Photo: Christian Rewitzer · CC BY-SA 3.0

Alunite supergroup, sulfate mineral

Properties

Chemical formula

KFe³⁺₃(SO₄)₂(OH)₆

Group

Sulfates

Crystal system

Hexagonal

Hardness (Mohs)

—

Color

Orange

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

7.BC.10

Dana classification

—

IMA status

Redefined mineral (Rd)

IMA symbol

Jrs

Locality

🇪🇸 Jaroso Ravine

Type locality

—

Discovery year

—

Source: Wikidata