Compare Minerals

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

Mineral A

Mineral B

Ferrokësterite

Name

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Cu₂FeSnS₄

Formula

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Mineral Species

Entry type

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Sulfides

Chemical class

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Tetragonal

Crystal system

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Mohs hardness

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4.49

Specific gravity

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Black

Streak

—

Metallic. Anisotropism: Weak; in shades of gray. Bireflectance: Weak. R1 –R2: 23.9–26.8 (470), 26.0–27.0 (546)

Luster

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Distinct on {110}; a parting on {001}

Cleavage

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Space group

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Sphalerite, Stannite

Structural group

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Fkës · Approved

IMA

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1985

Named in

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Steel-gray; medium gray in reflected light

Typical colors

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Cu · Fe · Sn · S

Elements

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