 | | Journal (article/letter/editorial) | | minerals provide clues about the impact events of meteorite parent bodies, including their size and mutual...in Arizona, which was the product of an iron meteorite INTRODUCTION The Earth’s crust and upper mantle...ion milling and ultramicrotomy. In the case of meteorite samples, the target particles for TEM observations...spinel was discovered in the shock vein of a meteorite, the Umbarger chondrite (L6; Xie et al. 2002b)...discovered in the shock veins of the Tenham and Peace River chondrites (L6; Putnis and Price 1979; Price |  | Ozawa, Shin, Ohtani, Eiji, Miyahara, Masaaki, Suzuki, Akio, Kimura, Makoto, Ito, Yoshinori (2009) Transformation textures, mechanisms of formation of high-pressure minerals in shock melt veins of L6 chondrites, and pressure-temperature conditions of the shock events. Meteoritics & Planetary Science, 44 (11) 1771-1786 doi:10.1111/j.1945-5100.2009.tb01206.x | Journal (article/letter/editorial) | | Sahara 98222. Wadsleyite, ringwoodite, majorite, akimotoite, jadeite, and lingunite (NaAlSi3O8-hollandite)...ringwoodite, which has been described from this meteorite in a previous report (Grossman 1999). Jadeite...identified ringwoodite, wadsleyite, majorite, akimotoite, jadeite, and lingunite (NaAlSi3O8-hollandite)...jadeite-containing grains; and Mtx = matrix of the SMVs. of akimotoite were also identified in the coarse-grained fragments...coarse-grained enstatite (Figs. 5d and 7e). Individual akimotoite crystals are granular with a diameter up to 1 |  | Ferroir, Tristan, Beck, Pierre, Van de Moortèle, Bertrand, Bohn, Marcel, Reynard, Bruno, Simionovici, Alexandre, El Goresy, Ahmed, Gillet, Philippe (2008) Akimotoite in the Tenham meteorite: Crystal chemistry and high-pressure transformation mechanisms. Earth and Planetary Science Letters, 275 (1) 26-31 doi:10.1016/j.epsl.2008.07.048 | Journal (article/letter/editorial) | | r. c o m / l o c a t e / e p s l Akimotoite in the Tenham meteorite: Crystal chemistry and high-pressure...Stixrude Keywords: tenham chondrite shock melt vein akimotoite perovskite a b s t r a c t The transformation...transformation of pyroxene to its high-pressure polymorph akimotoite (MgSiO3 ilmenite type structure) is documented...Four textural relationships between pyroxene and akimotoite are observed in former pyroxene grains entrained...entrained enstatite grains the transformation to akimotoite is partial. One third of the grain is transformed |  | Stöffler, Dieter, Hamann, Christopher, Metzler, Knut (2019) Addendum to “Stöffler, D., Hamann, C., and Metzler, K., Shock metamorphism of planetary silicate rocks and sediments: Proposal for an updated classification system. Meteoritics & Planetary Science 53, 5–49, 2018”. Meteoritics & Planetary Science, 54 (4) 946-949 doi:10.1111/maps.13246 | Journal (article/letter/editorial) | | (ringwoodite, wadsleyite, ahrensite, majorite, akimotoite, bridgmanite, shenzhuangite, and lingunite: Binns...that all samples taken from a large meteorite or from a meteorite strewn field show the same degree of...natural (Mg,Fe)2SiO4 spinel group in the Tenham meteorite. Nature 221:943–944. Liu L.-G. and El Goresy A...new shock-metamorphic mineral from the Tissint meteorite: Implications for the Tissint shock event on Mars...Wadsleyite, natural ß-(Mg,Fe)2SiO4 from the Peace River meteorite. Canadian Mineralogist 21:29–35. Rubin A |  | | Journal (article/letter/editorial) | | a shock-induced melt vein in an H chondritic meteorite. The bulk chemical composition of these aggregates...(wadsleyite, ringwoodite), lowCa pyroxene (majorite, akimotoite, and perovskite-phase), and plagioclase (hollandite-phase)...with augite composition in a shocked Martian meteorite [12]. However, high-pressure phase transition...(majorite)+ CaSiO3 -perovskite, MgSiO3 -ilmenite (akimotoite) 0012-821X / 03 / $ ^ see front matter 9 2003... 2. ATEM observations We examined the Y75100 meteorite collected in Antarctica, which is an ordinary |  | Ma, Chi, Tschauner, Oliver, Bindi, Luca, Beckett, John R., Xie, Xiande (2019) A vacancy‐rich, partially inverted spinelloid silicate, (Mg,Fe,Si)
2
(Si,□)O
4
, as a major matrix phase in shock melt veins of the Tenham and Suizhou L6 chondrites. Meteoritics & Planetary Science, 54 (9) 1907-1918 doi:10.1111/maps.13349 | Journal (article/letter/editorial) | | the melt matrices concluded that majorite and akimotoite were the major phases. Our contrasting result...shock-generated mineral assemblages. Iron-bearing akimotoite (Sharp et al. 1997; Tomioka and Fujino 1997;...garnet and akimotoite (Sharp et al. 1997; Tomioka and Fujino 1997; Ferroir et al. 2008). Akimotoite, a high-pressure...chondrites, however, akimotoite can contain 5–7 mole% hemleyite, the Fe-analog of akimotoite, and values exceeding...nucleation and growth of the stable phase assemblage. Akimotoite has been reported as a major quench phase in |  | Bindi, Luca, Brenker, Frank E., Nestola, Fabrizio, Koch, Tamara E., Prior, David J., Lilly, Kat, Krot, Alexander N., Bizzarro, Martin, Xie, Xiande (2019) Discovery of asimowite, the Fe-analog of wadsleyite, in shock-melted silicate droplets of the Suizhou L6 and the Quebrada Chimborazo 001 CB3.0 chondrites. American Mineralogist, 104 (5) 775-778 doi:10.2138/am-2019-6960 | Journal (article/letter/editorial) | | Keywords: Wadsleyite, iron, spinelloid, chondrite, meteorite, crystal structure, microprobe analysis, Earth’s...Co-type material (Quebrada Chimborazo 001 CB meteorite) is preserved at the Goethe University Frankfurt...inside the bright Fe,Ni-metal) in the Suizhou meteorite. Bottom: Enlarged region highlighted in the top...Fe-rich wadsleyite (Fa35–45). Suizhou is a shocked meteorite with occurrence of thin, less than 300 μm in thickness...ringwoodite, majorite, majorite-pyrope garnet, akimotoite, hemleyite, magnesiowüstite, lingunite, tuite |  | | Book | | Maj MChr mCt Akimotoite (MgSiO3 with ilmenite-type structure) Aluminum-rich akimotoite Aluminum-rich...perovskite Monoclinic pyroxene Chromium-rich akimotoite Chromium-rich bridgmanite Cr-rich garnet Corundum...the K14 and K10 kimberlites, Buffalo Hills, Alberta, Canada: diamond growth in a plume. Lithos 77:99–111...octahedral sites in mineral structures (garnet, akimotoite, bridgmanite, chromite, and high-pressure phases...Brezinaite was registered only in the Tucson iron meteorite (Busch and Fuchs 1969), in which the oxygen activity |  | | Journal (article/letter/editorial) | | the clues to understand the impact events of meteorite parent bodies, but also insights on the structure...中のショックベインか ら発見された(Putnis and Price, 1979)。その後，Peace River コンドライト( L6 )からも同様の鉱物が発見され， オーストラリアの結晶学者 A.D....成 し て い る も の が Peace ロンの板状リングウッダイトを発見し，これをリングウッ ン石中に板状のリングウッダイトが成長するため，リング River, ALHA78003, Y74445...al., 2008 and 2009)。Miyahara et al. (2008)は Peace River コンドライト ウッダイトラメラはコヒーレントな相転移により生成した ( L6 )のシ...wadsleyite (Wd) and ringwoodite (Rw) in the Peace River L6 chondrite (Miyahara et al., 2008). There is |  | | Journal (article/letter/editorial) | | crystallized from the melt in the SMV matrix of meteorite. P-T conditions of the formation of the SMV matrix...microstructure previously described in the Novosibirsk meteorite, and that is very similar to the texture of tissintite...tissintite in the Tissint martian meteorite. It is likely that jadeite is related to crystallization of...formed by shock metamorphism during collisions of meteorite parent bodies. The shock events caused the melting...highpressure minerals, such as wadsleyite, ringwoodite, akimotoite, MgSiO3-perovskite (bridgmanite), magnesiowüstite |  | | Journal (article/letter/editorial) | | poorly constrained or inaccessible such as in the akimotoite-hemleyite system (Bindi et al. 2017; Tschauner...coordination of ions. Examples are stishovite, akimotoite, and bridgmanite. The stability fields of both...2017). In 2008, Dera et al. discovered that the meteorite mineral allabogdanite, Fe2P, is the result of...Recently stishovite was reported from a lunar meteorite (Kaneko et al. 2015). Presence of stishovite in...for the peak shock pressures that the Shergotty meteorite had experienced prior ejection from Mars (Fritz |  | | Journal (article/letter/editorial) | | high-pressure silicates (e.g., ringwoodite, wadsleyite, akimotoite, etc.) that otherwise are expected to occur in...shock veins, which irregularly transect the bulk meteorite. To understand the origin of these high-pressure...(2000a) "Eclogitic" minerals in a shocked basaltic meteorite. Earth Planet. Sci. Lett. 176,259-265. LANGENHORST...of Solids-Shock Chemistry with Applications to Meteorite Impacts (eds. L. Davison, Y. Horie and T. Sekine)...Wadsleyite, natural j3-(Mg,FehSi04 from the Peace River meteorite. Can. Mineral. 21, 29-35. RAIKES S. A. AND |  | | Journal (article/letter/editorial) | | 859–869, 2013 The pressures and temperatures of meteorite impact: Evidence from micro-Raman mapping of mineral...ringwoodite; majorite; wadsleyite; magnesiowüstite; akimotoite; lingunite; silicate–perovskite; and maskelynite...discovery by Binns et al. (1969) in the Tenham meteorite (e.g., Gupta and Goyal 2011; Madon and Poirier...shearing during the shock event that extracted the meteorite from its parent body. The melt veins form a network...ringwoodite and olivine were found so far in Taiban meteorite under optical microscope and SEM observations |  | | Journal (article/letter/editorial) | | ringwoodite, majorite, wadsleyite, magnesiowüstite, akimotoite, hollandite-structured plagioclase and silicate–perovskite...chondrite Tenham was obtained from the Center for Meteorite Studies at Arizona State University (ASU sample...back-transformed poststishovite silica in the martian meteorite Shergotty [28] have been interpreted to indicate...polymorphs of pyroxene (orthopyroxene, clinopyroxene, akimotoite and perovskite). The d-spacings, interplanar...Acknowledgements We thank Carlton Moore and the Center for Meteorite Studies at Arizona State University for supplying |  | Ma, Chi, Tschauner, Oliver, Beckett, John R., Rossman, George R., Prescher, Clemens, Prakapenka, Vitali B., Bechtel, Hans A., MacDowell, Alastair (2018) Liebermannite, KAlSi3
O8
, a new shock-metamorphic, high-pressure mineral from the Zagami Martian meteorite. Meteoritics & Planetary Science, 53 (1) 50-61 doi:10.1111/maps.13000 | Journal (article/letter/editorial) | | high-pressure mineral from the Zagami Martian meteorite Chi MA 1,*, Oliver TSCHAUNER 2, John R. BECKETT1...silicate mineral, in the Zagami basaltic shergottite meteorite. Liebermannite crystallizes in space c = 2.74... 51 (a) (b) SAMPLE AND METHODS The Zagami meteorite, which fell at Zagami, Katsina Province, Nigeria...is one of only five Martian meteorite falls (versus ~100 Martian meteorite finds). The type material of...meteoritic ringwoodite, ahrensite, bridgmanite, akimotoite, and wadsleyite (Tschauner et al. 2014; Ma et |  | | Journal (article/letter/editorial) | | characteristics of shock-induced microstructures in the two meteorite major phases, kamacite (bcc, Ni-poor) and taenite...dislocations tend to form cell structures (Iron meteorite Gibeon - TEM bright field). (b) Dislocations in...hollandite, stishovite and omphacite in the Martian meteorite Zagami. These high-pressure minerals are embedded...have been recently discovered in the Martian meteorite Shergotty (SiO2 is a minor phase in meteorites...of the metallic and silicate phases in a given meteorite may thus allow a better estimation of the shock |  | | Journal (article/letter/editorial) | | 日本鉱物科学会賞第回受賞者 受賞記念研究紹介 隕石中の鉱物：序説 Introduction to Meteorite Mineralogy 木村 眞(Makoto KIMURA) Minerals in...primarily larger than previously estimated. Keywords: Meteorite, New mineral, Enstatite chondrite, Refractory...NWA 4719 (L6), consisting of ringwoodite (Rw), akimotoite (Aki), lingunite (Lin), and pyroxene glass (PxGl)...Ringwoodite, natural (Mg, Fe)2SiO4 spinel in the Tenham meteorite. Nature, 221, 943944. Chen, M., Sharp, T. G....poststishovite polymorph of silica in the Shergotty meteorite. Science, 288, 16321634. El Goresy, A., Gillet |  | | Journal (article/letter/editorial) | | recognized and defined at terrestrial impact craters in Canada and Germany around 1965. The driving force for...Earth-crossing orbit and found on Earth as a meteorite. The procedures to detect multiple consecutive...geological conditions under which a specific meteorite was affected by shock compression are not known...these scenarios, the potential delivery of a meteorite to Earth depends on the approach velocity of the...pleochroism (if present), transformation to majorite, akimotoite, and bridgmanite, decomposition to oxides, and |  | | Journal (article/letter/editorial) | | weathering category A (Meteorite Newsletter 15), Y-980223 is listed as category A/B (Meteorite Newsletter 16)...cardboard slides. For standards we used the Allende meteorite (Jarosewich et al., 1987), the USGS international...1994), and the North Chile (Filomena) IIAB iron meteorite. Analyses were carried out following a protocol...difficult to use these data to determine whether this meteorite is more closely related to EH or EL chondrites...with increasing volatility. In contrast, the meteorite exhibits a much more complex fractionation pattern |
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