Photo: Robert M. Lavinsky · CC BY-SA 3.0

Borate mineral

Properties

Chemical formula

(Nb,Ta)(BO₄)

Group

Oxides

Crystal system

Tetragonal

Hardness (Mohs)

—

Color

Colorless

Luster

—

Streak

White

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

I4₁/amd

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

6.AC.15

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Shv

Locality

—

Type locality

—

Discovery year

—

Source: Wikidata