VS
Name
—
Ca₀.₃(Cr,Mg)₂(Si,Al)₄O₁₀(OH)₂·4H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
—
Crystal system
—
1–2
Mohs hardness
—
2.11–2.36
Specific gravity
—
—
Streak
—
Dull
Luster
—
—
Cleavage
—
—
Space group
—
Clay, Smectite-vermiculite
Structural group
—
Vkn · Approved
IMA
—
1831
Named in
—
Bright to dark green, emerald-green; in transmitted light, emerald-green
Typical colors
—
Ca · Cr · Mg · Si · Al · O · H
Elements
—