Photo: Henk Smeets – tomeikminerals.com · CC BY 4.0

Sulfate mineral

Properties

Chemical formula

Ca₆Si₂[(SO₄)₂(SO₃)₂(OH)₁₂]·22H₂O

Group

Sulfates

Crystal system

Hexagonal

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

P6₃

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

—

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Hsc

Locality

🇩🇪 Graulay

Type locality

—

Discovery year

—

Source: Wikidata