VS
Name
—
NaFe³⁺₉₊ₓ(PO₄)₆(OH)₁₁·3H₂O (x ≈ 0.33)
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
3
Mohs hardness
—
3.3
Specific gravity
—
Yellow
Streak
—
Silky
Luster
—
Perfect on {100}
Cleavage
—
P2/c
Space group
—
—
Structural group
—
Kdw · Approved
IMA
—
1974
Named in
—
Bright yellow to greenish yellow, pale chartreuse-green, greenish white; colorless in transmitted light
Typical colors
—
Na · Fe · P · O · H
Elements
—