Compare Minerals

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

Mineral A

Mineral B

Name

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Cu₅As₂

Formula

—

Mineral Species

Entry type

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Sulfides

Chemical class

—

Orthorhombic

Crystal system

—

Mohs hardness

—

8.48

Specific gravity

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Black

Streak

—

Metallic. Anisotropism: Strong. R1 –R2: (400) —, (420) —, (440) 45.9–46.4, (460) 44.6–43.4, (480) 43.0–41.4

Luster

—

Cleavage

—

Ibam

Space group

—

Structural group

—

Kou · Grandfathered

IMA

—

1958

Named in

—

In polished section, bluish gray

Typical colors

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Cu · As

Elements

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