VS
Name
—
Fe³⁺₂Mg₂Si₈O₂₀(OH)₂·8H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2
Mohs hardness
—
2.51
Specific gravity
—
Orange-brown
Streak
—
Dull, silky in aggregates
Luster
—
Two good predicted on {110}
Cleavage
—
C2/m
Space group
—
Palygorskite, Clay
Structural group
—
Wmt · Approved
IMA
—
2019
Named in
—
Orange-brown to yellowish-brown, tips of aggregates tend to be dark reddish brown
Typical colors
—
Fe · Mg · Si · O · H
Elements
—