 | | Journal (article/letter/editorial) | | mineral specific gravities: plagioclase, 2.75; pigeonite, 3.53; silica, 2.32; chromite, 5.09; ilmenite...the pebbles. Pyroxene occurs mainly as inverted pigeonite consisting of orthopyroxene with a few thick augite...Binda, 2.0; Moama, 6.3 (MITTLEFEHLDT, 1979a); Medanitos, 5.7 (KIESL et al., 1978); Moore County, 1.7;and...(long-dashed line). Labeled points are: EEET87548; Me-Medanitos; Mo-Moama; 6-pebble 6; I g-pebble 18; and S-hypothetical...melts with trace element contents like those of Medanitos (Me in Fig. 2). These model cumulates are similar |  | | Journal (article/letter/editorial) | | magmatic phase (i.e., they are pigeonite-augite basalts, while eucrites are pigeonite basalts) and contain on... Mittlefehldt I lhh Table 1. Summary of meteorite Mesasiderites Clover Sprinysl Crab Orchard Crab...enclosing subhedral to euhedral plagioclase, augite, pigeonite, chromite, ilmenite, troilite, and phosphate grains...compositions are offset to lower Fe/Mg relative to pigeonite as a consequence of normal Fe-Mg partitioning...of low-Ca matrix pyroxenes (balloon). In (b), pigeonite plots at higher Fe/Mg than augite because of normal |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (article/letter/editorial) | | 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 |
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