Compare Minerals

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

Mineral A

Mineral B

Gaildunningite

Name

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Hg²⁺₃[NHg²⁺₂]₁₈(Cl,I)₂₄

Formula

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Mineral Species

Entry type

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Halides

Chemical class

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Orthorhombic

Crystal system

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Mohs hardness

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8.22

Specific gravity

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Orange

Streak

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Vitreous to adamantine

Luster

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Very good on {100} and {010}, good on {001}

Cleavage

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Amam

Space group

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Structural group

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Gai · Approved

IMA

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2018

Named in

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Yellow to orange to darker orange-red, gray in reflected light with strong yellow-orange internal reflections

Typical colors

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Hg · N · Cl · I

Elements

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