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| a new Cl-rich silicate mineral from the Allende meteorite: An alteration phase in a Ca-Al-rich inclusion...effects) Ca-Al-rich inclusion (CAI), Egg-3, from the Allende CV3 carbonaceous chondrite. The mean chemical composition...g/cm3. Adrianite is a new secondary mineral in Allende, apparently formed by alkali-halogen metasomatic...wadalite during metasomatic alteration of the Allende CAIs suggests that the metasomatic fluids had Cl-rich...Brearley, mineralogist at the University of New Mexico, U.S.A., in recognition of his many contributions |
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| PUBLISHING COMPANY HIBONITE [Ca2(A1,Ti)24038 ] FROM ALLENDE CHONDRITIC THE LEOVILLE AND METEORITES* Klaus...Meteoritics, The University of New Mexico, Albuquerque, New Mexico 87106, USA "and Louis H. F U C H S...Si-Fe-poor, achondritic inclusions of the Leoville and Allende HL-group chondrites. Two varieties of hibonite...a m o r p h o s e d limestone rich in calcic plagioclase and associated w i t h c o r u n d u m , spinel...polymict-brecciated HLgroup chondrites Leoville and Allende, and the present paper deals with a detailed description |
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| dmisteinbergite (hexagonal CaAl2Si2O8) in the Allende meteorite: A new member of refractory silicates formed...B2 Ca-,Al-rich inclusion (CAI) STP-1 from the Allende CV3 carbonaceous chondrite. STP-1 belongs to a...away from region, possibly by a disk wind. The Allende dmisteinbergite occurs as irregular single crystals...rapid cooling. Dmisteinbergite in Allende, the first find in a meteorite, is a new member of refractory...hexagonal CaAl2Si2O8, new refractory silicate, Allende meteorite, carbonaceous chondrite, Ca-,Al-rich refractory |
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| REFRACTORY INCLUSIONS =-=10141 IN THE ALLENDE METEORITE Annu. Rev. Earth Planet. Sci. 1980.8:559-608...INTRODUCTION The fall of the Allende Type 3 carbonaceous chondrite in Chihuahua, Mexico, on February 8, 1 969...severely limited by the rarity of these types of meteorite, their small sizes, and the relatively small sample...Such a view is shown in Figure 1 , from which Allende is seen to consist of a heterogeneous mixture of...inde pendent histories. Except for its size, Allende does not appear to be un usual among other Type |
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| CORDIERITE AND ALUMINOUS ORTHOENSTATITE IN THE ALLENDE METEORITET Lours H. Fucus, Argonne n"ational Laboratory...meteoritic occurrence of cordierite, in a nodule in the Allende Tlpe III carbonaceouschondrite, is reported. X-ray...formed as a highly fractionated system Lvithin the meteorite or as part of a chemical-pressure environment...environment foreign to that indicated for the meteorite. INrnotucuort The first meteoritic occurrenceof cordierite...AIIende chondrite. This meteorite, which fell near Parral, Chihuahua, Mexico on February 8, 1969,is a |
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| RELATIONS OF SULFIDE, SULFATE AND SULFUR IN ORGUEIL METEORITE Manuel N. Bass NASA Manned Spacecraft Center...concurrently forming cracks in unheated portions of the meteorite. The minerals of Orgueil indicate a many-stage...recognized for some time by its occurrence in meteorite fusion crusts. Also spherules of wustite have...chondrites. The calculations suggest a method of de ducing equilibration temperatures of enstatite chondrites...Territory, Australia are identified as being of meteorite impact origin. Liverpool Crater, lat 12° 24'S; |
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| com/locate/epsl Magnetization of Extraterrestrial Allende material may relate to terrestrial descend Gunther...3 February 2018 Editor: J. Brodholt Keywords: Allende magnetic dynamo paleomagnetism bolide decelerating...a b s t r a c t The origin of magnetization in Allende may have significant implications for our understanding...magnetic Allende data may contain information that could constrain the magnetic history of Allende. The measurements...measurements on Allende chondrules reveal an existence of magnetization component that was likely acquired |
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| Coolidge, Mulga (West) and, to a lesser extent, Allende, as evidenced by ferromagnesian mineral equilibration...the metamorphic effects in the Allende chondrite (the only meteorite of the group that has been intensively...of the Vigarano subtype, it is suggested that Allende alone may not adequately reflect the wide spectrum...carbonaceous chondritic scription of the Arch meteorite has not been pubmeteorites [particularly the Type...system. The C3 class has been subdivided into meteorite find from Australia, may also belong with two |
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| type III carbonaceous chondrites such as the Allende meteorite are composed primarily of these minerals and...U content of the lunar interior, both from the Allende analogy and the high heat flow, indicates a high...is predicted that the outer 250 km is rich in plagioclase and FeO. The low iron content of the interior...chondrites (circles and solid lines)and versus Allende Ca-A1rich inclusions (triangles and dashed lines)...the Allende meteorite. This is a good agreement between the lunar surface rocks and the Allende inclusions |
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| 94. Pergamon Press, Printed in Great Britarn Allende inclusions: volatile-element distribution and evidence...Abstract-Neutron activation data on 14 trace elements in Allende bulk samples and in fractions of spheroidal Ca-Al-rich...been found. We propose that the large size of Allende spheroidal inclusions indicates an origin by incomplete...inclusions. From the composition and alies in Allende materials which could not be undermineralogy, MARVINet...have compositions that are We studied several Allende inclusions in order to very similar to mean solar |
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| electron microscopy of chondrule minerals in the Allende meteorite : constraints on the thermal and deformational...solar nebula prior to or during accretion of the meteorite parent bodies. The textures and mineralogy of...Miiller et al. : Chondrule minerals in the Allende meteorite heat source, precursor material, cooling...defects, precipitates, grain and phase boundaries). Allende is one of the best studied meteorites, but little...have chosen the Allende CV carbonaceous chondrite for our study, because this meteorite belongs to the |
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| of Hawaiian basal& plagioclase, tektites, and samples from the Allende meteorite. Procedures are described...range) of 60-120 Na and 3@-60K. The gas-deficient plagioclase and tektite sample showed only equilibrium vaporization...60 Na, 10 K (plagioclase) and 10 Na, 5 K (tektites) at 9OO-1000°C. The Allende meteorite vaporized at...and H2S. The major gases released from the Allende meteorite at 9~l~*C are, in order of decreasing abundance...alkali-rich vapors which subsequently deposited plagioclase crystals in the vugs of lunar rocks. The vesiculative |
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| SODALITE IN A BARRED OLIVINE CHONDRULE FROM THE ALLENDE METEORITE Gregory R. lumpkin Department ofPhysics University...in a barred olivine chondrule from the Allende C3V meteorite. The major minerals of the chondrule are...Olivine bars are separated by glass of nearly pure plagioclase composition (AnSl-99)' Olivine composition is...non-equilibrium are implied from this and the presence of plagioclase glass and small amounts of subcalcic diopside...fine-grained Ca-Al-rich inclusions (CAl) in the Allende C3V carbonaceous chondrite (Clarke et al., 1970; |
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| 22Ne/21Ne ratios observed in inclusions of the Allende carbonaceous chondrite, and observed during low-temperature...during the stepwise heating of a trapped gas-rich meteorite containing sodium-rich phases can be expected...measured cosmogenic 22Ne/21Ne ratio in a bulk meteorite sample. This apparent change in composition can...overestimation of the minimum pre-atmospheric mass of the meteorite by a factor of two. 1. Introduction Neon in...high as 1.67) in inclusions from the C3 chondrite Pueblito d'Allende, and suggested that this unusual gas |
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| mineral chemistry of Ca-rich inclusions in the Allende meteorite LAWRENCE GROSSMAN Department of the Geophysical...white, coarse-grained, &-Al-rich inclusions in Allende. Type A inclusions contain SO-85 per cent melilite...cent spinel, 1-2 per cent perovskite and rare plagioclase, hibonite, wollastonite and grossularite. Clinopyroxene...pyroxene, 16-30 per cent spine& 5-25 per cent plagioclase and 6-20 per cent melilite. The coarse pyroxene...microprobe analyses of 600 melilite, 39 pyroxene, 35 plagioclase, 33 spine1 and 20 perovskite grains were performed |
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| unaminclusions occurring together in the same meteorite biguous textural evidence of having been totally...have not been sigdrites (principally the Allende C3 meteorite), surprisnificantly altered by thermal metamorphism...examined (MC&ZEN, 1977a, 1977b), and chondrules in Allende (WALTER and DODD, 1973; the meteorites in which... 1969; DODD and WALTER, 1972; DEGASWarrenton, Allende, Coolidge, Karoonda) are PARISet al., 1975) have...Tennessee, Knoxville, TN 37916, U.S.A. analyzed. This meteorite consists of dark carbonaINTRODUCTION 1843 1844 |
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| Aluminum-Titanium-Rich furoxenes,with SpecialReference the Allende Meteorite to BmaN MesoN Smithso nian I nstitutio n,...D.C. 2 0 5 6 0 Abshact Some chondrules in the Allende Type III carbonaceous chondrite contain the assemblage...to 1.00. In terms of pyroxene components, the Allende pyroxene is made up of CaMgSi,O", CaAl"SiOu, CaTiAl"Ou...mineralogicalinvestigationof the Allende meteorite, a carbonaceouschondrite which fell in Mexico on February8, 1969...meteorites is in Vigarano, which is similar to Allende in composition (Michel-Levy, Caye, and Nelen, 1970) |
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| 2. Lunar geology. 3. Planets — Surfaces. 4. Meteorite craters. I. Title. QB501.K56 550'.999 75-45357...at Mecca. This stone is widely reputed to be a meteorite and even thought to be the oldest preserved fragment...Jefferson was quoted in reference to a report of a meteorite fall; “. . .It may be very difficult to explain...of modes of meteorite origin, and possible genetic relations between different meteorite types. More... Paris Museum of Natural History, Center for Meteorite Studies of Arizona State University, Harvard and |
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| RARE EARTH ELEMENTS IN Ca-PHOSPHATES OF ALLENDE CARBONACEOUS CHONDRITE Mitsuru Ebihara Department of... Tokyo The Ca-phosphate phases in the Allende CV3 meteorite were selectively dissolved in ammoniacal...concentrations of REE in the ordinary-chondrite phosphates. Allende phosphates have a small positive Eu anomaly, in...anomaly in Allende Ca-phosphates is puzzling, the lack of a negative Eu anomaly in Allende Ca-phosphates...that they never have been in equilibrium with Allende coarse-grained Ca, Al-ricb inclusions or their |
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| Prmted in Great Br~tam Noble gases in the Allende and Abee meteorites and a gas-rich mineral fraction:...NeKrXe in Allende (C3V) and an Allende residue insoluble in HF-HCI, and Xe in Abee (E4). In, Allende, chromite...8.7) and anomalous release it at -850°C (bulk meteorite) or 1000°C (residue). Mineral Q. containing most...as follows over the peaks% the release curve: Allende 1000” (75%), 1300” (25%); Abee (data of HOHENBERG...possible candidates are troilite and silicates for Allende, and djerfisherite, troilite and silicates for |
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| apparent persistence of the presolar age of an Allende inclusion Elmar K. Jessberger Max - Planck- lnstitut...neutron-irradiated quartz ampoules which contain samples of Allende coarse-grained inclusions or aluminum wrap only...dating of Ca-Al-rich inclusions (CAIs) from the Allende carbonaceous chondrite for a few of them resulted...It should be pointed out that whenever possible Allende CAIs were irradiated and analyzed not as finely...et al. [20] who analyzed argon in two lunar plagioclase separates (98% purity) which were irradiated |
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| EARTH SCIENCES • NUMBER 25 Inclusions in the Allende Meteorite Brian Mason and S.R. Taylor ISSUED OCT 51982...Brian, and S.R. Taylor. Inclusions in the Allende Meteorite. Smithsonian Contributions to the Earth Sciences...inclusions have been distinguished in the Allende meteorite. Groups I, V, and VI are mostly melilite-rich...distribution in these Allende inclusions indicate a complex history of formation of this meteorite from the solar...Mason, Brian Harold, 1917Inclusions in the Allende meteorite. (Smithsonian contributions to the earth sciences |
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| Laboratoire de Geochimie et Cosmochimie - Institut de Physique du Globe et Departement des Sciences de la Terre...TREMORGIO (CANTON TICINO) AS A POSSIBLE QUARTERNARY METEORITE IMPACT CRATER IN THE SWISS ALPS Kurt Bachtiger...the author had, some years ago, the idea of a meteorite impact crater in the Quarternary, i.e. 20-50,000...to 25° relative to the twinnings of the host plagioclase. Taking into account the contemporary morphological...some interpretations will be attempted. 171 K Meteorite Type (ppm) johnstown (whole rock) Di 853 |
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| identification has elucidated many aspects of meteorite formation. Of particular interest are five phosphate...calcium- and aluminum-rich silicates in the Allende meteorite, a Type 1II carbonaceous chondrite which fell...of the common minerals olivine, pyroxene, and plagioclase has also been greatly increased by recent researches...(Mason, 1962), when I wrote an account of the meteorite minerals then recognized, see Table 1, the list...(Mg,Fe)Si0 3 Clinopyroxene (Ca,Mg,Fe)Si0 3 Plagioclase (Na,Ca,)(AI,Si)40 8 Serpentine (or chlorite) |
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| Institute of Meteoritic%University of New Mexico, Albuquerque,New Mexico 87131, USA 2Institut fur Mineralogie...containing unequilibrated material, the unique meteorite Kakangari, and a few types 5 and 6 ordinary chondrites...accretion. f) Coarse-grained inclusions as found in Allende were not observed in ordinary chondrites. INTRODUCTION...objects in ordinary chondrites and the unique meteorite Kakangari (BISCHOFF and I&IL, 1983~). We studied...a total surface area of about University of hew Mexico; USN+ Natlunal D.C.; NM%= harurhistnrxschr$ Museum |
