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| Mg)Al12O19, a new alteration mineral from the Allende meteorite Chi Ma* Division of Geological and Planetary...Ca-,Al-rich refractory inclusion from the Allende meteorite. It occurs as scattered micrometer-sized single...hercynite (Fe,Mg)Al2O4, adjacent to nepheline, ilmenite, ferroan spinel, perovskite, and hibonite. The...refractory inclusion, secondary alteration, Allende meteorite, carbonaceous chondrite, nanomineralogy introduCtion...During a nanomineralogy investigation of the Allende CV3 meteorite at Caltech, new refractory minerals and |
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| from an ultrarefractory inclusion from the Allende meteorite Chi Ma*, John R. Beckett and George R. Rossman...During a nanomineralogy investigation of the Allende meteorite with analytical scanning electron microscopy...chemistry. Allendeite is named after the Allende meteorite. The name hexamolybdenum refers to the symmetry...alloy, new mineral, EBSD, nanomineralogy, Allende meteorite, CV3 carbonaceous chondrite Introduction...the lyrics. The Allende meteorite, which fell near Pueblito de Allende, Chihuahua, Mexico, on February 8 |
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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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| 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...FUDALIand NOONAN ( 1975) reported a small spine]-ilmenite-rutile chondrule from the Gobabeb H4 chondrite...objects in ordinary chondrites and the unique meteorite Kakangari (BISCHOFF and I&IL, 1983~). We studied |
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| RHONITE-BEARING CALCIUM ALUMINUM RICH INCLUSION IN THE ALLENDE METEORITE Louis H. Fuchs Chemistry Division Argonne...inclusions (CAls) appears to be restricted to the Allende meteorite. These inclusions, however, are very scarce...oxide (20-27 wt % V203 ) , molybdenite, geikielo-ilmenite and magnetite. Although this mineral assemblage...contain rhonite appear to be unique to the Allende meteorite. Although they might occur in other C-I1I(V)...may preclude such finds. That they are found in Allende is undoubtedly due to the abundance of specimens |
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| Origin of zoned fine-grained inclusions in the Allende meteorite ANNE V. MCGUIRE* and AKIHIKO HASHIMOTO Harvard-Smithsonian...fine-granted Ca-Al-rich inclusions in the Allende meteorite show a consistent pattern of mineralogic and...sodalite, grossular, anorthite, perovskite, and ilmenite. In most inclusions, these minerals occur as loosely...of intergrown olivine and nepheline with small ilmenite grains enclosed. The other type of zone C consists...the zone C consisting of olivine, nepheline and ilmenite was probably a spinel-rich belt mantling the inclusion |
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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...(Mason, 1962), when I wrote an account of the meteorite minerals then recognized, see Table 1, the list...Cristobalite Si0 2 310 Table 1 (Continued) Name Ilmenite Spinel Magnetite Chromite Formula FeTi0 3 MgAh... Brett (1967); silica minerals, Grant (1969); ilmenite, Snetsinger and KeiI (1969), Bunch and Keil (1971); |
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| Murray, Murchison, Cold Bokkeveld (type C2s) and Allende (type CV3) meteorites. Characterization: C2 IAlates...IAlates, comprising 0.5% of the bulk meteorite are fine-grained (< 100A), amorphous, sulfide-free, oxidizable...which pyrolyze bimodally at 20&700 and 80&12ooâC. Allende IAIates are similar but with traces of inferred...laboratory to gas studies in the carbonaceous meteorite-s. There was obvious need to disassemble these...chemical means and had isolated a fraction of the Allende stone which is extraordinarily richer (orders of |
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| 2. Lunar geology. 3. Planets â 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; â. . .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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| feldspar(Orrr), leucite,titanomagnetite(MagroUspro),and ilmenite (IlmrnHem,). Augite rims contain up to 8.8 weight...augitesfrom the Moon (up to 9.3 wt%oTiOr) and Allende meteorite(ryto 17.7wrvo TiOr) indicate that half or...or more of the Ti is Ti3+.Thus, although the Allende augitesare much richer in Ti (with much as CaTi3+AlSiO...buffer, but much more oxidizing than lunar and Allende meteorite conditions. Introduction hornfels in Scotland...Ti content.The most Ti-rich are from the Allende meteorite and contain up to 22 augitesfrom Tahiti are |
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| Photomicrograph of thin (10am) section of the Andura meteorite, an olivine bronzite-chondrite contrast between...chondrule composition of the Allende a meteorite; the Pulsora meteorite and metamorphic equilibration...67943, 1, by 25 ol METEORITES THE ALLENDE History THE METEORITE: OF THE Putsora TION IN SOLAR...DATA ON EIGHT OBSERVED-FALL CHONDRITIC WITH METEORITE, METEORITES, by Roy S. Clarke, Jr., Eugene Jarosewich...Department With this introduction, it is convenient to de- scribe the operations of the different segments |
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| and the Allende meteorite fell in Mexico, CV3 chondrites have played a major role in meteorite studies...more primitive than other chondrites, and because Allende contains numerous large, seemingly pristine and...carbonaceous chondrite fall, Allende quickly became the most widely studied meteorite, a title it still holds...holds today. Initially, studies of CAIs from Allende appeared to validate the recently developed equilibrium...metallic Fe,Ni and magnetite. McSween suggested that Allende, an oxidized CV3 chondrite, had experienced mild |
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| chemistry and origin of spinel-rich inclusions in the Allende CV3 chondrite ALAN S. KORNACKI Shell Oil Company...spinel-rich nodules in 16 olivine-rich inclusions) in Allende was studied by electron probe microanalysis. Variations...was also studied. The mineralogy of spinel-rich Allende inclusions is similar to the mineralogy of fine-grained...ALH-77003 and rims on coarse-grained CAlâs in Allende; spine]-rich inclusions in Mokoia, Kaba, and Murchison...mineral chemistry, and bulk chemistry of spinel-rich Allende inclusions indicate that they are not primitive |
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| TIBOOBURRA, A NEW AUSTRALIAN METEORITE FIND, AND OTHER CARBONACEOUS CHONDRITES OF HIGH PETROLOGIC GRADE...Petrological evidence suggests that. like the Allende meteorite. Tibooburra is a CV3 chondrite which has experienced...effects associated with the fall of the Karoonda meteorite in 1930 remain unrivalled in Australia to this...studies of the composition and mineralogy of this meteorite ...classification is the most appropriate for the meteorite. McSween (1979). in his review of the carbonaceous |
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| Pergamon PII S0016-7037(97) 00019-7 Petrology of Allende dark inclusions P. C. BUCHANAN, ~'* M. E. ZOLENSKY...neutron activation analysis are reported for eight Allende dark inclusions ( D i s ) and compared with compositions...inclusions of sodalite, nepheline, pentlandite, ilmenite, and spinel in these olivines suggest that phyllosilicates...depletions of these clasts in Ca relative to bulk Allende suggest that these rims were also the result of...standard polished thin sections at the NASA-JSC meteorite processing facility. Where material was available |
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| inside amoeboid olivine aggregates in the Allende meteorite AIUHIKO HASHIMOTOâ and LAWRENCE GROSSMANâ...feldspathoids and perovskite was partially replaced by ilmenite. In heavily altered inclusions, fassaite has been...been replaced by a mixture of phyllosilicates j_ ilmenite and the remaining primary phases are spine1 ?...to Cl chondrites but by a lower factor than in Allende coarse-grained inclusions. This was attributed...condensate assemblagesâ of our earlier work on Allende amoeboid olivine aggregates and the âconcentric |
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| high concentrations of FeO and ZnO in spinel, ilmenite instead of perovskite, abundant Na,Al(Cl)-rich...al. 1996). They are named after the Rumuruti meteorite, the first and so far the only R-chondrite fall...Characterization and listing of the meteorite samples and inclusions studied. Meteorite Class Type 3a Ref. Inclusion...Accessory mineral phases include perovskite and ilmenite. A monomineralic rim (~5 ”m) of diopside or Al-diopside...Au-contamination remnants from Aucoating, those in (b) are ilmenite (Ilm). lithologies, distinct oligoclase rims |
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| supported by NSF grant EAR 76-01146. THE SHAW METEORITE: EVIDENCE FOR AN IGNEOUS ORIGIN J.L. Berkley...Fodor, G.J. Taylor and K. Keil, University of New Mexico, Albuquerque, NM 87131 R.M. Fruland, Johnson Space...Space Center, Houston, TX 77058 The Shaw meteorite has Lgroup chondritic bulk chemistry and mineralogy...recrystallization, support an igneous origin for the Shaw meteorite. Data are presently insufficient to determine...million years in one fragment of the Dhajala meteorite have been measured. The variation of 54Mn and |
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| where R = crate ring rate, m = moon, and p = meteorite parent body. In terms of this relation, the above...cometary origin can be ruled out for all stony meteorite classes that have gas-rich members. This includes...crystal from the Murchison meteorite. A REINVESTIGATION OF THE LODRAN METEORITE Richard W. Bild, John T...California Los Angeles, CA 90024. The Lodran meteorite was described by Tschermak. He reported a friable...ABLATION OF AN OLIVINE WITH FUSION CRUSTS ON THE ALLENDE AND MURCHISON METEORITES M.B. Blanchard*, G.G. |
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| THE CLOVIS (no. 1), NEW MEXICO, METEORITE AND Ca, AI AND Ti-RICH INCLUSIONS IN ORDINARY CHONDRITES Albert...analyses of the major silicates in Clovis (no. 1), New Mexico, establish it as an H3 chondrite. Inclusions identified...matrix. INTRODUCTION The Clovis (no. 1), New Mexico, meteorite was found in March, 1961, by C.W. Saunders...in Washington, D. C. (NMNH 2170). The Clovis meteorite was previously classified as an H3 chondrite on...is A, Overall chondritic texture of the Oovis meteorite; B, breccia clast in Clovis; C, abraded and vesicular |
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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...some interpretations will be attempted. 171 K Meteorite Type (ppm) johnstown (whole rock) Di 853...Total Ar 39_Ar40 age (G.Y.) 4.38 4.07 maximum Meteorite minimum Bjurbole 4.12 3.46 3.96 3.98 1.62 |
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| INCLUSIONS (CAIs) IN CV CHONDRITES, particularly Allende, have been extensively studied, but much less work...electron microscope studies ofCAIs in the Antarctic meteorite Yamato791717 (Y791717), a CO chondrite (Yanai..."sinuous"-rimmed, complex CAIs described from the Allende CY chondrite (Kornacki and Wood, 1984) and appear...observed by Kornacki and Wood (1985) in their Allende Type IB inclusions. Melilite Melilite occurs as...fassaite, Di = diopside, Pv = perovskite, 11m = ilmenite. t Analyses I and 2 from inclusion Y17-6 (Fig |
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| Society, 1997. Printed in USA. Mineralogy of meteorite groups ALANE. RUBIN Institute of Geophysics and...shocked ordinary chondrites. Secondary minerals in meteorite finds that formed during terrestrial weathering...numbers of meteorites (including members of new meteorite groups; Table 1) from hot and cold deserts, the...variations 23 1 A. E. Rubin 232 TABLEI . Meteorite classification. Chondrites Carbonaceous chondrites...Wasson and Kallemeyn, 1990). 233 Mineralogy of meteorite groups TABLE 2. Minerals in meteorites. ~~ ~ |
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| (C03) The history of an ultrarefractory CA1 meteorite: ALBERT J. FAHEY,â* ERNST ZINNER,â GERO KURAT...hibonite-rich refractory inclusion from the Lance CO3 meteorite. The inclusion, 290 X 230 pm in size, consists...The hercynite contains many small perovskite, ilmenite, and sulfide grains. Trace element abundances...with increasing mass in hibonite, perovskite, and ilmenite, but not hercynite. Calcium and titanium are isotopically...5%0in 49Ti in hibonite, hercynite, perovskite, and ilmenite. In addition, the titanium isotopes show a mass-dependent |
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| by the IMACNMNC, including 17 from the Allende CV3 meteorite (Ma, 2015a) and high-pressure phases such...grossite hematite hercynite hibonite hibonite-(Fe) ilmenite kamiokite kangite krotite lakargiite loveringite...hydromagnesite hydroxylapatite icosahedrite idaite illite ilmenite indialite irarsite iridarsenite iridium iron iron...newly-identiïŹed refractory mineral tistarite (Ti2 O3 ) in Allende along with corundum and khamrabaevite (TiC) grains...khamrabaevite (TiC) grains in a chondrule from the Allende CV3 chondrite (Ma and Rossman, 2009a). BSE image |
