 | | Report (issue) | | 11.524{11.543 Z=8 X-ray Powder Pattern: Coorara meteorite; * = overlap with goethite impurity. (ICDD...76] Chemistry: 4.61 8.64 30.99 1.63 (1) Coorara meteorite; by electron microprobe, average of ¯ve analyses;...Cr0:03 )§= 2:06 Si3:00 O12 : (2) Pampa del In¯erno meteorite; by electron microprobe, original total given...Pyroxene, ringwoodite, olivine, kamacite, goethite, troilite. Distribution: In the Coorara, Catherwood...(1970) Pyroxene-garnet transformation in Coorara meteorite. Science, 168, 832{833. (2) (1970) Amer. Mineral |  | | Journal (article/letter/editorial) | | natural silicate perovskite phase in the Tenham meteorite was found. These high-pressure silicate minerals...Tenham chondritic meteorite (L6) fell in 1879 in South Gregory, Queensland, Australia (258449S, 1428579E)...1428579E) (Spencer 1937). This meteorite consists mainly of olivine, orthoenstatite, diopside, plagioclase...the veins is also partially converted to blue ringwoodite. The black matrix of the vein is dominated by...(assumed to be amorphized silicate perovskite) and ringwoodite constituting the matrix of shock veins of Acfer |  | 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) | | o c a t e / e p s l Akimotoite in the Tenham meteorite: Crystal chemistry and high-pressure transformation...chondrite fell in 1879 in South Georgy, Queensland Australia. It is classified as an L6 ordinary chondrite of...of shock stage 4-5. Major phases in this meteorite are olivine, orthoenstatite, diopside, plagioclase...induced melt veins are cross-cutting the whole meteorite. In these shock melt veins, natural MgSiO3 ilmenite...cm- 1 for pyroxene, the peak at 843 cm- 1 for ringwoodite and a broad feature around 600 cm- 1 for the |  | | Journal (article/letter/editorial) | | It is found that the melt veins in the Suizhou meteorite morphologically are the simplest, straightest...maskelynite, it is estimated that the Suizhou meteorite experienced shock pressures and shock temperatures...occurrences of high-pressure phases such as ringwoodite, wadsleyite, majorite, among others (e.g., Binns...Fujino 1997). Rubin (1985) pointed out that ringwoodite and majorite were found in melt veins of seven...2001, 2002; Ozawa et al. 2009). However, tiny ringwoodite grains were identified by Raman spectroscopy in |  | | Journal (article/letter/editorial) | | similar in mineraiogy and chemistry to the host meteorite, but display shock rnet~o~hi~ features, produced...transitions of olivine and low-Ca pyroxene to ringwoodite and majorite, respectively; and Lineation that...greater than 300 kbar. THE PAMPA dei Iniierr~o meteorite was found in a ploughed field at Avia Terai...(1974) reported a new chemical analysis for this meteorite and confirmed its classification as an ordinary... The various shock m~amo~hic features in the meteorite are used in conjunction with experimental shock-wave |  | 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) | | shocked L6 ordinary chondrites. Relative to ringwoodite, this phase exhibits an inversion of Si coupled...zone and lower mantle (majorite, wadsleyite, ringwoodite, bridgmanite) were all originally discovered...endmember compositions by the stability fields of ringwoodite or wadsleyite plus stishovite (e.g., Fabrichnaya...rare fragments in the shock vein of the Tenham meteorite (due to transformation of low-Ca pyroxene), together...with olivine and plagioclase transformed into ringwoodite and diaplectic glass (Tomioka et al. 2016). Abundant |  | 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) | | near melt veins/pockets of shock stages S5–S6 (ringwoodite, wadsleyite, ahrensite, majorite, akimotoite...that all samples taken from a large meteorite or from a meteorite strewn field show the same degree of...stage indicators. First, with the exception of ringwoodite, they cannot be safely identified by the polarizing...S. J. B. 1969. Ringwoodite, natural (Mg,Fe)2SiO4 spinel group in the Tenham meteorite. Nature 221:943–944...new shock-metamorphic mineral from the Tissint meteorite: Implications for the Tissint shock event on Mars |  | Rout, Surya S., Heck, Philipp R., Zaluzec, Nestor J., Ishii, Takayuki, Wen, Jianguo, Miller, Dean J., Schmitz, Birger (2017) Shocked chromites in fossil L chondrites: A Raman spectroscopy and transmission electron microscopy study. Meteoritics & Planetary Science, 52 (9) 1776-1796 doi:10.1111/maps.12887 | Journal (article/letter/editorial) | | and shock-melt veins in Catherwood, Tenham, and Coorara L chondrites were studied using Raman spectroscopy...planar fractures as a chromite from the fossil meteorite Golvsten 001 and higher dislocation densities...densities than in chromite from the fossil meteorite Sextummen 003. Using this observation and knowing that the...respectively, and we conclude that the studied fossil meteorite chromites are from matrix. (Fig. 1) in Middle...Schmitz 2013) with the exception of one fossil meteorite, which was tentatively classified as winonaitelike |  | | Journal (article/letter/editorial) | | mechanisms. These high-pressure phases include ringwoodite, low-Ca majorite, clinoenstatite, hollandite-structured...transformation of olivine to polycrystalline ringwoodite appears to involve incoherent intracrystalline...lamellae, but rather lamellae of polycrystalline ringwoodite, which is inconsistent with a coherent lamellar...suggest that the time required to grow 1 μm ringwoodite crystal is ∼ 100 ms at 1600 K, suggesting that...transformation; shock metamorphism; Ca-rich majorite; ringwoodite lamellae; growth rate; Tenham 1. Introduction |  | | Journal (article/letter/editorial) | | crystallized from the melt in the SMV matrix of meteorite. P-T conditions of the formation of the SMV matrix...estimated conditions include the olivine/(olivine + ringwoodite) phase boundary and there is a possibility that...observed olivine is the result of wadsleyite/ringwoodite back-transformation during a cooling and decompression...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 |  | | Journal (article/letter/editorial) | | polymorphs in shock-induced melt veins in the meteorite and discusses their implication to the high pressure...Sixiangkou chondrite. Diopside coexists with ringwoodite (+ akimotoite) in coarse-grained fragments of...vein containing a diopside + ringwoodite fragment. Ol: olivine; Ri: ringwoodite; Di: diopside; Pyx: pyroxene;...Sample and analytical methods The Sixiangkou meteorite fell on August 15, 1989, in Sixiangkou Town of...L6 chondrite. The presence of maskelynite and ringwoodite indicated that this chondrite was heavily shocked |  | Ohtani, Eiji, Kimura, Yukiko, Kimura, Makoto, Takata, Toshiko, Kondo, Tadashi, Kubo, Tomoaki (2004) Formation of high-pressure minerals in shocked L6 chondrite Yamato 791384: constraints on shock conditions and parent body size. Earth and Planetary Science Letters, 227 (3) 505-515 doi:10.1016/j.epsl.2004.08.018 | Journal (article/letter/editorial) | | observed in Yamato 791384 L6 chondrite. Host meteorite mainly consists of olivine, pyroxenes and plagioclase...the host meteorite were partially or totally transformed into high-pressure phases; ringwoodite, majorite...temperatures around 2300 8C during the shock event. Ringwoodite lamellae were observed in the host olivine adjacent...investigation for ringwoodite lamellar growth in olivine indicates that the shocked meteorite experienced the...chondrite; high-pressure phase; phase transformation; ringwoodite lamellae; kinetics; parent body * Corresponding |  | Thomas, Sylvia-Monique, Wilson, Kathryn, Koch-Müller, Monika, Hauri, Erik H., McCammon, Catherine, Jacobsen, Steven D., Lazarz, John, Rhede, Dieter, Ren, Minghua, Blair, Neal, Lenz, Stephan (2015) Quantification of water in majoritic garnet. American Mineralogist, 100 (5) 1084-1092 doi:10.2138/am-2015-5136 | Journal (article/letter/editorial) | | 3 silicon atoms per formula unit) in the Coorara meteorite. They further defined majorite as garnet solid...its high-pressure polymorphs wadsleyite and ringwoodite, are major components of the Earth’s upper mantle...(2014), who found ~1.4 wt% H2O dissolved in a ringwoodite diamond inclusion. Evidence for regional-scale...to determine the ferric iron concentration in ringwoodite and report values that are in good agreement...the spectrum of a natural majorite found in a meteorite (Jeanloz 1980) with a strong peak at 595 cm–1 |  | | Journal (article/letter/editorial) | | 859–869, 2013 The pressures and temperatures of meteorite impact: Evidence from micro-Raman mapping of mineral...mineral phases such as olivine, wadsleyite, ringwoodite, high-Ca clinopyroxene, majorite-pyrope, jadeite...the ringwoodite, which suggests chemical fractionation during a solid-state olivine-ringwoodite transformation...revealed a close correlation between the blue ringwoodite color and the peak observed at 877 cm–1; this...absorption bands of the ringwoodite. We propose that the blue color of the ringwoodite is due to a small amount |  | | Journal (article/letter/editorial) | | shock-produced (Mg, Fe)SiO3 glass in the Suizhou meteorite Ming CHEN,1* Xiande XIE,1 and Ahmed EL GORESY2...identified in the shock veins of the Suizhou meteorite. The glass is surrounded by a thick rim of polycrystalline...fine-grained matrix composed of majorite-pyrope garnet, ringwoodite, magnesiowüstite, metal, and troilite. This study...exceeds 23 GPa. The post-shock temperature in the meteorite could have been above 477 °C. This study indicates...transformed from orthopyroxene in the Tenham meteorite. Sharp et al. (1997) found vitrified perovskite |  | | 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...OCCURRENCES OF HIGH-PRESSURE MINERALS IN METEORITES Ringwoodite, a high-pressure polymorph of olivine, is an...ion milling and ultramicrotomy. In the case of meteorite samples, the target particles for TEM observations...POLYMORPHS OF OLIVINE Natural Mg2SiO4-rich spinel, ringwoodite, was discovered in the shock vein of the Tenham |  | 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) | | were identified in Sahara 98222. Wadsleyite, ringwoodite, majorite, akimotoite, jadeite, and lingunite...original olivine. The nucleation and growth of ringwoodite occurred along the grain boundaries of original...original olivine, and as intracrystalline ringwoodite lamellae within original olivine. The nucleation and...Grossman (1999) reported that Sahara 98222 contains ringwoodite, and its shock stage was determined as S6. The...observed, and the existence of wadsleyite and ringwoodite discussed later, indicate that both Sahara 98222 |  | | Journal (article/letter/editorial) | | identification has elucidated many aspects of meteorite formation. Of particular interest are five phosphate...lonsdaleite and chaoite, new polymorphs of carbon; ringwoodite and majorite, the spinel and garnet analogs of...calcium- and aluminum-rich silicates in the Allende meteorite, a Type 1II carbonaceous chondrite which fell...(Mason, 1962), when I wrote an account of the meteorite minerals then recognized, see Table 1, the list...*Brianite Graftonite *Panethite Sarcopside *Ringwoodite *Majorite Wollastonite *Ureyite Potash feldspar |  | Collerson, Kenneth D., Williams, Quentin, Kamber, Balz S., Omori, Soichi, Arai, Hiroyoshi, Ohtani, Eiji (2010) Majoritic garnet: A new approach to pressure estimation of shock events in meteorites and the encapsulation of sub-lithospheric inclusions in diamond. Geochimica et Cosmochimica Acta, 74 (20) 5939-5957 doi:10.1016/j.gca.2010.07.005 | Journal (article/letter/editorial) | | University of Queensland, St. Lucia, Queensland 4072, Australia b Department of Earth and Planetary Sciences,...University of Queensland, St. Lucia, Queensland 4072, Australia. Tel.: +61 7 3365 8505; Fax: +61 7 3365 1277....occurrence of majorite was reported in the Coorara chondritic meteorite by Mason et al. (1968) and Smith and...Sixiangkou L6 chondrite from the presence of ringwoodite and absence of Mg perovskite (Chen et al., 1996)...Estimated pressure of shock assemblage in Sixiangkou meteorite (Chen et al., 1996; Gillet et al., 2000) #k |  | | 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...Poirier, 1983; Sharp et al., 1997). Wadsleyite and ringwoodite II - Shock-induced phase transformations and...and possible post-shock consequences Ringwoodite, the high-pressure spinel polymorph of olivine, was first...Langenhorst et al., 1995). The composition of ringwoodite is similar to the host chondritic olivine, suggesting |  | | Journal (article/letter/editorial) | | occur as a shock produced phase in a chondritic meteorite. A series of new high pressure garnets containing...discoveries of garnets in heavily shocked regions of the Coorara [5, 6] and Tenham [7, 8] chondrites. Binns and...shock pressures generated by extraterrestrial meteorite collisions. However they were unable to obtain...chemical analysis of the phase. Working on the Coorara chondrite, Smith and Mason [6] obtained an analysis...synthesize majorite of the composition observed in the meteorite. We have recently developed an improved high pressure |  | | Book | | Geochemistry/Mineralogy Xiande Xie Ming Chen Suizhou Meteorite: Mineralogy and Shock Metamorphism Springer...com/series/10171 Xiande Xie Ming Chen • Suizhou Meteorite: Mineralogy and Shock Metamorphism 123 Xiande...springer.com) Preface The Suizhou meteorite is a stone meteorite, which fell on April 15, 1986, in Dayanpo...province, China. Right after the fall of this meteorite, a group of scientists from the China University...collection of Suizhou meteorite samples. A total weight of 270 kg of this meteorite was collected. The largest |  | | Journal (article/letter/editorial) | | the clues to understand the impact events of meteorite parent bodies, but also insights on the structure...Tenham コンドライト(L6)の衝撃熔融脈(ショックベ イン)から発見され，リングウッダイト(ringwoodite)と命 名された(Binns et al., 1969)。変形スピネル構造を持つ (Mg,...Presnall, 1995). Ol, olivine; Rw, spinel phase (ringwoodite); Wd, modiˆed-spinel phase (wadsleyite); Mw,...transmission electron micrograph showing coherent ringwoodite layers stacked in olivine grain. Inset selected...patterns show (100)Ol//{111}Rw. Ol, olivine; Rw, ringwoodite. グウッダイトの間には特定の結晶方位関係はない(インコ ヒーレントな相転移)。ショックベイン中のリングウッダ |  | | Journal (article/letter/editorial) | | history of this meteorite. The transformation of olivine to ahrensite (Fe-ringwoodite) along shock vein...of previous shock pressure estimates for this meteorite (15–23 GPa). The presence of a majoritic garnet-bearing...shergottites. Rather, our findings suggest that this meteorite originated from near the martian surface at the...(augite basalt) which is defined as a martian meteorite composed of augite-rich basalt; not assigned to...(Herd et al., 2017). This was the first martian meteorite discovered to preserve igneous plagioclase, however |  | Beck, Pierre, Gillet, Philippe, Gautron, Laurent, Daniel, Isabelle, El Goresy, Ahmed (2004) A new natural high-pressure (Na,Ca)-hexaluminosilicate [(CaxNa1−x)Al3+xSi3−xO11] in shocked Martian meteorites. Earth and Planetary Science Letters, 219 (1) 1-12 doi:10.1016/s0012-821x(03)00695-2 | Journal (article/letter/editorial) | | Shergottites which de¢ne a subclass of the Martian meteorite family represent a suite of basaltic rocks very...including Martian meteorite : b L-(Mg,Fe)2 SiO4 (wadsleyite) [2] b Q-(Mg,Fe)2 SiO4 (ringwoodite) [3] b (Mg,Fe)SiO3...CAS+stishovite assemblage and hollandite in the NWA 856 meteorite Oxide Ms Hollanditea CAS+STIb CASc SiO2 TiO2...photograph of a melt pocket (MP) in the NWA 856 meteorite. The dashed line limits the zone in which partial...(Fig. 1 and Tables 1 and 2) occur throughout the meteorite. These zones have been interpreted as diaplectic |
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