VS
Name
—
Fe²⁺₂(PO₄)F
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
5–5.5
Mohs hardness
—
3.89–3.97
Specific gravity
—
—
Streak
—
Vitreous to resinous
Luster
—
[On {001}, good; on {010}, fair; on {100}, poor] (by analogy to triplite)
Cleavage
—
I2/a
Space group
—
Triplite
Structural group
—
Zwi · Approved
IMA
—
1841
Named in
—
Dark brown, clove-brown, yellowish brown; brownish black to black if altered
Typical colors
—
Fe · P · O · F
Elements
—