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VS
Vlasovite
Name
—
Na₂ZrSi₄O₁₁
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6
Mohs hardness
—
2.92–2.97
Specific gravity
—
—
Streak
—
Greasy; highly vitreous to pearly on cleavage surfaces
Luster
—
{010}, good; fh0lg, poor
Cleavage
—
C2/c
Space group
—
—
Structural group
—
Vsv · Approved
IMA
—
1961
Named in
—
Colorless, pink, pale brown, silvery; in transmitted light, colorless
Typical colors
—
Na · Zr · Si · O
Elements
—