Compare Minerals

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

Mineral A

Mineral B

Koenenite

Name

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Na₄Mg₉Al₄Cl₁₂(OH)₂₂

Formula

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Mineral Species

Entry type

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Halides

Chemical class

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Hexagonal

Crystal system

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1.5–2

Mohs hardness

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1.82–2.08

Specific gravity

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Streak

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Pearly on cleavage surfaces

Luster

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{0001}, perfect

Cleavage

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R-3m

Space group

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Structural group

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Koe · Grandfathered

IMA

—

1902

Named in

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Colorless, pale yellow to deep red due to inclusions; reddish brown to colorless in thin section

Typical colors

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Na · Mg · Al · Cl · O · H

Elements

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