VS
Name
—
Ca₀.₂(Li,Al,Mg,Fe)₃(Si,Al)₄O₁₀(OH,F)₂·nH₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
—
Crystal system
—
1
Mohs hardness
—
—
Specific gravity
—
White
Streak
—
Glistening when hydrated; dull when partially dehydrated
Luster
—
—
Cleavage
—
—
Space group
—
Clay, Smectite-vermiculite
Structural group
—
Sfd · Approved
IMA
—
1973
Named in
—
Greenish yellow to light olive when hydrated; light greenish gray to grayish olive after dehydration
Typical colors
—
Ca · Li · Al · Mg · Fe · Si · O · H · F
Elements
—