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Compare Minerals

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

Mineral A

VS

Mineral B

Rilandite

Name

—

Cr₆SiO₁₁·5H₂O

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

—

—

Crystal system

—

2–3

Mohs hardness

—

—

Specific gravity

—

Grayish brown

Streak

—

Brilliant on fresh surface, otherwise dull, pitchy

Luster

—

—

Cleavage

—

—

Space group

—

—

Structural group

—

Ril · Questionable

IMA

—

1933

Named in

—

Dark brownish black

Typical colors

—

Cr · Si · O · H

Elements

—