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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

Rankinite

Name

—

Ca₃Si₂O₇

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

—

Monoclinic

Crystal system

—

5.5

Mohs hardness

—

2.96–3

Specific gravity

—

—

Streak

—

Vitreous

Luster

—

—

Cleavage

—

P2_1/a

Space group

—

—

Structural group

—

Rnk · Grandfathered

IMA

—

1942

Named in

—

Colorless

Typical colors

—

Ca · Si · O

Elements

—