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Oxide mineral

Properties

Chemical formula

K(Mn⁴⁺₇Mn³⁺)O₁₆

Group

Oxides

Crystal system

Monoclinic

Hardness (Mohs)

—

Color

Metallic

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

4.DK.05

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Cml

Locality

🇺🇸 Tombstone

Type locality

—

Discovery year

—

Source: Wikidata