VS
Name
—
Ca₄Al₄(SO₄)F₂(OH)₁₆·2H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Tetragonal
Crystal system
—
3
Mohs hardness
—
2.573
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
None
Cleavage
—
P4/nnc
Space group
—
—
Structural group
—
Kje · Approved
IMA
—
2018
Named in
—
Pale greenish yellow to colorless
Typical colors
—
Ca · Al · S · O · F · H
Elements
—