kamacite


kamacite
/kam"euh suyt'/, n.
a nickel-iron alloy found in meteorites.
[1885-90; < G (obs.) Kamacit < Gk kamak- (s. of kámax) pole + G -it -ITE1]

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 mineral consisting of iron alloyed with 5–7 percent nickel by weight and found in almost all meteorites which contain nickel-iron metal. It has a body-centred cubic structure and is sometimes referred to as α iron, after one of the three temperature-dependent forms (allotropes) of pure iron, because the kamacite has the same body-centred cubic structure as α iron. In the iron meteorites, it comprises all the metal in hexahedrites; it also is a principal constituent of the octahedrites, where it is intergrown with taenite, a face-centred cubic nickel-iron mineral.

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Universalium. 2010.

Look at other dictionaries:

  • Kamacite — is a mineral. It is an alloy of iron and nickel, usually in the proportions of 90:10 to 95:5 although impurities such as cobalt or carbon may be present. On the surface of Earth, it occurs naturally only in meteorites. It has a metallic lustre,… …   Wikipedia

  • Kamacite — Un morceau de météorite contenant de la kamacite et de la taénite. Le kamacite est un minéral, alliage de fer et le nickel, le plus souvent dans les proportions de 90:10 à 95:5 bien que des impuretés telles que le cobalt ou le carbone puissent y… …   Wikipédia en Français

  • kamacite — ˈkaməˌsīt noun ( s) Etymology: obsolete German kamacit (now kamazit), from Greek kamak , kamax vine pole, shaft + German it ite; akin to Middle High German hamel pole, Sanskrit śamyā stick, staff : a mineral consisting of a nickel i …   Useful english dictionary

  • kamacite — noun A meteoritic mineral which consists chiefly of iron and nickel …   Wiktionary

  • kamacite — (ka ma si t ) s. f. Terme de minéralogie. Combinaison ferrugineuse qui se trouve dans le fer météorique, et qui en fait la charpente. ÉTYMOLOGIE    En grec, charpente …   Dictionnaire de la Langue Française d'Émile Littré

  • kamacite — kam·a·cite …   English syllables

  • kamacite — /ˈkæməsaɪt/ (say kamuhsuyt) noun an iron nickel alloy found in meteorites. {German Kamacit} …   Australian 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

  • 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


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