Photo: Fernando Brederodes · Public domain

Borate mineral

Properties

Chemical formula

(Mg,Ti,Fe,Cr,Al)₂O(BO₃)

Group

Oxides

Crystal system

Orthorhombic

Hardness (Mohs)

—

Color

Brown

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

62

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

6.AB.20

Dana classification

24.2.2.1

IMA status

Grandfathered mineral (G)

IMA symbol

Wwk

Locality

🇺🇸 Warwick

Type locality

—

Discovery year

—

Source: Wikidata