Compare Minerals

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

Mineral A

Mineral B

Polyakovite-(Ce)

Name

—

(Ce,Ca)₄MgCr₂(Ti,Nb)₂Si₄O₂₂

Formula

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Mineral Species

Entry type

—

Silicates

Chemical class

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Monoclinic

Crystal system

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5.5–6

Mohs hardness

—

4.75

Specific gravity

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Light brown

Streak

—

Vitreous

Luster

—

None

Cleavage

—

C2/m

Space group

—

Chevkinite

Structural group

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Pak-Ce · Approved

IMA

—

1998

Named in

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Black, gray in reflected light

Typical colors

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Ce · Ca · Mg · Cr · Ti · Nb · Si · O

Elements

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