VS
Name
—
(Na,K)₂₂Ca₁₀(Si₂₄Al₂₄)O₉₆(SO₄)₆Cl₆
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
5.5–6
Mohs hardness
—
2.55
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
Perfect on {1010}
Cleavage
—
P31c
Space group
—
Cancrinite-sodalite
Structural group
—
Afg · Approved
IMA
—
1967
Named in
—
Blue; in thin section, colorless
Typical colors
—
Na · K · Ca · Si · Al · O · S · Cl
Elements
—