Photo: Wikimedia Commons · CC BY 2.0

Sulfate mineral

Properties

Chemical formula

Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O

Group

Sulfates

Crystal system

Triclinic

Hardness (Mohs)

—

Color

Yellow

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

7.DB.35

Dana classification

31.10.5.1

IMA status

Grandfathered mineral (G)

IMA symbol

Cpi

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata