VS
Name
—
Al₂Si₂O₅(OH)₄
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2–2.5
Mohs hardness
—
2.6
Specific gravity
—
white
Streak
—
Satiny
Luster
—
Perfect on {001}
Cleavage
—
Cc
Space group
—
Clay, Kaolinite
Structural group
—
Dck · Grandfathered
IMA
—
1930
Named in
—
White, Colorless
Typical colors
—
Al · Si · O · H
Elements
—