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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(Fe,Pb)₃(Ge,Fe)₁₋ₓS₄

Formula

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Mineral Species

Entry type

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Sulfides

Chemical class

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Crystal system

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Mohs hardness

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Specific gravity

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Dark gray. Anisotropism: Distinct. R1-R2: (470) 43.5-44.5

Streak

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Luster

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Cleavage

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Space group

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Sphalerite, Germanite

Structural group

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Pk · Approved

IMA

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1974

Named in

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Brownish gray; in reflected light, white with cream-red tint

Typical colors

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Fe · Pb · Ge · S

Elements

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