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picrite
(redirected from picritic)

   Also found in: Encyclopedia 0.01 sec.
picrite [ˈpɪkraɪt]
n
(Earth Sciences / Geological Science) a coarse-grained ultrabasic igneous rock consisting of olivine and augite with small amounts of plagioclase feldspar


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2001, A note on the IUGS reclassification of the high-Mg and picritic volcanic rocks: Journal of Petrology, 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.
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.
 
 
 
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