VS
Name
—
NaNaFe²⁺(Fe²⁺Al)(PO₄)₃
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
4
Mohs hardness
—
3.601
Specific gravity
—
Dirty olive-green
Streak
—
Oily to submetallic
Luster
—
On {010}, perfect; on {101}, distinct
Cleavage
—
P2_1/n
Space group
—
Alluaudite-Wyllieite
Structural group
—
Fwyl · Approved
IMA
—
1979
Named in
—
Deep bluish green, oily green, grayish green, greenish black; pale green in transmitted light
Typical colors
—
Na · Fe · Al · P · O
Elements
—