VS
Name
—
(Na,Ca,K)₈(Si₆Al₆)O₂₄(SO₄)₂Cl·0.5H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
5–5.5
Mohs hardness
—
2.557
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
{1010}, fair
Cleavage
—
P6_222
Space group
—
Cancrinite-sodalite
Structural group
—
Tou · Approved
IMA
—
1990
Named in
—
Yellowish bottle-green, may be tinted blue by included lazurite; colorless in thin section
Typical colors
—
Na · Ca · K · Si · Al · O · S · Cl · H
Elements
—