Compare Minerals
Put any two minerals side by side — formula, structure, hardness, density and more. Type to search each slot.
Name
—
Fe²⁺Fe³⁺₂(SO₄)₄·14H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Triclinic
Crystal system
—
3–3.5
Mohs hardness
—
2.174
Specific gravity
—
—
Streak
—
Oily, resinous, vitreous
Luster
—
On {010}, perfect; {001}, less perfect
Cleavage
—
P-1
Space group
—
Römerite
Structural group
—
Röm · Grandfathered
IMA
—
1858
Named in
—
Rust-brown, clove-brown, honey-brown, yellow, may be violet-brown; yellow-brown in transmitted light
Typical colors
—
Fe · S · O · H
Elements
—