Compare Minerals

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

Mineral A

Mineral B

Johninnesite

Name

—

Na₂Mn²⁺₉Mg₇(AsO₄)₂(Si₆O₁₇)₂(OH)₈

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

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Triclinic

Crystal system

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Mohs hardness

—

3.48

Specific gravity

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Light brownish yellow

Streak

—

Vitreous

Luster

—

Good on {100}, poor on {010}

Cleavage

—

P-1

Space group

—

Structural group

—

Jin · Approved

IMA

—

1985

Named in

—

Light yellowish brown; colorless in transmitted light

Typical colors

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Na · Mn · Mg · As · O · Si · H

Elements

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