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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

P

Name

—

U⁴⁺Fe²⁺Nb₂O₈

Formula

—

Mineral Species

Entry type

—

Oxides & Hydroxides

Chemical class

—

Hexagonal

Crystal system

—

5

Mohs hardness

—

7

Specific gravity

—

Brownish black

Streak

—

Metallic

Luster

—

—

Cleavage

—

P-31m

Space group

—

—

Structural group

—

Psk · Approved

IMA

—

1975

Named in

—

Black; white with orange tinge in reflected light, with red-brown internal reflections

Typical colors

—

U · Fe · Nb · O

Elements

—