stony iron meteorite

      any meteorite containing substantial amounts of both rocky material (silicates) and nickel-iron metal. Such meteorites, which are often called stony irons, are an intermediate type between the two more common types, stony meteorites and iron meteorites. In specimens of one common type of stony iron, known as pallasites (formerly called lithosiderites), the nickel-iron is a coherent mass enclosing separated stony parts. The material that makes up pallasites probably formed, after melting and differentiation of their parent asteroids, at the interface between the nickel-iron metal core and the surrounding silicate mantle. The other common type, the mesosiderites (formerly called siderolites), are impact breccias. They are probably related to the basaltic achondrite group of stony meteorites, but they contain an unusually large quantity of interspersed metal. The source of the metal is not known for certain, but it may be from the core of the body that collided with and brecciated the mesosiderite parent body.

* * *


Universalium. 2010.

Look at other dictionaries:

  • stony-iron meteorite — stonˈy iron meteorite noun One containing both metal and stony material • • • Main Entry: ↑stone …   Useful english dictionary

  • Iron meteorite — Tamentit Iron Meteorite, found in 1864 in the Sahara Desert,[1] weight about 500 kg. On display at Vulcania park in France …   Wikipedia

  • 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

  • IIE iron meteorite — The iron meteorites of the IIE chemical type are octahedrites of various coarseness, most of which contain numerous inclusions of recrystallized stony silicates. They have very mineral compositions and oxygen isotope ratios very similar to the H… …   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

  • Meteorite fall statistics — are frequently used by planetary scientists to approximate the true flux of meteorites on the Earth. Meteorite falls are those meteorites that are collected after being witnessed to fall, whereas meteorite finds are discovered at a later time.… …   Wikipedia

  • Meteorite — This article is about debris from space that survives impact with the ground. For other uses of Meteor and Meteors , see Meteor (disambiguation). For popular applications, see Falling star. For the fictional superhero in the Marvel Comics… …   Wikipedia

  • Meteorite classification — The ultimate goal of meteorite classification is to group all meteorite specimens that share a common origin on a single, identifiable parent body. This could be a planet, asteroid, Moon, or other current Solar System object, or one that existed… …   Wikipedia

  • Meteorite hunter — Desert prospecting Antarctic prospe …   Wikipedia

  • Météorite de Chassenon — Astroblème de Rochechouart Chassenon Astroblème de Rochechouart Chassenon Image de synthèse du cratère quelques années après l’impact. Localisation Astre …   Wikipédia en Français

Share the article and excerpts

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

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.