VS
Name
—
Mg₆Al₃(OH)₁₈[Na(H₂O)₆](SO₄)₂·6H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Hexagonal
Crystal system
—
1–1.5
Mohs hardness
—
1.43–1.53
Specific gravity
—
—
Streak
—
Dull
Luster
—
Good on {0001}, perhaps a parting
Cleavage
—
R-3m
Space group
—
Woodwardite
Structural group
—
Mtu · Questionable
IMA
—
1976
Named in
—
Colorless, white, pale yellow, pale yellow-green
Typical colors
—
Mg · Al · O · H · Na · S
Elements
—