Photo: Wikimedia Commons · Public domain

Nesosilicate mineral

Properties

Chemical formula

Al₂OSiO₄

Group

Silicates

Crystal system

Triclinic

Hardness (Mohs)

4,5–7,5

Color

Blue

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.15

Dana classification

52.2.2c.1

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Ky

Locality

🇦🇹 Austria

Type locality

—

Discovery year

—

Source: Wikidata