Compare Minerals

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

Mineral A

Mineral B

Wilhelmramsayite

Name

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Cu₃FeS₃·2H₂O

Formula

—

Mineral Species

Entry type

—

Oxides & Hydroxides

Chemical class

—

Orthorhombic

Crystal system

—

2.5

Mohs hardness

—

2.75

Specific gravity

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Black

Streak

—

Metallic

Luster

—

Perfect on {001}

Cleavage

—

Pmmm

Space group

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Structural group

—

Wrm · Approved

IMA

—

2004

Named in

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Dark lead-gray on fresh surfaces, rapidly turns iron-black in moist air; bluish gray in reflected light

Typical colors

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Cu · Fe · S · H · O

Elements

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