VS
Name
—
Fe³⁺Si₂O₅(OH)
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
1.5–2
Mohs hardness
—
2.97–3.01
Specific gravity
—
—
Streak
—
—
Luster
—
—
Cleavage
—
—
Space group
—
Clay, Pyrophyllite
Structural group
—
Fprl · Approved
IMA
—
1978
Named in
—
Brownish yellow
Typical colors
—
Fe · Si · O · H
Elements
—