Compare Minerals

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

Mineral A

Mineral B

Chromo-alumino-povondraite

Name

—

NaCr₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

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Hexagonal

Crystal system

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7.5

Mohs hardness

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3.227

Specific gravity

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Pale green

Streak

—

Vitreous

Luster

—

[Poor/indistinct on {0001}.]

Cleavage

—

R3m

Space group

—

Tourmaline

Structural group

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Capov · Approved

IMA

—

2013

Named in

—

Green

Typical colors

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Na · Cr · Al · Mg · Si · O · B · H

Elements

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