Taenite

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%. It is opaque with a metallic grayish to white color. The structure is isometric-hexoctahedral. Its density is around 8 g/cm³ and hardness is 5 to 5.5 on the Mohs scale. Taenite is magnetic.

The name is derived from the Greek for "band". 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.

ee also

list of minerals

References

* [http://webmineral.com/data/Taenite.shtml Webmineral.com]
* [http://www.meteorite.fr/en/classification/ironmain.htm#strucclass www.meteorite.fr]


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • taenite — ▪ mineral       nickel iron mineral having a face centred cubic structure and playing a major role in the crystallization and structure of iron meteorites and stony iron meteorites. It is sometimes referred to as γ iron, after one of the three… …   Universalium

  • taenite — noun A mineral, found in certain meteorites, that is a magnetic alloy of iron and nickel …   Wiktionary

  • taenite — tae·nite …   English syllables

  • taenite — ˈtēˌnīt noun ( s) Etymology: German tänit, from tän taen + it ite : a mineral consisting of a nickel iron alloy that forms with kamacite the mass of most meteoric iron …   Useful english dictionary

  • Nickel — This article is about the chemical element. For other uses, see Nickel (disambiguation). cobalt ← nickel → copper ↑ Ni ↓ Pd …   Wikipedia

  • Widmanstätten pattern — Widmanstätten patterns, called also Thomson structures, are unique figures of long nickel iron crystals, found in the octahedrite iron meteorites and some pallasites. They consist of a fine interleaving of kamacite and taenite bands or ribbons… …   Wikipedia

  • Antitaenite — is a meteoritic metal alloy mineral composed of iron and nickel, 20 40% Ni (and traces of other elements) that has a face centered cubic crystal structure. Its existence as a new mineral species occurring in both iron meteorites and in chondrites …   Wikipedia

  • Taenit — Widmannstättensche Figur schmale, helle Streifen sind Taenit Bänder Chemische Formel γ (Fe,Ni) Mineralklasse Elemente Metalle, Legierungen und intermetallische Verbindungen I/ …   Deutsch Wikipedia

  • meteorite — meteoritic /mee tee euh rit ik/, meteoritical, meteorital /mee tee euh ruyt l/, adj. /mee tee euh ruyt /, n. 1. a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid. 2. a meteoroid. [1815 25; METEOR + ITE1] * * …   Universalium

  • iron meteorite —  any meteorite consisting mainly of iron, usually combined with small amounts of nickel. When such meteorites, often called irons, fall through the atmosphere, they may develop a thin, black crust of iron oxide that quickly weathers to rust.… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”