VS
Name
—
FeO(OH)
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Orthorhombic
Crystal system
—
5–5.5
Mohs hardness
—
4.28
Specific gravity
—
Brownish yellow, yellow-orange, ocher-yellow
Streak
—
Imperfect adamantine metallic to dull earthy; silky when fibrous
Luster
—
{010}, perfect; {100}, less perfect
Cleavage
—
Pbnm
Space group
—
Diaspore
Structural group
—
Gth · Approved
IMA
—
1806
Named in
—
Brown, Yellow, Black, Red
Typical colors
—
Fe · O · H
Elements
—