Compare Minerals

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

Mineral A

Mineral B

Fontarnauite

Name

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(Na,K)₂(Sr,Ca)(SO₄)[B₅O₈(OH)](H₂O)₂

Formula

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Mineral Species

Entry type

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Borates

Chemical class

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Monoclinic

Crystal system

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2.5–3

Mohs hardness

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2.37

Specific gravity

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White

Streak

—

Pearly

Luster

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Perfect on {010}

Cleavage

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P2_1/c

Space group

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Structural group

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Fon · Approved

IMA

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2009

Named in

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Colorless to light brown

Typical colors

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Na · K · Sr · Ca · S · O · B · H

Elements

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