Heteropolyniobate mineral

Properties

Chemical formula

☐ ₁₂(Fe²⁺₃Fe²⁺)Nb₄(ThNb₉Fe²⁺₃ Ti₄+O₄₂)(H₂O)₉(OH)₃

Group

Oxides

Crystal system

Cubic

Hardness (Mohs)

—

Color

—

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

Im-3

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

—

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Apd

Locality

🇳🇴 Aspedammen

Type locality

—

Discovery year

—

Source: Wikidata