VS
Name
—
Na₆(Al₆Si₁₀O₃₂)·8.5H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
4
Mohs hardness
—
2.19
Specific gravity
—
White
Streak
—
Vitreous; frosted aggregates
Luster
—
Good parting on {011}
Cleavage
—
I2
Space group
—
Gismondine
Structural group
—
Grn-Na · Approved
IMA
—
2015
Named in
—
Pale yellow to white (aggregates)
Typical colors
—
Na · Al · Si · O · H
Elements
—