VS
Name
—
Ca₀.₃(Fe²⁺,Mg,Fe³⁺)₃(Si,Al)₄O₁₀(OH)₂·4H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2
Mohs hardness
—
2.49
Specific gravity
—
Green
Streak
—
Vitreous
Luster
—
Perfect on {001}
Cleavage
—
—
Space group
—
Clay, Smectite-vermiculite
Structural group
—
Fsap · Approved
IMA
—
2002
Named in
—
Dark green, brownish on oxidation
Typical colors
—
Ca · Fe · Mg · Si · Al · O · H
Elements
—