Photo: Edoardo Mazzola · CC0

Oxide mineral

Properties

Chemical formula

(Ca,Ce,Na)(Nb,Ta,Ti)₂(O,OH,F)₆

Group

Oxides

Crystal system

—

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.DG.05

Dana classification

—

IMA status

Redefined mineral (Rd)

IMA symbol

Fsm

Locality

🇷🇺 Vishnevye mountains

Type locality

—

Discovery year

—

Source: Wikidata