VS
Name
—
Na₂BeSi₂O₆
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
6
Mohs hardness
—
2.662
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
Fair in one direction; indistinct in two other directions
Cleavage
—
Fddd
Space group
—
Cristobalite
Structural group
—
Ckl · Grandfathered
IMA
—
1938
Named in
—
White; colorless in thin section
Typical colors
—
Na · Be · Si · O
Elements
—