Sulfate mineral

Properties

Chemical formula

Mg₇Al₂(OH)₁₈[Ca(H₂O)₆][SO₄]₂ * ₆H₂O

Group

Sulfates

Crystal system

Trigonal

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

P-3c1

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

7.DD.35

Dana classification

31.3.2.1

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Wld

Locality

🇸🇪 Långban

Type locality

—

Discovery year

—

Source: Wikidata