VS
Name
—
Na₂Sr₂Al₂(PO₄)F₉
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
4–5
Mohs hardness
—
3.66
Specific gravity
—
—
Streak
—
Vitreous, greasy on fracture surfaces
Luster
—
Prismatic, possible
Cleavage
—
P2_1/c
Space group
—
—
Structural group
—
Bgg · Grandfathered
IMA
—
1951
Named in
—
Flesh-red; in transmitted light, colorless to slightly reddish in thicker grains
Typical colors
—
Na · Sr · Al · P · O · F
Elements
—