Oxide mineral

Properties

Chemical formula

Na₂(Ta,Nb)₄O₁₁

Group

Oxides

Crystal system

Hexagonal

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

4.DJ.05

Dana classification

8.6.2.3

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Irt

Locality

🇰🇿 Kalba range

Type locality

—

Discovery year

—

Source: Wikidata