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| to a carbonate coating on the exterior of the meteorite. Extensive minor element zoning occurs in carbonate...is driven by hydrolysis and oxidation in the meteorite interior that move the fluid composition to alkaline...The interface between the veins and the host meteorite is sharp and no alteration of material adjacent...may have formed along existing fractures in the meteorite. Carbonate may fill part or all of the fracture...veins originate from the carbonate layer on the meteorite exterior and extend into the interior of the stone |
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| majority of the coarse-grained components in this meteorite are surrounded by continuous, 1.5 to >200 μm wide...Tagish Lake are very similar throughout the entire meteorite and independent of the nature of the enclosed...core object and more gradational contacts to the meteorite matrix. Compared to the matrix, the rims are much...rims differ significantly from matrix and bulk meteorite only by being depleted in Ca. X-ray elemental...texture of the Tagish Lake meteorite. INTRODUCTION The Tagish Lake meteorite, which fell on January 18 |
 | King, A.J., Phillips, K.J.H., Strekopytov, S., Vita-Finzi, C., Russell, S.S. (2020) Terrestrial modification of the Ivuna meteorite and a reassessment of the chemical composition of the CI type specimen. Geochimica et Cosmochimica Acta, 268. 73-89 doi:10.1016/j.gca.2019.09.041 | Journal (article/letter/editorial) |
| com/locate/gca Terrestrial modification of the Ivuna meteorite and a reassessment of the chemical composition...susceptible to terrestrial weathering. The Ivuna meteorite, type specimen for the CI chondrites, is the largest...calculate a new average composition for the Ivuna meteorite, which we find is in good agreement with existing...carbonaceous chondrites consists of only five meteorite falls: Alais (fell 1806; total mass 6 kg), Orgueil...1999; Gounelle and Zolensky, 2001). The Ivuna meteorite, the type specimen of the CI chondrites, fell |
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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 |
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| 63 YEARS OF TERRESTRIAL RESIDENCE IN THE TATAHOUINE METEORITE. J. A. Barrat', Ph. Gilletz, Th. Heulin3...contamination processes. Comparison between clasts of the Tatahouine diogenite collected the day of the fall in 1931...0-isotopic analysis of the carbonates within the Tatahouine meteorite and the underlying ground confirm their...were observed on the external surfaces of the meteorite fragments collected in 1994 and on gravels, gun...bacteria clusters from the soil in which the meteorite samples were embedded. This study emphasizes the |
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| (Dhofar 007) and noncumulated (NWA 011). Results: A meteorite shower, 37 pieces weighing a total of 21,270 g...REE pattern supports a cumulate type of this meteorite also. At the other side the data of NWA 011 are...REE pattern supports a noncumulate type of this meteorite. Thus, these two meteorites belong to different...local materials and not from a widespread mix of meteorite types. From these observations we infer that the...metal grain volumetric difference between the two meteorite classes. Because of the problem of pairing meteorites |
