Astronomy: General

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chondrule

A Dictionary of Astronomy | 1997 | Copyright

chondrule A small spheroidal object, typically about 0.2–3.8 mm in size, although 0.5–1.5 mm is more usual, found in all chondritic meteorites except the CI subgroup of carbonaceous chondrites. The composition of chondrules varies widely, and may consist of one or more of any number of silicate minerals, or glass. Chondrules apparently existed independently before their incorporation in meteorites, but their precise origin is still unclear. Whatever their origin, chondrules are clearly some of the most primitive solid material in the Solar System.

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chondrule

A Dictionary of Earth Sciences | 1999 | | Copyright

chondrule Small (0.1–2.0 mm), glassy, spherical to subspherical droplets, diagnostic of chondritic meteorites. They are thought to have been produced by the melting and sudden quenching of pre-existing silicate material. See CHONDRITE.

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AILSA ALLABY and MICHAEL ALLABY. "chondrule." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "chondrule." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-chondrule.html

AILSA ALLABY and MICHAEL ALLABY. "chondrule." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-chondrule.html

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