 | Tsuchiyama, Akira, Uesugi, Masayuki, Uesugi, Kentaro, Nakano, Tsukasa, Noguchi, Ryo, Matsumoto, Toru, Matsuno, Junya, Nagano, Takashi, Imai, Yuta, Shimada, Akira, Takeuchi, Akihisa, Suzuki, Yoshio, Nakamura, Tomoki, Noguchi, Takaaki, Abe, Masanao, Yada, Toru, Fujimura, Akio (2014) Three-dimensional microstructure of samples recovered from asteroid 25143 Itokawa: Comparison with LL5 and LL6 chondrite particles. Meteoritics & Planetary Science, 49 (2) 172-187 doi:10.1111/maps.12177 | Journal (article/letter/editorial) | | Kilabo meteorites) and an LL5 chondrite (Tuxtuac meteorite) was investigated by the same method for comparison...particles from the Ensisheim meteorite (LL6), ten particles from the Kilabo meteorite (LL6), and fifteen particles...particles from the Tuxtuac meteorite (LL5) were used. Pieces of the meteorites were crushed by gently hitting...hitting a larger meteorite piece against the tips of tweezers. Fragmented particles having similar size...low-Ca pyroxene; HPx = high-Ca pyroxene; Pl = plagioclase; Tr = troilite; Tae = taenite; Kam = kamacite; |  | Matsumoto, Toru, Tsuchiyama, Akira, Uesugi, Kentaro, Nakano, Tsukasa, Uesugi, Masayuki, Matsuno, Junya, Nagano, Takashi, Shimada, Akira, Takeuchi, Akihisa, Suzuki, Yoshio, Nakamura, Tomoki, Nakamura, Michihiko, Gucsik, Arnold, Nagaki, Keita, Sakaiya, Tatsuhiro, Kondo, Tadashi (2016) Nanomorphology of Itokawa regolith particles: Application to space-weathering processes affecting the Itokawa asteroid. Geochimica et Cosmochimica Acta, 187. 195-217 doi:10.1016/j.gca.2016.05.011 | Journal (article/letter/editorial) | | discussion. We cut a ~5 mm thick slice of the Tuxtuac meteorite (LL5) using a precision saw and observed the...of the cross section. The Tuxtuac meteorite is classified as a fall meteorite in the Meteoritical 6 Bulletin...Database (http://www.lpi.usra.edu/meteor/). The Tuxtuac meteorite lacks extensive brecciation and exhibits some...done prior to the observations, except for the meteorite slice, which was cleaned in an ultrasonic bath...analysis. The 3D microstructures of the Itokawa and meteorite samples were observed using microtomography (Tsuchiyama |  | | Book | | centre. Examples are most important minerals like plagioclase, microcline (7 Sect. 11.6.2), kyanite (. Fig...fourfold rotary inversion axis in c. Example: the meteorite mineral schreibersite (Fe,Ni)3P. 5 4/m, tetr.-dipyramidal:...equalisation). The most prominent example is the plagioclase solid-solution series with the end members albite...fayalite, Fe2[SiO4], or Na+Si4+ ⇋ Ca2+Al3+ in plagioclase with the end members albite, Na[AlSi3O8], and...of gypsum have been found in caves in Chihuahua, Mexico, where they formed by solution of anhydrite rock |
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