VS
Name
—
(NH₄)(AlSi₃)O₈
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5.5
Mohs hardness
—
2.32
Specific gravity
—
Light grey, yellow when impure
Streak
—
Vitreous
Luster
—
Good on {001}, distinct on {010}
Cleavage
—
C2/m
Space group
—
Feldspar
Structural group
—
Bud · Approved
IMA
—
1963
Named in
—
Colorless
Typical colors
—
N · H · Al · Si · O
Elements
—