 | 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) | | a major matrix phase in shock melt veins of the Tenham and Suizhou L6 chondrites Chi MA 1* , Oliver... was discovered within shock melt veins in the Tenham and Suizhou meteorites, two highly shocked L6 ordinary...remainder composed of a vitrified (Mg,Fe)SiO3 phase (in Tenham) or (Mg,Fe)SiO3-rich clinopyroxene (in Suizhou);...inferred conditions during shock melt cooling of the Tenham and Suizhou meteorites, revealing in particular...lower mantle (majorite, wadsleyite, ringwoodite, bridgmanite) were all originally discovered in shocked meteorites |  | | Journal (article/letter/editorial) | | and conditions of formation of akimotoite in the Tenham chondrite O. TSCHAUNER 1* , C. MA 2 , C. PRESCHER3...finding and the actual composition of akimotoite in Tenham, we show that this mineral has formed by solid–solid...volume difference between pure akimotoite and bridgmanite ranges only between 4 and 7% (Horiuchi © 2017...akimotoite from a section of the holotype specimen, the Tenham L6 chondrite. The application of these crystal-chemical...SAMPLES AND METHODS The Tenham L6 chondrite is type material for akimotoite, bridgmanite, and ringwoodite (Binns |  | Feng, Lu, Miyahara, Masaaki, Nagase, Toshiro, Ohtani, Eiji, Hu, Sen, El Goresy, Ahmed, Lin, Yangting (2017) Shock-inducedP-Tconditions and formation mechanism of akimotoite-pyroxene glass assemblages in the Grove Mountains (GRV) 052082 (L6) meteorite. American Mineralogist, 102 (6) 1254-1262 doi:10.2138/am-2017-5905 | Journal (article/letter/editorial) | | assemblages in the Grove Mountains (GRV) 052082 (L6) meteorite Lu Feng1,2, Masaaki Miyahara3,4, Toshiro Nagase5...highly equilibrated low iron ordinary chondritic meteorite (L6). Coexistence of ringwoodite, majorite, and...almost identical compositions of akimotoite, bridgmanite [(Mg,Fe)SiO3-perovskite], or pyroxene glass to...from pyroxene to akimotoite and preexisting bridgmanite that could be vitrified. The observed fractionation...Akimotoite, pyroxene glass, high-pressure polymorphs, meteorite, shock, impact Introduction Orthopyroxenes [(Mg |  | | 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...ringwoodite, was discovered in the shock vein of the Tenham chondrite (L6; Binns et al. 1969). Ringwoodite...spinel was discovered in the shock vein of a meteorite, the Umbarger chondrite (L6; Xie et al. 2002b) |  | | Journal (article/letter/editorial) | | structure—a high-pressure silicate discovered in the Tenham chondrite (Ma et al. 2018a). Over the past six...chondrites, shergottites, and one eucrite), including bridgmanite (MgSiO3-perovskite, the most abundant mineral...Mineral name tissintite ahrensite liebermannite bridgmanite zagamiite riesite wangdaodeite hemleyite ice-VII...al. (2016) Zagami shergottite Ma et al. (2018c) Tenham L6 chondrite Tschauner et al. (2014) Zagami, NWA...2018) and the type machiite in the Murchison CM meteorite (Makide et al. 2013). This implies that machiite |  | | Journal (article/letter/editorial) | | unknown high compatibility of Ti in Fe-rich bridgmanite. Some shock-metamorphic minerals are dominated...ions. Examples are stishovite, akimotoite, and bridgmanite. The stability fields of both incipient and proper...bonding character as stishovite, hexaferrum, or bridgmanite. In need of a criterion for many different structures...and for compounds like silica: For instance, bridgmanite is MgSiO3 (which can be generally written as...and B above 0.95 and 0.8, respectively. Hence, bridgmanite is a high-pressure mineral according to our definition |  | | Journal (article/letter/editorial) | | pressure and temperature increase imposed on the meteorite are essential (1) to interpret isotopic measurements...phases such as ringwoodite, majorite (garnet), bridgmanite (silicate perovskite), and many others form at...a 0.4 m diameter meteorite in space (Fritz et al. 2005b) (Fig. 2): (1) bridgmanite (Tschauner et al....example, the preservation of bridgmanite in the Tenham L6 chondrite meteorite (Tschauner et al. 2014) implies...around 2 km s 1. I II III Fig. 10. Sketch of a meteorite hosting a melt vein with different thickness. |  | 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) | | wadsleyite, ahrensite, majorite, akimotoite, bridgmanite, shenzhuangite, and lingunite: Binns et al. 1969;...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...new shock-metamorphic mineral from the Tissint meteorite: Implications for the Tissint shock event on Mars... natural ß-(Mg,Fe)2SiO4 from the Peace River meteorite. Canadian Mineralogist 21:29–35. Rubin A. E., |  | | Journal (article/letter/editorial) | | it is important to investigate a variety of meteorite samples with different preshock conditions and...to better understand the correlation between meteorite shock features and planetary impact conditions...ringwoodite, wadsleyite, garnet, akimotoite, vitrified bridgmanite, and magnesiow€ ustite plus magnetite. Thermodynamic...the impact velocity and projectile size on the meteorite parent body. Ohtani et al. (2004) and DeCarli...high-pressure experiments, such as those in Sixiangkou, Tenham, and Y-791384 L6 chondrites (Chen et al. 1996; |  | Ma, Chi, Tschauner, Oliver, Beckett, John R., Liu, Yang, Rossman, George R., Sinogeikin, Stanislav V., Smith, Jesse S., Taylor, Lawrence A. (2016) Ahrensite, γ-Fe2SiO4, a new shock-metamorphic mineral from the Tissint meteorite: Implications for the Tissint shock event on Mars. Geochimica et Cosmochimica Acta, 184. 240-256 doi:10.1016/j.gca.2016.04.042 | Journal (article/letter/editorial) | | new shock-metamorphic mineral from the Tissint meteorite: Implications for the Tissint shock event on Mars...(c-Mg2SiO4). It occurs in the Tissint Martian meteorite, where it forms through the transformation of...quenched melt or fayalite-pigeonite intergrowth ) bridgmanite + wüstite ) ahrensite and/or ringwoodite ) highly-deformed...metamorphism; Nanomineral; Ringwoodite group; Tissint meteorite; Martian shergottite; Synchrotron diffraction ...heavily shocked ordinary chondrites. The Tissint meteorite is an olivine-phyric shergottite, consisting mainly |  | Liu, Zhaodong, Dubrovinsky, Leonid, McCammon, Catherine, Ovsyannikov, Sergey V., Koemets, Iuliia, Chen, Luyao, Cui, Qi, Su, Na, Cheng, Jinguang, Cui, Tian, Liu, Bingbing, Katsura, Tomoo (2019) A new (Mg0.5Fe0.53+)(Si0.5Al0.53+)O3 LiNbO3-type phase synthesized at lower mantle conditions. American Mineralogist, 104 (8) 1213-1216 doi:10.2138/am-2019-7070 | Journal (article/letter/editorial) | | octahedra. This phase is probably recovered from bridgmanite at lower-mantle conditions by a diffusionless...distortion of BO6 octahedra on releasing pressure. Bridgmanite can thus contain the FeAlO3 component (50 mol%)...Fe3+- and Al3+-rich LiNbO3-type compound from bridgmanite at lower mantle conditions. This new compound...complicated crystal chemistry of LiNbO3-type phase/ bridgmanite and constrains the pressure and temperature conditions...meteorites. Keywords: LiNbO3-type, single crystals, bridgmanite, crystal chemistry, lower mantle Introduction |  | | Journal (issue) | | ...... 3 The Beautiful Fukang (Careful Now!) Meteorite........................................ 4 Lapidary...and Aloha! The Beautiful Fukang (Careful Now!) Meteorite http://www.amusingplanet.com/2013/05/the-beau...03/16, via The Rockhounder 05/2016 T he Fukang meteorite, believed to be some 4.5 billion years old, which...in China in 2000. It is a pallasite, a type of meteorite with translucent golden crystals of a mineral...silvery honeycomb of nickel-iron. It’s a gorgeous meteorite, and possibly the most stunning extraterrestrial |  | Zedgenizov, Dmitry, Kagi, Hirioyuki, Ohtani, Eiji, Tsujimori, Tatsuki, Komatsu, Kazuki (2020) Retrograde phases of former bridgmanite inclusions in superdeep diamonds. Lithos, 370. 105659pp. doi:10.1016/j.lithos.2020.105659 | Journal (article/letter/editorial) | | Journal Pre-proof Retrograde phases of former bridgmanite inclusions in superdeep diamonds Dmitry Zedgenizov...Ohtani, et al., Retrograde phases of former bridgmanite inclusions in superdeep diamonds, LITHOS (2020)... Journal Pre-proof Retrograde phases of former bridgmanite inclusions in superdeep diamonds Dmitry Zedgenizov1...Japan ro of 1 -p Abstract (Mg,Fe)SiO3 bridgmanite is the dominant phase in the lower mantle; however...structure. To identify retrograde phases of former bridgmanite single-phase and composite inclusions of (Mg |  | Kayama, Masahiro, Sekine, Toshimori, Tomioka, Naotaka, Nishido, Hirotsugu, Kato, Yukako, Ninagawa, Kiyotaka, Kobayashi, Takamichi, Yamaguchi, Akira (2018) Cathodoluminescence of high-pressure feldspar minerals as a shock barometer. Meteoritics & Planetary Science, 53 (7) 1476-1488 doi:10.1111/maps.13092 | Journal (article/letter/editorial) | | on maskelynite and lingunite in L6 chondrites of Tenham and Yamato-790729. Under CL microscopy, bright...Maskelynite occurs widely in various types of shocked meteorite (e.g., lunar meteorites, shergottites, and ordinary...maskelynite, and lingunite in the L6 chondrites of Tenham and Yamato-790729 and to develop better CL barometer...MATERIALS We used two thin sections of L6 chondrites of Tenham from the Department of Geology and Paleontology...optical and electron microscopic observations, Tenham consists of olivine, Cathodoluminescence of high-pressure |  | | Journal (article/letter/editorial) | | hypervelocity impact on the parent body of the meteorite, olivine in the meteorites always has been modified...decomposition [2,6–9]. Olivine provides an index for a meteorite shock classification scheme, i.e., shock levels...decomposes to (Mg,Fe)SiO3 –perovskite (named bridgmanite) and (Mg,Fe)O–periclase [15–20]. Natural ringwoodite...ringwoodite was first discovered in the Tenham L6 chondrite [21], and so far it was identified only in shocked...microscope in reflected light confirmed that this meteorite was strongly affected by shock metamorphism, which |  | 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...1969; Ma et al. 2016; Bindi et al. 2018), and bridgmanite (Tschauner et al. 2014) have been discovered...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 |  | | Journal (article/letter/editorial) | | and Kamargaon (L6). The Raman spectra of these meteorite samples show the presence of nanodiamonds at 1334–1345...2014; Tomioka et al. 2016). There are about 150 meteorite falls and finds have reported from India (http://www...Raman spectra were collected on bulk powdered meteorite samples using a Nd: YAG laser with a power of...between 10 and 60 s. The composition of the three meteorite samples was also determined by the X-ray diffraction...the intensities of these peaks of the studied meteorite samples are high and peaks are better resolved |  | | Journal (article/letter/editorial) | | shock melt vein in the Villalbeto de la Pe~ na meteorite: Insights into the shock behavior of diopside...not been described previously in any shocked meteorite. Collectively, all these different lines of evidence...have been discovered in meteorites, such as bridgmanite (Tomioka and Fujino 1997; Tschauner et al. 2014)...tetragonal majorite + CaSiO3-perovskite, and bridgmanite (MgSiO3-perovskite) + CaSiO3-perovskite-; and...majorite was first reported in the Shergotty Martian meteorite (Malavergne et al. 2001). It has an augitic composition |  | Kato, Yukako, Sekine, Toshimori, Kayama, Masahiko, Miyahara, Masaaki, Yamaguchi, Akira (2017) High-pressure polymorphs in Yamato-790729 L6 chondrite and their significance for collisional conditions. Meteoritics & Planetary Science, 52 (12) 2570-2585 doi:10.1111/maps.12957 | Journal (article/letter/editorial) | | GPa. The dissociation reaction from olivine to bridgmanite + magnesiow€ ustite (e.g., Miyahara et al. 2011)...of low-Ca pyroxene is regarded as vitrified bridgmanite (Tomioka and Fujino 1997). Considering the coexistence...of majorite and akimotoite and the absence of bridgmanite, the shock pressure and temperature conditions...Pressure-temperature phase diagram for the Allende meteorite. Journal of Geophysical Research 100:17,725– 17...CaTi2O4-structured FeCr2O4 polymorph in the Suizhou meteorite and its significance in mantle mineralogy. Geochimica |  | | Journal (article/letter/editorial) | | dissociative transition to orthorhombic (Mg,Fe)SiO3 bridgmanite and cubic (Mg,Fe)O ferropericlase, a pair that...55] in the heavily shocked Tenham chondritic meteorite which fell in Australia in 1879 [56]. Minerals 2021...55] in the heavily shocked Tenham chondritic meteorite which fell in Australia in 1879 [56]. The lattice...may be comparable to those experienced during meteorite impact which produced ε-Mg2 SiO4 . Similarities...surrounding α-olivine when investigating the Tenham meteorite. They attributed this partitioning to solid |  | Ishii, Takayuki, Sinmyo, Ryosuke, Komabayashi, Tetsuya, Ballaran, Tiziana Boffa, Kawazoe, Takaaki, Miyajima, Nobuyoshi, Hirose, Kei, Katsura, Tomoo (2017) Synthesis and crystal structure of LiNbO3-type Mg3Al2Si3O12: A possible indicator of shock conditions of meteorites. American Mineralogist, 102 (9) 1947-1952 doi:10.2138/am-2017-6027 | Journal (article/letter/editorial) | | by the back-transformation after the garnet-bridgmanite transition, and will indicate shock conditions...conditions around 45 GPa and 2000 K. Keywords: Bridgmanite, large volume press, Rietveld analysis, LiNbO3, high...of MgSiO3 with the orthorhombic Pv-structure (bridgmanite, Brg), because Brg is considered to be the most...with a lower Al2O3 content can be recovered. Bridgmanite has the orthorhombic perovskite structure that...the A-site cation even smaller. Accordingly, bridgmanite with pyrope composition has likely a much more |  | | Journal (article/letter/editorial) | | periclase and perovskite-structured (Mg,Fe)SiO3, bridgmanite (Tschauner et al. 2014). INTRODUCTION Planetary...was documented more than four decades ago in the Tenham L6 chondrite (Binns et al. 1969). Since this initial...specific transformation mechanism in a given meteorite. This study focuses on characterizing the degree...specimen is held by the University of Alberta Meteorite Collection, from which one polished thin section...with an optical microscope confirmed that this meteorite was strongly affected by shock metamorphism, which |  | | Journal (article/letter/editorial) | | al. 1962), ringwoodite (Binns et al. 1969), bridgmanite (Tschauner et al. 2014) and others, have been...le complexes. This crater was confirmed as a meteorite impact site through the discovery of a series...magnesioferrite. The pressure pulse triggered by a meteorite (or asteroid) impact is a transient process, only...Pressuretemperature phase diagram for the Allende meteorite. Journal of Geophysical Research 100:17,725–17...725–17,740. Akaogi M. 2000. Clues from a shocked meteorite. Science 287:1602–1603. Akaogi M., Kusaba K., Susaki |  | | Journal (issue) | | Now scientists studying the Tenham meteorite in Queensland, Australia, have found tiny traces of the...formed when the meteorite hit the Earth in 1879. From the tiny bits in the meteorite, they determined...and the association has now approved the name bridgmanite, in honor of Percy Williams Bridgman (1882–1961)...missed. Deadline for Submissions January 2 Bridgmanite (above) was named for Percy Williams Bridgman |  | | 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...(Ol). Pyroxene glass was decomposed phase from bridgmanite. BSE image. 石母天体内の静水圧条件下では決して形成されなかったと 考えられ...Ringwoodite, natural (Mg, Fe)2SiO4 spinel in the Tenham meteorite. Nature, 221, 943944. Chen, M., Sharp, T...poststishovite polymorph of silica in the Shergotty meteorite. Science, 288, 16321634. El Goresy, A., Gillet |
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Tenham meteorite, Tenham Station, Windorah, Barcoo Shire, Queensland, Australia