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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(Cu,Pt,Pb,Fe,Ni)₉S₈

Formula

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Mineral Species

Entry type

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Sulfides

Chemical class

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Orthorhombic

Crystal system

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Mohs hardness

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7.78

Specific gravity

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Streak

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n.d. Anisotropism: Distinct, from pink-lilac to bluish. Bireflectance: Weak. R1 –R2: (400) —, (420) —, (440) 37.1–39.6

Luster

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Cleavage

—

Pmmm

Space group

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Pentlandite

Structural group

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Klh · Approved

IMA

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1983

Named in

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In reflected light, grayish with a brownish lilac tint

Typical colors

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Cu · Pt · Pb · Fe · Ni · S

Elements

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