VS
Name
—
NaCa₂Si₃O₈(OH)
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Triclinic
Crystal system
—
4.5–5
Mohs hardness
—
2.84–2.9
Specific gravity
—
white
Streak
—
Silky, subvitreous
Luster
—
Perfect on {100} and {001}
Cleavage
—
P-1
Space group
—
Pectolite
Structural group
—
Pct · Grandfathered
IMA
—
1828
Named in
—
White, Colorless, Gray
Typical colors
—
Na · Ca · Si · O · H
Elements
—