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picrite |
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picrite [′pi‚krīt] (petrology) A medium- to fine-grained igneous rock composed chiefly of olivine, with smaller amounts of pyroxene, hornblende, and plagioclase felspar. 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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| Melt, fluid and crystal inclusions in olivine phenocrysts from Kerguelen plume-derived picritic basalts; evidence for interaction with the Kerguelen Plateau lithosphere: Chemical Geology, v. During the 2001-2002 field season Nevada Star and the Geological Survey of Canada geologists discovered previously unrecognized picritic (ferro-picrite) volcanic and pyroclastic flows up to 600 m thick proximal to the ultramafic intrusions which host many of the nickel-copper-platinum group element mineral occurrences. |
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