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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Ca₂Mn²⁺₃Mn³⁺Fe³⁺Zn₂Si₂O₁₀(OH)₈

Formula

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Mineral Species

Entry type

—

Silicates

Chemical class

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Monoclinic

Crystal system

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Mohs hardness

—

3.66

Specific gravity

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Brown

Streak

—

Vitreous

Luster

—

Perfect on {001}

Cleavage

—

Space group

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Structural group

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Fkf · Approved

IMA

—

1986

Named in

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Dark brown; in thin section, brown to very dark brown

Typical colors

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Ca · Mn · Fe · Zn · Si · O · H

Elements

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