Compare Minerals

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

Mineral A

Mineral B

Dukeite

Name

—

Bi³⁺₂₄Cr⁶⁺₈O₅₇(OH)₆·3H₂O

Formula

—

Mineral Species

Entry type

—

Oxides & Hydroxides

Chemical class

—

Hexagonal

Crystal system

—

3–4

Mohs hardness

—

7.179

Specific gravity

—

Bright yellow

Streak

—

Resinous

Luster

—

None

Cleavage

—

P31c

Space group

—

Structural group

—

Duk · Approved

IMA

—

1999

Named in

—

Yellow to dirty yellow-brown; gray to purplish gray with strong yellow internal reflections in reflected light

Typical colors

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Bi · Cr · O · H

Elements

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