Photo: Joan Rosell · CC BY-SA 4.0

Phosphate-sulfate mineral

Properties

Chemical formula

Fe³⁺₂(PO₄)(SO₄)(OH)·6H₂O

Group

Sulfates

Crystal system

Triclinic

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

8.DB.05

Dana classification

—

IMA status

Redefined mineral (Rd)

IMA symbol

Dtz

Locality

🇺🇸 Alum Cave Bluff

Type locality

—

Discovery year

—

Source: Wikidata