VS
Name
—
Fe²⁺₆Al₃(OH)₁₈[Na(H₂O)₆](SO₄)₂·6H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Hexagonal
Crystal system
—
2
Mohs hardness
—
2.33
Specific gravity
—
Pale grayish green
Streak
—
Dull to greasy
Luster
—
Perfect on {00*1}
Cleavage
—
R-3
Space group
—
Woodwardite, Hydrotalcite
Structural group
—
Nik · Approved
IMA
—
2001
Named in
—
Green to grayish white; colorless to grayish white in transmitted light
Typical colors
—
Fe · Al · O · H · Na · S
Elements
—