 | IVANOVA, Marina A., KONONKOVA, Natalia N., KROT, Alexander N., GREENWOOD, Richard C., FRANCHI, Ian A., VERCHOVSKY, Alexander B., TRIELOFF, Mario, KOROCHANTSEVA, Ekaterina V., BRANDSTĆTTER, Franz (2008) The Isheyevo meteorite: Mineralogy, petrology, bulk chemistry, oxygen, nitrogen, carbon isotopic compositions, and40Ar-39Ar ages. Meteoritics & Planetary Science, 43 (5) 915-940 doi:10.1111/j.1945-5100.2008.tb01090.x | Journal (article/letter/editorial) | | available online at http://meteoritics.org The Isheyevo meteorite: Mineralogy, petrology, bulk chemistry, oxygen...Geochemistry and Analytical Chemistry, Moscow 119991, Russia of Ocean, Earth Science and Technology, Hawaiāi...revision accepted 30 September 2007) AbstractāIsheyevo is a metal-rich carbonaceous chondrite that contains...CBb chondrites, ~20% of Fe,Ni-metal grains in Isheyevo are chemically zoned. Similarly to CH chondrites...melilite-rich types; AOAs are very rare. We infer that Isheyevo is a complex mixture of materials formed by different |  | | Journal (article/letter/editorial) | | (CAIs) from the metal-rich carbonaceous chondrites Isheyevo (CH/CB-like), Acfer 214 paired with Acfer 182...and a signiļ¬cant fraction of those from CHs and Isheyevo are 16O-depleted. Most of the 16O-depleted CAIs...(cryptocrystalline and skeletal) chondrules in CHs, CBs, and Isheyevo either by an unspeciļ¬ed, late, single-stage, highlyenergetic...(ii) In addition to these components, the CHs and Isheyevo contain a high abundance of chondrules and refractory...forsterite, and hibonite 16O-enriched and melilite and anorthite 16 O-depleted (e.g., Clayton, 1993; Itoh et al |  | Bonal, L., Huss, G.R., Krot, A.N., Nagashima, K., Ishii, H.A., Bradley, J.P. (2010) Highly 15N-enriched chondritic clasts in the CB/CH-like meteorite Isheyevo. Geochimica et Cosmochimica Acta, 74 (22) 6590-6609 doi:10.1016/j.gca.2010.08.017 | Journal (article/letter/editorial) | | 15N-enriched chondritic clasts in the CB/CH-like meteorite Isheyevo L. Bonal a,ā, G.R. Huss a, A.N. Krot a, K...incorporated at a late stage into the ļ¬nal parent body of Isheyevo. Their origin is poorly constrained. Based on...previously identiļ¬ed in the CB/CH-like chondrite Isheyevo. Here, we focus on the rare lithic clasts characterized...refractory inclusions related to those in the Isheyevo host, suggesting accretion in the same region...their incorporation in the ļ¬nal parent body of Isheyevo. They experienced an extensive aqueous alteration |  | | Journal (article/letter/editorial) | | CaO = 0.10.8, Cr2O3 = 0.040.48; MnO <0.5), anorthite, Al-diopside 10 (in wt%, Al2O3 = 0.78.1; TiO2...Al2O3 up to 13 19.6; TiO2 up to 13.9), and anorthite. The CH AOAs, including CAIs within AOAs, have...3)u105, (1.7Ā±0.2)u105, and (3.0Ā±2.6)u106. 20 Anorthite in another AOA shows no resolvable G26Mg excess;...in the solar nebula during Al/27Al ratios in anorthite of the mi- 30 in the protoplanetary disk during...closed-system Mg- 31 isotope exchange between anorthite and Mg-rich minerals (spinel, forsterite, and |  | | Journal (article/letter/editorial) | | inclusions in the CH/CB-like carbonaceous chondrite Isheyevo: I. Mineralogy and petrography Alexander N. KROT1*...Lomonosov Moscow State University, Moscow 119992, Russia 3Vernadsky Institute of Geochemistry and Analytical...Analytical Chemistry, Kosygin Street 19, Moscow 119991, Russia *Corresponding author. E-mail: sasha@higp.hawaii...April 2008) AbstractāThe CH/CB-like chondrite Isheyevo consists of metal-rich (70ā90 vol% Fe,Ni-metal)...abundances between the lithologies. About 55% of the Isheyevo CAIs are very refractory (hibonite-rich and grossite-rich) |  | | Journal (article/letter/editorial) | | Chondritic lithic clasts in the CB/CH-like meteorite Isheyevo: Fragments of previously unsampled parent...February 2010 Abstract The CB/CH-like chondrite Isheyevo is characterized by the absence of ļ¬ne-grained...to the pristine high-temperature components of Isheyevo, these clasts experienced extensive aqueous alteration...high-temperature components or were added later to the ļ¬nal Isheyevo parent body during regolith gardening. In order...origin and secondary alteration of the clasts in Isheyevo, we studied their mineralogy, petrography, structural |  | | Journal (article/letter/editorial) | | Chondrules in the CB/CH-like carbonaceous chondrite Isheyevo: Evidence for various chondrule-forming mechanisms...recently discovered metal-rich carbonaceous chondrite Isheyevo consists of Fe, Ni-metal grains, chondrules, heavily...chondrules in other chondrite groups, those in Isheyevo show little evidence for multiple melting events;...low-Ca and high-Ca pyroxene, and interstitial anorthite-rich mesostasis. Since chondrules with such characteristics...for the CH and CB chondrites. We conclude that Isheyevo and probably other CH chondrites contain chondrules |  | | Journal (article/letter/editorial) | | 13 CH metal-rich carbonaceous chondrites and Isheyevo (CH/CB). These include (i) relict 14 polymineralic...isotopically 68 heterogeneous: melilite and anorthite are systematically 16O-depleted relative to spinel...(high metal) 83 groups, and the CH/CB chondrite Isheyevo. These meteorites share bulk chemical (enrichment...characteristics of 88 CAIs and chondrules in CBs, CHs, and Isheyevo. 89 In contrast to typical CAIs in non-metal-rich... 91 Ā±Ć„kermanitic melilite, and forsterite; anorthite is generally absent (Krot et al., 2001, 2012b |  | | Journal (article/letter/editorial) | | compositions of chondrules from the metal-rich chondrites Isheyevo (CH/CBb), MAC 02675 (CBb) and QUE 94627 (CBb)...(1) CH chondrites and the CBb/CH-like chondrite Isheyevo contain two populations of chondrules formed by...the solar nebula. (2) Porphyritic chondrules in Isheyevo and CH chondrites are diļ¬erent from porphyritic...and ferroan cryptocrystalline) chondrules from Isheyevo and CBb chondrites MAC 02675 and QUE 94627, paired...19 magnesian cryptocrystalline chondrules from Isheyevo, 24 magnesian cryptocrystalline chondrules and |  | | Journal (article/letter/editorial) | | Academy of Sciences, ul. Kosygina 19, Moscow, 119991 Russia e-mail: meteorite2000@mail.ru Received May 27,...Carbonaceous chondrites, the most primi- tive of all meteorite types, have solar-like compositions, and contain...aggregates (AOAs) composed of olivine, Al-diopside, anorthite, and spinel, and 3) chondrules that are ferromagnesian...of which include the unique Efremovka meteorite in the Meteorite Collection of the Russian Academy of...melilite inclusions, melilite is replaced by anorthite and Ca-pyroxene, which are the primary phases |  | Krot, Alexander N., Nagashima, Kazuhide, Simon, Steven B., Ma, Chi, Connolly, Harold C., Huss, Gary R., Davis, Andrew M., Bizzarro, Martin (2019) Mineralogy, petrography, and oxygen and aluminum-magnesium isotope systematics of grossite-bearing refractory inclusions. Geochemistry, 79 (4) 125529 doi:10.1016/j.chemer.2019.08.001 | Journal (article/letter/editorial) | | of isotopically heterogeneous with melilite, anorthite, perovskite, Zr- and Sc-rich oxides and silicates...chondrites, including Acfer 182/214, NWA 739 (CH), Isheyevo (CH/CB), Hammadah al Hamra 237 (HH 237, CB), and...krotite, spinel, and perovskite), and Miyake-jima anorthite (for plagioclase). Magnesium isotopic compositions...of spinel+hibonite, gehlenitic melilite (Ć
k5), anorthite, and Al-diopside (Fig. 1e). Kƶƶp et al. (2018)...fragment is surrounded by layers of ā4ā spinel and anorthite (see Fig. 5 in Kƶƶp et al., 2018). Grossite, the |  | Gounelle, Matthieu, Young, Edward D., Shahar, Anat, Tonui, Eric, Kearsley, Anton (2007) Magnesium isotopic constraints on the origin of CBb chondrites. Earth and Planetary Science Letters, 256 (3) 521-533 doi:10.1016/j.epsl.2007.02.007 | Journal (article/letter/editorial) | | zoned metal grains [10]. The discovery of the Isheyevo meteorite that contains both CH-like and CBb-like lithologies...spinel (sp) with rare fassaite and extremely rare anorthite. (b) Close-up of HH237-CAI0 showing the relationship...(QUE94411, 5) allocated to us by the Antarctic Meteorite Working Group (MWG). Scanning electron microscopy...diversity of phases in CAIs from HH237 and QUE94411 Meteorite Object Na2O MgO Al2O3 SiO2 P2O5 SO2 K2O CaO...02 0.11 0.09 bd bd bd 0.38 0.19 0.53 Spinel Anorthite Fassaite Melilite Fassaite Pyroxene Pyroxene Melilite |  | | Journal (article/letter/editorial) | | transformation to low pressure polymorphs throughout the meteorite. The high pressure phases record a high temperatureāpressure...discovery of coesite and grossular-pyrope in a meteorite, although it was preliminarily reported by Kimura...shock and ā or back transformation throughout the meteorite. Heterogeneous shock pressure and temperature...generally occurs in association with nepheline, anorthite and sodalite and may be a replacement product...product of melilite, Ca-pyroxene and ā or anorthite. It is ubiquitous as veins in type B inclusions in Allende |  | Chi, Miaofang, Ishii, Hope A., Simon, Steven B., Bradley, John P., Dai, Zurong, Joswiak, David, Browning, Nigel D., Matrajt, Graciela (2009) The origin of refractory minerals in comet 81P/Wild 2. Geochimica et Cosmochimica Acta, 73 (23) 7150-7161 doi:10.1016/j.gca.2009.08.033 | Journal (article/letter/editorial) | | (Ca,Mg,Al)2 (Si,Al)2O6), spinel (MgAl2O4) and anorthite (CaAl2Si2O8), with osbornite (Ti(V)N) occurring...found in refractory inclusions in the Allende meteorite. We also closely studied the Inti osbornite for...crystal in a Type B2 CAI, TS65, from the Allende meteorite using the Cameca SX50 at the University of Chicago...gehlenitic melilite, perovskite, diopside, spinel, anorthite and osbornite (nominally TiN). The chemistries...prepared from a Type B2 CAI (TS65) from the Allende meteorite. These spectra were acquired under the same microscopy |  | | Journal (article/letter/editorial) | | outward: spinel + hibonite + perovskite ā melilite ā anorthite replacing melilite ā Al-diopside ā forsterite)...One of the 16O-rich CAIs is surrounded by an anorthite-Al-diopside WL rim showing a range of ā17O values...including spinel, hibonite, perovskite, melilite, anorthite, Al,Ti-diopside, 64 and forsterite. The rim...diffraction (EBSD) 80 and FIB+TEM study of anorthite and Al,Ti-diopside layers of WL rims around melilite-rich...(Vigarano type) CAIs and their WL rims, with 83 anorthite, melilite and perovskite often being 84 diopside |  | KROT, A. N., MAKIDE, K., NAGASHIMA, K., HUSS, G. R., OGLIORE, R. C., CIESLA, F. J., YANG, L., HELLEBRAND, E., GAIDOS, E. (2012) Heterogeneous distribution of26Al at the birth of the solar system: Evidence from refractory grains and inclusions. Meteoritics & Planetary Science, 47 (12) 1948-1979 doi:10.1111/maps.12008 | Journal (article/letter/editorial) | | 2005). Among the CAI minerals, melilite and anorthite on one side and hibonite and Al,Ti-diopside on...similar 16O-rich compositions in the same primitive meteorite precludes late-stage, i.e., after decay of 26Al...Because all corundumbearing CAIs are found in meteorite ļ¬nds or aqueously altered CM chondrites, some...CAI, G92, melilite is extensively replaced by anorthite; both minerals are similarly 16O-rich (D17O ...for being melted, suggesting formation of the anorthite by a gas-solid reaction between the 16O-rich melilite |  | | Journal (article/letter/editorial) | | whereas matrix has high Si and low Mg. The bulk meteorite has a CI chondritic Mg/Si ratio (Klerner and Palme...including 1 vol.% CAIs and 3 vol.% metal in the meteorite, however, this has a negligible effect on the... Olivine Pyroxene Anorthite 3.27 3.20 2.67 40 20 40 Olivine Pyroxene Anorthite 3.27 3.20 2.67 3.00...ļ¬elds of the ternary phase diagram forsteriteāanorthiteāSiO2. The evaporative loss of Si will shift the...% forsterite, 30 vol.% enstatite and 32 vol.% anorthite has a CI chondritic Mg/Si ratio. After evaporating |  | | Journal (article/letter/editorial) | | often appears to be mineralogically controlled: anorthite, melilite, grossite, krotite, perovskite, and...coarse-grained igneous CV CAIs, O-isotope heterogeneity of anorthite, melilite, and igneously zoned Al,Ti-diopside...similar; they consist mainly of spinel-pyroxene-anorthite CAIs and forsterite grains; Fe,Ni-metal and low-Ca...carbonaceous chondrites 10ā72), Al,Ti-pyroxene, anorthite, and of melilite (Ak spinel, and plot in the liquidus...mainly of anorthite, Al,Ti-pyroxene, melilite, and spinel, and plot in the liquidus field of anorthite). Type |  | NAKASHIMA, Daisuke, USHIKUBO, Takayuki, GOWDA, Rudraswami N., KITA, Noriko T., VALLEY, John W., NAGAO, Keisuke (2011) Ion microprobe analyses of oxygen three-isotope ratios of chondrules from the Sayh al Uhaymir 290 CH chondrite using a multiple-hole disk. Meteoritics & Planetary Science, 46 (6) 857-874 doi:10.1111/j.1945-5100.2011.01198.x | Journal (article/letter/editorial) | | chondrules were extracted previously from the bulk meteorite sample. A fraction of the extracted chondrules...2002). In conjunction with the discovery of the Isheyevo CH ā CB chondrite that contains two lithologiesāmetal-rich...composition of Ch01 is slightly shifted toward anorthite from stoichiometric low-Ca pyroxene (Fig. 9),... indicating a small contribution of anorthite component (13% on average). Low-Ca pyroxene occurs as fan-like...stoichiometric olivine, low-Ca pyroxene, feldspar (anorthite, albite, and orthoclase), and silica. Fig. 8 |  | | Journal (article/letter/editorial) | | due to the presence of pyroxene. Some of these meteorite types have spectra that are quite similar, but... USA 5098 THE REGOLITH PORTION OF THE LUNAR METEORITE SAYH AL UHAYMIR 169 A. Al-Kathiri1, 2, E. Gnos1...further removes the need for complex scenarios of meteorite extraction, thereby potentially improving the...additionally contains a highland gabbronorite clast with anorthite (An96ā97), forsteritic (Fo85), and fayalitic (Fo12)...compositions within the EC vary with type of host meteorite [6]. Results and Discussion: We studied a sample |  | Kƶƶp, Levke, Davis, Andrew M., Nakashima, Daisuke, Park, Changkun, Krot, Alexander N., Nagashima, Kazuhide, Tenner, Travis J., Heck, Philipp R., Kita, Noriko T. (2016) A link between oxygen, calcium and titanium isotopes in 26Al-poor hibonite-rich CAIs from Murchison and implications for the heterogeneity of dust reservoirs in the solar nebula. Geochimica et Cosmochimica Acta, 189. 70-95 doi:10.1016/j.gca.2016.05.014 | Journal (article/letter/editorial) | | compositions have been measured in melilite and anorthite in the same CV CAIs, these values are interpreted...a 92 g piece of the Murchison meteorite from the Field Museum meteorite collection (FMNH ME 2644). This...magnesium and iron, corundum for aluminum, and anorthite for calcium. We observed negative magnesium contents...correction inaccuracy of ~1ā°. Therefore, we used an anorthite glass standard with MgO contents that were comparable...higher Mg+ secondary ion intensity. We also used anorthite to correct for instrumental mass fractionation |  | Makide, Kentaro, Nagashima, Kazuhide, Krot, Alexander N., Huss, Gary R., Hutcheon, Ian D., Hellebrand, Eric, Petaev, Michail I. (2013) Heterogeneous distribution of 26Al at the birth of the Solar System: Evidence from corundum-bearing refractory inclusions in carbonaceous chondrites. Geochimica et Cosmochimica Acta, 110. 190-215 doi:10.1016/j.gca.2013.01.028 | Journal (article/letter/editorial) | | software. Although, in addition to corundum, anorthite and refractory forsterite also exhibit CL, the... and corundum grains measured in this study. Meteorite CAI# Mineralogy Adelaide Adelaide Murchison...grossite-rich CAIs from the CH carbonaceous chondrite Isheyevo (Krot et al., 2008; Gounelle et al., 2009), and...Geochimica et Cosmochimica Acta 110 (2013) 190ā215 Isheyevo meteorite: implication for oxygen isotope composition...Type A Caā Al-rich inclusion from the Vigarano meteorite. Meteorit. Planet. Sci. Kawasaki N., Sakamoto |  | | Journal (article/letter/editorial) | | 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 ~12,000ā° in one meteorite. This enrichment is almost 4 times that in the...Geochemistry and Analytical Chemistry, RAS, Moscow 119991 Russia, E-mail: aval37@chgnet.ru. Introduction: The reflection |  | | Journal (article/letter/editorial) | | composed of olivine, high-Ca pyroxene (augite) and anorthite. A vesicular SiO2 glass, presumed to be melted...N-enriched chondritic clasts in the CB/CH-like isheyevo meteorite. 40th Lunar Planet. Sci. Conf. CD-ROM. #2046...residue from the Orgueil carbonaceous chondrite meteorite. Meteorit. Planet. Sci. 41, 633ā642. Geiss J....organic matter as inferred from the Tagish Lake meteorite. Science 332, 1304ā1307. HoĢrz F., Bastien R....E. (2006) Organic globules in the Tagish Lake meteorite: remnants of the protosolar disk. Science 314 |  | | Journal (article/letter/editorial) | | enveloping compound chondrule from the Allende meteorite. Sample Description: The enveloping compound chondrule...and plagioclase (An85ā95). Al/Mg ratios in the anorthite ranged from 100 to 140 in both chondrules. Based...graphite grains extracted from the Murchison meteorite have a range of density (1.6ā2.2 g/cm3) [1]. Low-density...separates (2.02ā2.12 g/cm3) from the Orgueil meteorite [5]. Grains from KFB1 show two distinct populations:...heating procedure for two samples of the IIIB iron meteorite Grant (split BE-50) was performed to determine |
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