Photo: Wikimedia Commons

Transitional structure between phyllosilicate and other silicate unit, mineral

Properties

Chemical formula

Na₄Ca₁₂Al₈Si₁₂O₄₆(SiO₄,PO₄)(OH,H₂O)₄(CO₃,Cl)

Group

Silicates

Crystal system

Tetragonal

Hardness (Mohs)

—

Color

Pink

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

I4/m

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.EH.15

Dana classification

76.3.2.1

IMA status

Grandfathered mineral (G)

IMA symbol

Sco

Locality

🇮🇹 Mount Somma

Type locality

—

Discovery year

—

Source: Wikidata