VS
Name
—
SrAl₃(SO₄)(PO₄)(OH)₆
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Trigonal
Crystal system
—
5
Mohs hardness
—
3.2–3.24
Specific gravity
—
—
Streak
—
Vitreous to adamantine
Luster
—
On {0001}, distinct
Cleavage
—
R-3m
Space group
—
Alunite-beudantite
Structural group
—
Svb · Approved
IMA
—
1854
Named in
—
Colorless, cream-yellow, rose, reddish brown; colorless in transmitted light
Typical colors
—
Sr · Al · S · O · P · H
Elements
—