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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(Ca,Th,Mn)₃Si₄O₁₁F·6H₂O

Formula

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Mineral Species

Entry type

—

Silicates

Chemical class

—

Crystal system

—

Mohs hardness

—

3.02

Specific gravity

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Dark brown

Streak

—

Greasy to vitreous

Luster

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Cleavage

—

Space group

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Structural group

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Tssp · Approved

IMA

—

1962

Named in

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Dark brown, nearly black; reddish brown in transmitted light

Typical colors

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Ca · Th · Mn · Si · O · F · H

Elements

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