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

Tetrathenite is a native alloy of iron and nickel. Along with kamacite, tenite and antitenite, it is one of the four constituent minerals of iron meteorites, also present in siderolites and chondrites. They are also very rare in terrestrial rocks.

Properties

Chemical formula

FeNi

Group

Oxides

Crystal system

Monoclinic

Hardness (Mohs)

—

Color

White

Luster

—

Streak

—

Density

—

Cleavage

—

Fracture

—

Tenacity

—

Crystal habit

—

Transparency

—

Space group

Pm

Fluorescence

—

Magnetism

—

Radioactivity

—

Refractive index

—

Optical character

—

Birefringence

—

Pleochroism

—

Strunz classification

1.AE.10

Dana classification

—

IMA status

Approved mineral and/or valid name (A)

IMA symbol

Ttae

Locality

🇺🇸 Estherville

Type locality

—

Discovery year

—

Source: Wikidata