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

—

HgS

Formula

—

Mineral Species

Entry type

—

Sulfides

Chemical class

—

Hexagonal

Crystal system

—

Mohs hardness

—

7.43

Specific gravity

—

Dark black-purple

Streak

—

Adamantine. Anisotropism: Distinct in oil. R1 –R2: n.d

Luster

—

Cleavage

—

Space group

—

Structural group

—

Hcin · Approved

IMA

—

1977

Named in

—

Black with purple cast; in polished section, grayish white

Typical colors

—

Hg · S

Elements

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