-green, yellowish white; yellow in transmitted light
Typical colors
—
Ca · Mg · Fe · P · O · H
Elements
—