 | Ward, Dustin, Bischoff, Addi, Roszjar, Julia, Berndt, Jasper, Whitehouse, Martin J. (2017) Trace element inventory of meteoritic Ca-phosphates. American Mineralogist, 102 (9) 1856-1880 doi:10.2138/am-2017-6056 | Journal (article/letter/editorial) |
| accessory Ca-phosphates (apatite-group minerals and merrillite), which are important carrier phases of the rare...systematic investigation includes 99 apatite and 149 merrillite analyses from meteorites deriving from various...mesosiderites, and 1 silicate-bearing IAB iron meteorite. Although Ca-phosphates predominantly form in...this uniformity within single samples, distinct meteorite groups do not necessarily have unique REE-patterns...the winonaite and the ureilitic trachyandesite, merrillite from ordinary chondrites); (2) unfractionated |
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| Indigenous H in GRA 06128, as recorded in magmatic merrillite, is characterised by an average ï€D of ca. 152...Moon and the angrite and eucrite meteorite parent bodies. The merrillite data thus suggest that early accretion...asteroid belt. Apatite formed at the expense of merrillite around 100 million years after the differentiation...H2O, which is similar to the H2O abundance in merrillite from which apatite formed. The apatite ï€D values...parent-body by an ice-rich impactor. Keywords Apatite; Merrillite; Asteroids; H isotopes; Cl isotopes; Secondary |
 | RosĂ©n, Ă
ke V., Pape, Jonas, Hofmann, Beda A., Gnos, Edwin, Guillong, Marcel (2019) Quenched primary melt in Ramlat as Sahmah 517 â Snapshot of ureilite anatexis in the early solar system. Geochimica et Cosmochimica Acta, 246. 1-20 doi:10.1016/j.gca.2018.11.016 | Journal (article/letter/editorial) |
| is of special interest in this context. This meteorite lacks shock features in its primary silicates...trachyandesite in Almahata Sitta but RaS 517 lacks phosphates which are abundant in the Almahata Sitta trachyandesite...ferroan ureilites and lithologies similar to the Almahata Sitta trachyandesite and further suggest that these...ureilite, retrieved in 2015 through the Omani-Swiss Meteorite Search Project (Meteoritical Society Database...2015) and the reported bulk composition of the Almahata Sitta trachyandesite (BischoïŹ et al., 2014). This |
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| explanation for the observed excess slopes of meteorite LuâHf isochrons (e.g., Bizzarro et al., 2003;...system has been constrained by direct analysis of meteorite zircons (Iizuka et al., 2015), but the uncertainty...to construct an internal LuâHf isochron. This meteorite has been well characterized, with an accurate...cases (Watson and Cherniak, 2013). Richardton meteorite is an H5 type that has been well characterized...made between the different phosphates (apatite, merrillite) or pyroxenes (low-Ca or high-Ca). The mineral |
 | Bast, Rebecca, Scherer, Erik E., Sprung, Peter, Mezger, Klaus, Fischer-Gödde, Mario, Taetz, Stephan, Böhnke, Mischa, Schmid-Beurmann, Hinrich, MĂŒnker, Carsten, Kleine, Thorsten, Srinivasan, Gopalan (2017) Reconciliation of the excess 176Hf conundrum in meteorites: Recent disturbances of the Lu-Hf and Sm-Nd isotope systematics. Geochimica et Cosmochimica Acta, 212. 303-323 doi:10.1016/j.gca.2017.05.043 | Journal (article/letter/editorial) |
| scatter away from isochron regressions for both meteorite classes, with low-Hf phases such as plagioclase...explain the excess 176Hf. Instead, disturbed meteorite isochrons are more likely caused by terrestrial...Hf behind. Robust Lu-Hf (and improved Sm-Nd) meteorite geochronology will require the development of...undisturbed internal isochron for the Almahata Sitta meteorite (Bast et al., 2017). Several studies have...whereas others are far too high, even for the same meteorite. This suggests that the not the cause of the spurious |
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| Investigation of the Metallic Phases in the Almahata Sitta Meteorite (Fragment #051) Y. A. Abdu, A. M. Gismelseed...Compositions in Stardust SiC Grains from the Murchison Meteorite J. N. Avila, T. R. Ireland, M. Lugaro, F. Gyngard...6497 Mineralogy and Petrology of the Murrili Meteorite G. K. Benedix, L. V. Forman, L. Daly, R. C. Greenwood........................................ 6203 Almahata Sitta News: Well-Known Varieties and New Species......... 6462 Fall and Recovery of the Murrili Meteorite, and an Update on the Desert Fireball Network |
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| Compositions in Stardust SiC Grains from the Murchison Meteorite [#6318] We report the results of Gd and Dy isotopic...Pre-Entry Size and Cosmic History of the Annama Meteorite [#6316] Annama is not part of the prominent â7-8...Noble Gas and Cosmogenic Records of Komar Gaon Meteorite, the Latest Fall in India [#6071] Komar Gaon is...Strangway. D. Mineralogy and Petrology of the Murrili Meteorite [#6237] We report on the classification, mineralogy...Silicate Stardust from Supernovae in the QUE 99177 Meteorite [#6054] Our work on QUE 99177 is an extension |
 | | Book |
| METEORITE MINERALOGY Meteorites are fascinating cosmic visitors. Using accessible language, this book...book documents the history of mineralogy and meteorite research, summarizes the mineralogical characteristics...photographs of meteorite minerals, and with an accompanying online list of meteorite minerals, this book...book provides a useful resource for meteorite researchers, terrestrial mineralogists, cosmochemists,...students in these ïŹelds. a l a n e . r u b i n is a meteorite researcher who recently retired from the University |
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| MOÌSSBAUER SPECTROSCOPY OF OLIVINES FROM THE DâORBIGNY METEORITE Y. A. Abdu1, M. E. Varela2 and F. C. Hawthorne1...(d13C approximately 0 to +5&) lining vugs in the meteorite. There are also diïŹerences in magmatic carbon...of the Meteoritical Society: Abstracts 5022 METEORITE IMPACT CRATERS IN SOUTH AMERICA: A BRIEF REVIEW...discoveries. The following possible and conïŹrmed meteorite impact structures have been reported for this...iron-nickel Apollo-type asteroid (meteorite type IA) and plenty of meteorite specimens survived the impact |
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| crater center from a terrace deposit of the Enmyvaam River outside the crater rim. The spherules are translucent...isotopic variability in troilite within a same meteorite, our data are consistent with literature results:...from three new lithologies in the Tagish Lake meteorite [5] that have experienced less but varied degrees...()200â400&), with large scatter within a single meteorite [5]. To avoid potential contamination by D-rich...Chinese contemporary limestones [3] show that the meteorite ïŹux was enhanced by two orders of magnitude following |
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| Science Tunis, Tunisia, 4 Meteorite Laboratory Lehmweg Gifhorn, Germany, 5 Meteorite Recon MĂŒhlendamm Hamburg...calculation of meteorite flux is possible [4]. Following previous estimation of meteorite flux based on...structures in the alluvial fan, or the result of a meteorite shower. Their age, whatever the event is, is very...ANALYSIS (INAA) FOR ELEMENTAL COMPOSITION OF FRESH METEORITE FALL IN ORISSA, INDIA (2003). B. Adur, H.B. Mali...there were rains of the meteorite shower. Results: - A sample of the meteorite which fell in Purva Suniti |
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| enrichments in Si (~5 wt.%), suggesting that this meteorite has undergone similar pathways of aqueous alteration...Penn State and ARES-JSC. Meteorite kindly provided by the JSC Antarctic meteorite curators. 5312.pdf 75th...chondrites (weathering type C), GRO 03116. This meteorite is compared to other members of the CR group....Penn State and ARES-JSC. Meteorite kindly provided by the JSC Antarctic meteorite curatorial facility. ...and overall comminution and deformation of the meteorite. Subsequent aqueous alteration gave rise to the |
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| FIB sections retrieved from the matrix of each meteorite using a Talos F200X. All observations were conducted... [14] Schrader & Davidson (submitted) GCA. METEORITE MATERIAL MODEL FOR STRUCTURAL PROPERTIES Parul...needed to achieve this objective. At present, the meteorite material found on earth are the only objects from...properties for the entire family of asteroids, meteorite unit models are developed to determine the effective...turn deduce the properties of asteroids. The meteorite unit is a representative volume that accounts |
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| INVESTIGATION OF THE METALLIC PHASES IN THE ALMAHATA SITTA METEORITE (FRAGMENT#051). Y. A. Abdu1, A. M. Gismelseed2... University of Khartoum, Sudan. Introduction: The Almahata Sitta meteorite fall was unique because asteroid...asteroid 2008 TC3, the parent body of the Almahata Sitta meteorites, was the first asteroid to be detected...in Sudan in 2008 [1]. In a previous work, we studied the whole-rock sample of the Almahata Sitta fragment...better characterize the metallic phases in the Almahata Sitta fragment#051. References: [1] Jenniskens P |
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| CARBONACEOUS-CHONDRITE INCLUSIONS FROM THE KAPOETA METEORITE: EVIDENCE FOR THE EXISTENCE OF NANODIAMONDS WITH...Waterloo, ON, Canada. Kapoeta is an achondrite meteorite that belongs to the howardite group, which along...nanodiamonds in CC material from the Kapoeta meteorite by Fourier-transform infrared (FTIR) and Raman...nanodiamonds and amorphous carbon found in this meteorite. References: [1] Zolensky M. E. et al. 1996. Meteoritics...State. Samples provided by the JSCâs Antarctic meteorite curatorial facility. 5214.pdf 76th Annual Meteoritical |
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| University, Sapporo, 001-0021, Japan, 3Antarctic Meteorite Research Center, National Institute of Polar Research...to one of the most primitive meteorites. This meteorite contains highly abundance of presolar grains [1]...anticipated [6]. [6] observed that Fe,Ni metal in this meteorite was invariably and extensively altered to form...increasing metamorphism, reaching ~12,000â° in one meteorite. This enrichment is almost 4 times that in the...which can drive the knocked out fragments to meteorite orbits in about 1 million years [4]. The drift |
