Photo: Pedro Alves · CC BY 3.0

Sapphirine supergroup, single chain inosilicate mineral

Properties

Chemical formula

Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆]

Group

Silicates

Crystal system

Triclinic

Hardness (Mohs)

—

Color

Black

Luster

—

Streak

Brown

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

9.DH.45

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Aen

Locality

🇬🇱 Naujakasik

Type locality

—

Discovery year

—

Source: Wikidata