VS
Name
—
Na₂Si₂O₅
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
—
Mohs hardness
—
2.48
Specific gravity
—
—
Streak
—
Pearly
Luster
—
{100}, perfect micaceous; {001}, distinct; {011}, poor
Cleavage
—
P2_1/a
Space group
—
—
Structural group
—
Ns · Approved
IMA
—
1974
Named in
—
Colorless; anomalous blue interference colors in thin section
Typical colors
—
Na · Si · O
Elements
—