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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

M

Name

—

K₃Cu₇Fe³⁺O₄(AsO₄)₄

Formula

—

Mineral Species

Entry type

—

Arsenates

Chemical class

—

Monoclinic

Crystal system

—

4

Mohs hardness

—

4.386

Specific gravity

—

Dark green with an olive hue

Streak

—

Vitreous

Luster

—

None

Cleavage

—

C2/c

Space group

—

—

Structural group

—

Mea · Approved

IMA

—

2014

Named in

—

Black, dark gray in reflected light

Typical colors

—

K · Cu · Fe · O · As

Elements

—