Photo: Wikimedia Commons

Oxide mineral

Properties

Chemical formula

(Fe,Mn)(Ta,Nb)₂O₆

Group

Oxides

Crystal system

Tetragonal

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.DB.10

Dana classification

—

IMA status

Renamed mineral (Rn)

IMA symbol

Tap-Fe

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata