VS
Name
—
Na₅Zr₂Si₆O₁₈(Cl,OH)·2H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–5.5
Mohs hardness
—
2.88
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Perfect on {110}, very good on {010}, and distinct on {001}
Cleavage
—
P2_1/m
Space group
—
—
Structural group
—
Pra · Approved
IMA
—
1979
Named in
—
Light to dark greenish yellow, yellow, dark yellow, pale yellowish brown, brown; in transmitted light
Typical colors
—
Na · Zr · Si · O · Cl · H
Elements
—