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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PbBi₄Te₇

Formula

—

Mineral Species

Entry type

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Sulfosalts

Chemical class

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Hexagonal

Crystal system

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3.5–4

Mohs hardness

—

Specific gravity

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Streak

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Metallic. R: (400) —, (420) 59.0, (440) 61.4, (460) 63.8, (480) 66.8, (500) 69.4, (520) 71.2, (540) 72.1, (560) 72.8

Luster

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Cleavage

—

P-3m1

Space group

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Tetradymite

Structural group

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Koc · Approved

IMA

—

1988

Named in

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Tin-white on fresh fracture, quickly altering in moist air to brownish black; creamy white in reflected light

Typical colors

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Pb · Bi · Te

Elements

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