VS
Name
—
Na₈(Al₆Si₆)O₂₄(SO₄)·2H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
5–6
Mohs hardness
—
2.32–2.42
Specific gravity
—
—
Streak
—
—
Luster
—
Perfect on {1010}, poor on {0001}
Cleavage
—
P6_3
Space group
—
Cancrinite, Cancrinite-sodalite
Structural group
—
Vhn · Grandfathered
IMA
—
1944
Named in
—
Pale lilac, light blue to dark gray
Typical colors
—
Na · Al · Si · O · S · H
Elements
—