Compare Minerals

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

Mineral A

Mineral B

Troilite

Name

—

FeS

Formula

—

Mineral Species

Entry type

—

Sulfides

Chemical class

—

Hexagonal

Crystal system

—

3.5–4.5

Mohs hardness

—

4.67–4.79

Specific gravity

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Dark grayish brown

Streak

—

Metallic. Anisotropism: Strong. R1 –R2: (400) 24.3–28.4, (420) 24.9–29.6, (440) 25.8–30.9, (460) 27.1–32.6

Luster

—

Cleavage

—

P6_3/mmc

Space group

—

Structural group

—

Tro · Grandfathered

IMA

—

1863

Named in

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Pale grayish brown, tarnishes rapidly on exposure

Typical colors

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Fe · S

Elements

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