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Compare Minerals

Put any two minerals side by side — formula, structure, hardness, density and more. Type to search each slot.

Mineral A

VS

Mineral B

Groutite

Name

—

Mn³⁺O(OH)

Formula

—

Mineral Species

Entry type

—

Oxides & Hydroxides

Chemical class

—

Orthorhombic

Crystal system

—

3.5–4

Mohs hardness

—

4.144

Specific gravity

—

Dark brown

Streak

—

Brilliant submetallic to adamantine

Luster

—

{010}, perfect; {100}, less perfect

Cleavage

—

Pbnm

Space group

—

Diaspore

Structural group

—

Gro · Grandfathered

IMA

—

1945

Named in

—

Jet-black

Typical colors

—

Mn · O · H

Elements

—