VS
Name
—
Na₂Ti₂O₃(Si₂O₆)
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
6
Mohs hardness
—
3.42–3.45
Specific gravity
—
—
Streak
—
Vitreous, adamantine to submetallic, or silky, dull
Luster
—
Distinct on {010}
Cleavage
—
Pbcn
Space group
—
—
Structural group
—
Lrz · Grandfathered
IMA
—
1901
Named in
—
Pale purple-brown, pale pink to mauve, brown to black
Typical colors
—
Na · Ti · O · Si
Elements
—