VS
Name
—
SrAl₃(PO₄)(PO₃OH)(OH)₆
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Hexagonal
Crystal system
—
4.5–5
Mohs hardness
—
3.26
Specific gravity
—
—
Streak
—
Greasy to resinous, pearly on cleavages
Luster
—
Perfect on {0001}
Cleavage
—
R-3m
Space group
—
Alunite-crandallite
Structural group
—
Goy · Approved
IMA
—
1884
Named in
—
Colorless, pink, lilac, honey-yellow, orange; colorless in transmitted light
Typical colors
—
Sr · Al · P · O · H
Elements
—