VS
Name
—
Na₄Ti₄(Si₂O₆)₂[(Si,Al)₄O₁₀]O₄·(H₂O,Na,K)₃
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
4
Mohs hardness
—
2.85–2.97
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
{010}, perfect
Cleavage
—
C2/c
Space group
—
—
Structural group
—
Vgd · Grandfathered
IMA
—
1956
Named in
—
Colorless, white, mauve, pink; in transmitted light, colorless to brownish
Typical colors
—
Na · Ti · Si · O · Al · H · K
Elements
—