Photo: David Hospital · CC BY 4.0

Phyllosilicate mineral

Properties

Chemical formula

Pb₁₈Fe³⁺₄[Si₄(Si,Fe³⁺)₆][Pb₄Si₁₆(Si,Fe)₄]O₈₂Cl₆

Group

Silicates

Crystal system

Hexagonal

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

9.EG.50

Dana classification

—

IMA status

Grandfathered mineral (G)

IMA symbol

Jg

Locality

🇸🇪 Långban

Type locality

—

Discovery year

—

Source: Wikidata