Photo: John Sobolewski · CC BY 3.0

Uncommon sulfide-hydroxide mineral of iron and copper

Properties

Chemical formula

2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)₂]

Group

Sulfides

Crystal system

Trigonal

Hardness (Mohs)

—

Color

Brown

Luster

—

Streak

Black

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

2.FD.30

Dana classification

2.14.1.1

IMA status

Grandfathered mineral (G)

IMA symbol

Val

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata