Taenite
A variety of Minerals

What is Taenite?
Taenite (Fe,Ni) is a mineral found naturally on Earth mostly in iron meteorites. It is an alloy of iron and nickel, with nickel proportions of 20% up to 65%. The name is derived from the Greek ταινία for "band, ribbon". Taenite is a major constituent of iron meteorites. In octahedrites it is found in bands interleaving with kamacite forming Widmanstätten patterns, whereas in ataxites it is the dominant constituent. In octahedrites a fine intermixture with kamacite can occur, which is called plessite. Taenite is one of four known Fe-Ni meteorite minerals: The others are kamacite, tetrataenite, and antitaenite.
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Key Characteristics
Characteristics of Taenite
It is opaque with a metallic grayish to white color. The structure is isometric-hexoctahedral. Its density is around 8 g/cm and hardness is 5 to 5.5 on the Mohs scale. Taenite is magnetic, in contrast to antitaenite. The crystal lattice has the c≈a= 3.582±0.002 Å. The Strunz classification is I/A.08-20, while the Dana classification is 1.1.11.2 . It is hexoctahedral (cubic) in structure.
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Quick Facts
Physical Properties
- Color
- Greyish white, silver-white
- Hardness (Mohs)
- 5 - 5.5
- Streak
- Light grey
Chemical Properties
- Chemical Formula
- (Fe,Ni)
- Elements
- Fe, Ni
Also Known As

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