Oxide mineral

Properties

Chemical formula

(Ti,Ca,Zr)O₂₋ₓ

Group

Oxides

Crystal system

Cubic

Hardness (Mohs)

—

Color

Black

Luster

—

Streak

Taupe

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

—

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

4.DL.05

Dana classification

8.2.5.1

IMA status

Redefined mineral (Rd)

IMA symbol

Zke

Locality

🇧🇷 Jacupiranga mine

Type locality

—

Discovery year

—

Source: Wikidata