Photo: Robert M. Lavinsky · CC BY-SA 3.0

Nesosilicate mineral

Properties

Chemical formula

Mg₇(SiO₄)₃(F,OH)₂

Group

Silicates

Crystal system

Orthorhombic

Hardness (Mohs)

6

Color

White

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.AF.50

Dana classification

—

IMA status

Grandfathered mineral (G)

IMA symbol

Hu

Locality

🇮🇹 Mount Somma

Type locality

—

Discovery year

—

Source: Wikidata