stony-iron meteorite


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stony-iron meteorite

Any of a relatively small group of meteorites containing on average 50% nickel-iron and 50% stony (mainly silicate) material. Stony irons can be subdivided into pallasites, which are composed of abundant grains of olivine (a magnesium silicate mineral) enclosed in metal, and mesosiderites, which are agglomerates of metal and silicates. See also S-type asteroids.

stony-iron meteorite

[′stō·nē ¦ī·ərn ′mēd·ē·ə‚rīt]
(geology)
Any of the rare meteorites containing at least 25% of both nickel-iron and heavy basic silicates. Also known as iron-stony meteorite; lithosiderite; sideraerolite; siderolite; syssiderite.
References in periodicals archive ?
Then in 1863 the work of the German mineralogist Gustav Rose established the class of stony-iron meteorites called pallasites, the subclasses of which have varying amounts of iron, nickel, and olivine.
Stony-iron meteorites are a 50-50 mix of metals, minerals and silicate material.
Astronomers classify both Ida and Gaspra as S asteroids, indicating that each has a composition similar to that of stony or stony-iron meteorites.