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| com/locate/gca Regolith history of the aubritic meteorite parent body revealed by neutron capture effects...dark (shocked) grains and in matrix materials of Pesyanoe, in three different fragments from Pena Blanca...parent body. The results from phases components of Pesyanoe confirm earlier reported evidence for regolith...aubrites. The inferred neutron fluences for six Pesyanoe separates vary between (2.13 and 2.82) · 1016...These observations confirm that the brecciated Pesyanoe meteorite, which contains solar wind (SW) gases only |
 | Lorenzetti, S., Eugster, O., Busemann, H., Marti, K., Burbine, T.H., McCoy, T. (2003) History and origin of aubrites. Geochimica et Cosmochimica Acta, 67 (3) 557-571 doi:10.1016/s0016-7037(02)01085-2 | Journal (article/letter/editorial) |
| age of Norton County, the first measured stony meteorite (Begemann et al., 1957), yields the longest currently...currently known exposure time of a stone meteorite. Gaffey et al. (1992) suggested a link between aubrites...for a planetesimal impact in the Shallowater meteorite also are indicative of regolith processes. Thermal...differentiates. They also noted that the enstatite meteorite Happy Canyon (EL6) shows compositional similarities...inferred from the study of the Norton County meteorite (Okada et al., 1988), while evidence for an impact |
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| components in clasts and separates of the Abee meteorite J o h n F. W a c k e r 1 and Kurt Marti 2 I Department...or three K-bearing minerals. The major phase, plagioclase [6], released most of the radiogenic 4°Ar at...900-1000°C, "low-temperature" cartier may be plagioclase since the lower-temperature 129Xe release vaguely...component and the release of radiogenic 4°Ar. Plagioclase, the main potassium-beating mineral in Abee [6]...solar-type gas reservoir such as observed in the Pesyanoe meteorite [35]. The data for the terrestrial planets |
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| Solar wind and other gases in the regoliths of the Pesyanoe parent object and the moon K. J. MATHEW* and K...accepted 27 November 2002) We report new data from Pesyanoe-90,1 (dark lithology) on the isotopic signature...The low temperature (≤800°C) steps define the Pesyanoe-S xenon component, which is isotopically consistent...is <1.5‰ per amu. We also observe fractionated (Pesyanoe-F) Xe and Ar components in higher temperature...the Pesyanoe-F Xe component is revealed only at the highest temperatures (>1200°C). The Pesyanoe-F gas |
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| and the presencteof sinoite indicate that the meteorite was formed under strongly reducing conditions...conditions. However, among the various stone meteorite classes are two which were formed in an even higher...the meteorite aa a veined crystalline chondrite: htwwver. Xf,4sow (I!~i-li listed the meteorite properly...st.andards to determinr thcl graphite in t,he meteorite. The quantitative data. were corrected for wavelength...enstatite is the most abundant mineral of the meteorite and makes up about 50-60 weight per cent of it |
 | Borg, J., Comstock, G.M., Langevin, Y., Maurette, M., Jouffrey, B., Jouret, C. (1976) A Monte Carlo model for the exposure history of lunar dust grains in the ancient solar wind. Earth and Planetary Science Letters, 29 (1) 161-174 doi:10.1016/0012-821x(76)90036-4 | Journal (article/letter/editorial) |
| code, such as the mass spectrum of the ancient meteorite flux; the accumulation rate of the regolith. Va...functions in the SOLMIX code depend on both the meteorite mass spectrum, de/din, at the Moon and the geometrical...profile of the impact crater formed by a given meteorite. To evaluate de/din for m < 1 g, we have used...parameters. Any real crater profile due to a meteorite with a radius, Rm, can be inferred from this family...Fig. 1. Integrated mass distribution, ~, of the meteorite flux and cumulative mass, ~m, in each mass interval |
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| has been described from the brecciated aubrite Pesyanoe (DuFresne and Anders, 1962b), and aragonite is...MnO 1200 and FeO 1500. 3. Results The Orgueil meteorite is a regolith breccia (Boström and Frederiksson...relative to the hundreds used in previous studies of meteorite fabrics (Watt et al., 2006), this result must...heavily altered than other constituents of the meteorite. However, this inference is inconsistent with...that they were produced after the fall of the meteorite and synchronously with crystallization of Mg- |
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| tektites, photographs, a: 864-855 Ablation rate iron meteorite “Thule”, 25: 98 Absolute abundance of the chromium...Bruderheim meteorite, 26: 6132 aubrite, Bishopville, 29: 1085-1099 cosmic-ray, Bruderheim meteorite, 26: 662...Also, Bogou, other meteorites, 29: 1327 Alabama meteorite, Felix, carbonaceous chondrite, 24: 70-82 pelecypod... cobalt in, 22: 28 Alabandite, in Abeo stony meteorite, X-ray diffraction pattern, 21: 133 in enstatite...meteorites, 29: 1143 ferrmagnesian, in Norton Co. meteorite, 27: 941, 943, 944 Alanine in clam shells, 21: |
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| 20Nel22Ne ratio of about 11.2 that had been found in plagioclase and pyroxene. In addition, heavy SEPHe and SEP-Ar...type" Xe from low-temperature steps of the Pesyanoe meteorite (Kim and Marti, 1992). 576 R. Wieler and...temperature steps of the pyrolysis/combustion run of the Pesyanoe achondrite (Fig. 8), a component that these authors...conclusion in their etch study of the gas-rich meteorite Acfer Ill. We discussed earlier (Benkert et aI...whose antiquity, like that of any other gas rich meteorite, is largely unconstrained. Besides these etch |
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| preserved on heat-treating or forging of specific meteorite specimens, so in most cases recognition of altered...ablation and corrosion crust is different when the meteorite has been reheated by man (Rasgata specimens of...meteorites (Bacubirito). Preservation on an iron meteorite of the ...heating is the best guarantee that the meteorite was never maltreated. On an older iron the corrosion products...iron-free enstatite, diopside and forsterite with plagioclase of variable composition (An 12 - 49%). Netschaevo |
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| I. V. Holin. Space Research Institute, Moscow, Russia. E-mail: holin@mail.cnt.ru Introduction: The southern...region. As part of an ongoing project to discover meteorite impact sites, this area was investigated through...tend to have the same REE pattern within a given meteorite. REEs are homogeneous in a given grain but vary...Pathfinder rock). Using the molecular normative plagioclase composition versus color index classification...dusts produced the first mineral assemblages of plagioclase plus Mg, Fe-olivine and pyroxene and others depending |
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| therefore also allow to re-evaluate the lunar and meteorite data, which is done here. In particular, claims...composition and flux, based on lunar samples and some meteorite data. magnitude references comments 3 He/4...limit of 20% for last 1–2 Ga. c: Antiquity of meteorite samples (Heber et al., 2001) unconstrained. potential...gas and nitrogen data obtained from lunar and meteorite data largely in the light of the Genesis data...4.1–6.1 1620–2940 meteoritic Fe-Ni Acfer 111 meteorite 650 ± 60 570–610 47 ± 3 41–42 2840 sun 807 |
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| range and mean of Mn content in individual stone meteorite classes, refer also to [46]. Gmelin Handbock Mn...average weighted Mn content in individual stone meteorite classes (accompanied by a discussion of the results...mean Mn content for the individual parts of a meteorite is given as 300 ppm for the pure meta! (nickel-iron)...from the Aidyrlinskii ore field, Southern Urats, Russia [7]. Tabular dark gray grains with a metallic Luster...from Pt-bearing serpentinites of the Far East, Russia, turned out to be Cr-Ni-Mn-containing a-Fe, (Fe |
 | | Book |
| resulted, their recovery, and the history of meteorite studies since the time when it was established...1.1. Thunderstones and the Origins of Modern Meteorite Research 1.2. The Early Nineteenth Century 1.3...Minerals Meteorite Falls and Associated Phenomena 2.1 Introduction 2.2. Non-Crater-Forming Meteorite Falls...Falls 2.2.1. The Phenomena of Meteorite Falls 2.2.2. The Scatter Ellipse 2.2.3. Morphology and the Fusion...2.2.4. Meteorite Recovery 2.2.5. Terrestrial Ages of Meteorite Finds 2.3. Explosive Meteorite Craters |
 | | Book |
| provide an introduction to meteorite science and a handbook on meteorite classification. Insofar as I...These chapters would have been useful chiefly to meteorite researchers looking for a quick summary of group...quantitative meteorite studies declined during 1970-1973 as a result of the diversion of meteorite researchers'...efforts to the study of lunar samples. The rate of meteorite research activity is now increasing as researchers...during the past decade regarding problems of meteorite origin and classification. A complete list would |
 | | Book |
| provide an introduction to meteorite science and a handbook on meteorite classification. Insofar as I...These chapters would have been useful chiefly to meteorite researchers looking for a quick summary of group...quantitative meteorite studies declined during 1970-1973 as a result of the diversion of meteorite researchers'...efforts to the study of lunar samples. The rate of meteorite research activity is now increasing as researchers...during the past decade regarding problems of meteorite origin and classification. A complete list would |
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| . . . . . . . 55 3.1.3 The Knyahinya Meteorite – a Benchmark for Cosmogenic Nuclide Systematics...Jürgen Nauber is a constant source of interesting meteorite samples for research and also generously lends...hot desert, in the framework of the Omani-Swiss meteorite search programme. With Editors Tim Jull, Frank...those implanted by the solar wind in lunar and meteorite samples and artificial targets exposed by the...and 1930s, Victor Moritz Goldschmidt used stony meteorite data to tabulate “cosmic” abundances of the elements |
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| low glass penetration. We have analyzed three plagioclase fractions by the 39Ar-4oAr-method: coarse plag...689-690. SOME OBSERVATIONS ON THE MECHANISM OF METEORITE CONCENTRATION IN VICTORIA LAND. ANTARCTICA John...appeared to meet the established criteria for meteorite concentration. Since this field exhibited a step-like...ablation might not be of primary importance in meteorite accumulation. It is suggested that the Allan Hills...Hills region is an important area of meteorite concentration because it is suitably placed relative to |
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| Geochemistry and Analytical Chemistry, Moscow 117975, Russia (nazarov@ geokhim). Introduction: Here we report...(Dhofar 007) and noncumulated (NWA 011). Results: A meteorite shower, 37 pieces weighing a total of 21,270 g...subhedral grains (0.2-0.8 mm) of pyroxene and plagioclase. Accessories are metal, troilite, and chromite...(in v o l l ) is roughly pyroxene (49.9) and plagioclase (47.2), Fe, Ni-metal (1.6), troilite (I.]), chromite...= 34 (atomic), and TiO, content is 0.39 wt%. Plagioclase is anorthite (A%-9z). Chromite is characterized |
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| elements in Apollo 11 lunar rocks: Implications for meteorite influx and origin of moon 1117 P. W. GAST, N....in the Barwell and St. Severin 1neteorites. In Meteorite Research, (editor P. Millman), pp. 267- 274. D...metal of stone and stony-iron meteorites. In Meteorite Research, (editor P. Millman), pp. 355- 362. D...fluorescence spectrometry. TR denotes total rock, PL plagioclase, PX pyroxene and M mesostasis. Sr87 /Sr86 is...1970; SCHMITT et al., 1970) to suggest that plagioclase may have precipitated out of the lunar magmas |
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| Radioactivity in Lunar Rocks: Implications for Meteorite Infall, Solar-Wind Flux, and Formation Conditions...pyroxene, often highly zoned with iron-rich rims, plagioclase, ilmenite, olivine, and cristobalite. Three new...is consistent with the observed occurrence of meteorite material in the soil. Many elements such as potassium...sample showing major minerals: (O) olivine, (P) plagioclase, (1) ilmenite, and (C) clinopyroxene. (Center)...experimental error as the value obtained from meteorite lead. The apparent ages are shown in Table 2. |
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| Radioactivity in Lunar Rocks: Implications for Meteorite Infall, Solar-Wind Flux, and Formation Conditions...pyroxene, often highly zoned with iron-rich rims, plagioclase, iln,enite, olivine, and cristobalite. Three...is consistent with the observed occurrence of meteorite material in the soil. Many elements such as potassium...sample showing major minerals: (0) olivine, (P) plagioclase, (I) ilmenite, and (C) clinopyroxene. (Center)...leads used for correction are prin1eval lead of meteorite (7) for san1plcs 10061 and 10084 and common lead |
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| of eucrites Stannern and Nuevo Laredo in lunar-meteorite comparative studies 9(4): 341-344 0014 Ahrens...Distribution de la matiere organique dans la meteorite d'Orgueil par microscopic en fluorescence 19(4):...the early Precambrian Amitsoq gneisses, Godthaab District, West Greenland 19(1): 22-28 0114 Baadsgaard...; et al. T h e exposure history of the Pitts meteorite 9(4): 317-321 0199 Begemann, F.; Vilcsek, E...thermal history of the Tieschitz unequilibrated meteorite; metallic chondrules and the origin of polycrystaUine |
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| elements in Apollo 15 samples: Implications for meteorite influx and JOHN W. MorGan, URS KRAHENBUHL, volatile...analyzed by electron microprobe. Data are given on plagioclase, orthopyroxene, three glass fractions, and two...two rock fractions from sample 14163, and on plagioclase and orthopyroxene fractions from rock 14310....Published modal analyses of 14310 show that plagioclase plus pyroxene constitute about 95% of the rock...This fine fraction was analyzed separately. Plagioclase, orthopyroxene, light and dark rock fragments |
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| grains (Hoppe et al., 1995) from the Murchison meteorite are compared to astronomical measurements of the...bulk samples of SiC extracted from the Murchison meteorite. Isotopic ratios are relative to the reference...result of isotopic equilibration, either on the meteorite parent body or in the laboratory. Apparently,...circumstellar silicon carbide grains from the Murchison meteorite. Meteoritics 30, 679–693. Amari S., Lewis R. S...interstellar graphite grains from the Murchison meteorite indicate a massive star origin. Astrophys. J. |
