VS
Name
—
Na₂(Si₃Al₂)O₁₀·2H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
5–5.5
Mohs hardness
—
2.2–2.26
Specific gravity
—
white
Streak
—
Vitreous to pearly
Luster
—
{110}, perfect; parting on {010}
Cleavage
—
Fdd2
Space group
—
Natrolite
Structural group
—
Ntr · Approved
IMA
—
1803
Named in
—
White, Colorless, Yellow, Pink
Typical colors
—
Na · Si · Al · O · H
Elements
—