Compare Minerals

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

Mineral A

Mineral B

Acmonidesite

Name

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(NH₄,K,Pb,Na)₉Fe²⁺₄(SO₄)₅Cl₈

Formula

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Mineral Species

Entry type

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Sulfates

Chemical class

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Orthorhombic

Crystal system

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Mohs hardness

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2.56

Specific gravity

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Light brown

Streak

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Vitreous

Luster

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None

Cleavage

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C222_1

Space group

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Structural group

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Acm · Approved

IMA

—

2013

Named in

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Brown; intense brown in transmitted light

Typical colors

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N · H · K · Pb · Na · Fe · S · O · Cl

Elements

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