Compare Minerals

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

Mineral A

Mineral B

Lammerite

Name

—

Cu₃(AsO₄)₂

Formula

—

Mineral Species

Entry type

—

Arsenates

Chemical class

—

Monoclinic

Crystal system

—

3.5–4

Mohs hardness

—

4.9–5.18

Specific gravity

—

Pale green

Streak

—

Adamantine, vitreous on cleavage surfaces

Luster

—

Perfect on {010}; good on {100}; imperfect on {001}

Cleavage

—

P2_1/a

Space group

—

Structural group

—

Lmr · Approved

IMA

—

1980

Named in

—

Dark green

Typical colors

—

Cu · As · O

Elements

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