VS
Name
—
NaFe³⁺₃(SO₄)₂(OH)₆
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Hexagonal
Crystal system
—
3
Mohs hardness
—
3.11–3.18
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
Perfect on {0001}
Cleavage
—
R-3m
Space group
—
Alunite-Alunite
Structural group
—
Njrs · Approved
IMA
—
1902
Named in
—
Bright yellow, golden brown, cinnamon-brown
Typical colors
—
Na · Fe · S · O · H
Elements
—