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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[Fe,AsO₄,SO₄,H₂O]

Formula

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Mineral Species

Entry type

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Arsenates

Chemical class

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Amorphous

Crystal system

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2–3

Mohs hardness

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2.2–2.5

Specific gravity

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Yellow to white

Streak

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Waxy, vitreous, greasy, may be dull, earthy

Luster

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Cleavage

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Space group

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Structural group

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Ptc · Questionable

IMA

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1813

Named in

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Reddish brown, yellowish brown, brownish red to brownish black; yellow, gray to nearly white

Typical colors

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Fe · As · O · S · H

Elements

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