Triple layer phyllosilicate mineral

Properties

Chemical formula

K₇Na₂Ca₂[Al₃Si₁₀O₂₉]F₂Cl₂

Group

Silicates

Crystal system

Orthorhombic

Hardness (Mohs)

—

Color

—

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

59

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

—

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Ubn

Locality

🇮🇹 Vispi quarry, Pian di Celle volcano

Type locality

—

Discovery year

—

Source: Wikidata