Compare Minerals

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

Mineral A

Mineral B

Lehmannite

Name

—

Na₁₈Cu₁₂TiO₈(AsO₄)₈FCl₅

Formula

—

Mineral Species

Entry type

—

Arsenates

Chemical class

—

Monoclinic

Crystal system

—

4.5

Mohs hardness

—

3.676

Specific gravity

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Grayish green with olive hue

Streak

—

Strong vitreous

Luster

—

None

Cleavage

—

C2/m

Space group

—

Arsmirandite

Structural group

—

Leh · Approved

IMA

—

2018

Named in

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Dark grayish green to olive-greenish black, dark gray in reflected light

Typical colors

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Na · Cu · Ti · O · As · F · Cl

Elements

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