VS
Name
—
Na₄Be₂Sn(Si₃O₉)₂·2H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–5.5
Mohs hardness
—
2.9
Specific gravity
—
—
Streak
—
Silky
Luster
—
{101} and {100}, distinct, (101) ^ (100) = 63 ±
Cleavage
—
Cc
Space group
—
—
Structural group
—
Sør · Approved
IMA
—
1965
Named in
—
Colorless to pale pink, altering to milky white; in transmitted light, colorless
Typical colors
—
Na · Be · Sn · Si · O · H
Elements
—