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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KCa₂(Si₇Al)O₁₇(OH)₂·6H₂O

Formula

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Mineral Species

Entry type

—

Silicates

Chemical class

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Orthorhombic

Crystal system

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Mohs hardness

—

2.168

Specific gravity

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Streak

—

Vitreous

Luster

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{010}, very perfect; {100} and {001}, imperfect

Cleavage

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Pnm2_1

Space group

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Structural group

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Hdhy · Approved

IMA

—

1979

Named in

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Grayish white

Typical colors

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K · Ca · Si · Al · O · H

Elements

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