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

Carbonate-sulfate mineral

Properties

Chemical formula

SrCa₄Cr³⁺₈(CO₃)₈SO₄(OH)₁₆·25H₂O

Group

Carbonates

Crystal system

Orthorhombic

Hardness (Mohs)

—

Color

Purple

Luster

—

Streak

Pink

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

Pnma

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

—

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Pni

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata