VS
Name
—
Na₂Be₂Si₆O₁₅·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
5.5
Mohs hardness
—
2.55–2.61
Specific gravity
—
—
Streak
—
Pearly on cleavages, vitreous on fractures
Luster
—
Perfect on {001}, distinct on {100}
Cleavage
—
Pnam
Space group
—
—
Structural group
—
Edd · Grandfathered
IMA
—
1893
Named in
—
Colorless, white, also tinted violet, blue, or yellow when finely crystalline
Typical colors
—
Na · Be · Si · O · H
Elements
—