VS
Name
—
Mg₇Fe³⁺₄(OH)₂₆·H₂O
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
—
Crystal system
—
3
Mohs hardness
—
3.1–3.2
Specific gravity
—
Pale orange-brown
Streak
—
Vitreous
Luster
—
Perfect on {0001}, micaceous
Cleavage
—
—
Space group
—
Hydrotalcite
Structural group
—
Mkx · Questionable
IMA
—
1967
Named in
—
Dark reddish brown; amber-orange to deep red in transmitted light
Typical colors
—
Mg · Fe · O · H
Elements
—