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eucrite |
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eucrite [′yü‚krīt] (mineralogy) An olivine-bearing gabbro containing unusually calcic plagiocase; a meteorite component. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The rock belongs to a group of meteorites known as eucrites and considered to be fragments chipped from the giant asteroid 4 Vesta. The three meteorite types -- the eucrites, howardites and diogenites -- came from an asteroid big enough for its surface rock to melt, possibly from the heat of radioactive elements inside it, concludes a team headed by Dale P. This one, too, resembles a eucrite, but its ratio of iron to manganese resembles that of other lunar rock types, notes Keizo Yanai of the Institute of Polar Research in Tokyo. |
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