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| following estimated mineral specific gravities: plagioclase, 2.75; pigeonite, 3.53; silica, 2.32; chromite...et al., 1991). All consist of major pyroxene, plagioclase, and silica, and accessory to minor troilite...and less TiOz than the finer-grained pebbles. Plagioclase exhibits ~lysynthetic and Carlsbad twinning....crystallographically oriented inside the plagioclase grains. Mean plagioclase compositions range from Ab 3.9 to...Gabbroic pebbles 17, 18, 20, and 21 contain plagioclase with less NazO than the finer-grained pebbles |
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| the samples studied. Trace element anomaliesb Meteorite Split Sample type Nonantarctic Chervony Kut...the samples studied. Trace element anomaliesb Meteorite Split Sample type Antarctic eucritic clast...classification is that used in the JSC online meteorite catalog. b Ce/Ce* are flagged as being either...manually checked and corrected if necessary. In meteorite analysis, sample representativeness is an issue...Mittlefehldt et al., 1998; Drake, 2001). The antarctic meteorite collections offer a treasure trove of new eucrites |
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| basaltic and gabbroic clasts contain xenocrystic plagioclase. The basaltic clasts commonly show superchondritic...tridymite, merrillite, and augite. Xenocrystic plagioclase is a natural consequence of remelting a cumulate... Mittlefehldt I lhh Table 1. Summary of meteorite Mesasiderites Clover Sprinysl Crab Orchard Crab...silica solid solution m plagioclase has been suggested to occur in lunar plagioclase hascd on microprobe...BEE, IQXO~. ‘The trid:+mrrerich cores of the plagioclase contain -7 wt’: trrdymitr has& on point counting |
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| the surface, so rapidly that portions of the meteorite and the ground which were in contact were vaporized...people wondered about what would happen if a large meteorite fell to the ground, but they were limited by the...meteorites and the corollary that the size of the meteorite was quite small relative to the crater it could...an equal mass of TNT. The kinetic energy of a meteorite changes with the square of the velocity and hence...far more probable that the angle of impact of a meteorite with earth or moon is low rather than high. Previously |
