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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(H₅O₂)Fe³⁺(SO₄)₂·2H₂O

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

—

2.23

Specific gravity

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Streak

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Subvitreous to pearly

Luster

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Perfect on {001}, good on {110}

Cleavage

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Pnma

Space group

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Structural group

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Rbc · Grandfathered

IMA

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1891

Named in

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White, gray, pale yellow, may be pale green or pale blue if impure; colorless in transmitted light

Typical colors

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H · O · Fe · S

Elements

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