 | Liu, Chao, Hystad, Grethe, Golden, Joshua J., Hummer, Daniel R., Downs, Robert T., Morrison, Shaunna M., Ralph, Jolyon P., Hazen, Robert M. (2017) Chromium mineral ecology. American Mineralogist, 102 (3) 612-619 doi:10.2138/am-2017-5900 | Journal (article/letter/editorial) | | environments, from igneous rocks (typical minerals: chromite, magnesiochromite), metamorphic rocks (typical...Chromio-pargasite (1) NaCa2(Mg4Cr)(Si6Al2)O22(OH)2 7 3 X 12 8 Chromite (3054) FeCr2O4 1, 2, 9 3 1, 5, 8, 12, 18 9 Chromium-dravite...Mine; El Khun Mine), Anarak District, Nain County (Nayin County), Esfahan Province (Isfahan Province; Aspadana...Rio Blanco Co., Colorado, U.S.A. 34 Orebody 31 (Chromite Deposit 31), Luobusha Mine, Luobusha Ophiolite...(Valais), Switzerland 39 Weathered Norton County meteorite, Norton Co., Kansas, U.S.A. Notes: Listed |  | | Journal (article/letter/editorial) | | Washington University, St. Louis, 31[o. 63130 (USA) Received June 21, 1977 Revised version received...investigation of the minor mineral phase chromite in the Allende meteorite. Although this mineral is a possible...magnitude fewer fission tracks present in the chromite than would be expected if the reported anomalous...meeting in 1975 focussed special attention on the meteorite Allende as a promising object for the search....residue representing only 0.5% by weight o f the meteorite. Oxidizing experiments on these residues remove |  | | Journal (article/letter/editorial) | | doi: 10.1111/maps.12815 Remnants of altered meteorite in the Cretaceous-Paleogene clay boundary in Poland...bottom part of the host layer. The fragments of meteorite (2ā6 mm in size) and meteoritic dust are metallic-gray...Geochemical and petrographic analyses of the meteorite from Lech owka reveal the presence of Ni-rich...not permit the chemical classification of the meteorite fragments. However, the recognized mineral inventory...texture may indicate that the meteorite remains were an iron meteorite. Until now, there are only a |  | | Book | | obtain a panorama of the scope and substance of meteorite research. I endeavored to remedy this situation...not exhaustively discussedāthe great upsurge in meteorite research along many new lines in recent years...and conservation of meteoritic material. Every meteorite is to some degree unique; and meteorites, unlike...I not been favored bv the curatorship of the meteorite collection of The American Museum of Natural History...Chicago Natural History Museum, the Nininger Meteorite Collection (Arizona State University, Tempe), |  | | Journal (article/letter/editorial) | | sufpresence of two gascomponents, oneassociated with chromite ficientlyhighCoulombbarriersto survivein the centralregion...are also severalways of from the Orgueil and Murray meteorite,Meteoritics,II, 281-283, 1976. producingeach...and E. Anders, Gas-rich mineralsin the Allende meteorite: seek to understand are correlations between...in at least four separateminerals of Allende--chromite, carbon, Qā¢, and Q2 [Gros and Anders, 1977;Srinioasanet...1977; Extinct superheavyelementin the Allende meteorite,Science,190, acceptedDecember 21, 1978.) 1262-1271 |  | Bunch, T.E., Chang, S., Frick, U., Neil, J., Moreland, G. (1979) Carbonaceous chondritesāI. Characterization and significance of carbonaceous chondrite (CM) xenoliths in the Jodzie howardite. Geochimica et Cosmochimica Acta, 43 (11) 1727-1742 doi:10.1016/0016-7037(79)90021-8 | Journal (article/letter/editorial) | | regolith alteration on a level comparable to the Murray and Murchison meteorites but less than Nagoya,...3) include pyroxenes, pyrrhotite, pentlandite, chromite, schreibersite, and a new Fe, Ni, Cr, P-sulfide...shows that some olivine in Allende, Murchison, and Murray also contain S (BUNCH and CHANG,1979). Moreover...grains have detectable amounts. Only five small chromite and three magnetite grains were found in the matrix;...mineral was found in chondrules or aggregates. Chromite compositions vary moderately from grain to grain |  | | Journal (article/letter/editorial) | | Copyright 0 1996ksevier Scienk Ltd Printed in the USA. Allrights reserved L22izh Pergamon 0016-7037/94...California, San Diego, La Jolla, CA 92093-03 17, USA (Received Mu!: 10, 1993; accepted in revised,form...troilite separates of the Cape York III A iron meteorite. High resolution (20 step release) nitrogen isotopic...We discuss possible genetic links between iron meteorite groups based on nitrogen isotopic signatures in...understanding 6 15N variations among various meteorite groups. Replicate analyses of some meteorites |  | | Journal (article/letter/editorial) | | 1988) Abstract-Data on gas-richseparatesfrom the Murray and Murcbison C2 chondrites are reviewed, in order...has been found in the rl300ā fractions of several Murray separates; its carrier is colloidal and resistant...mineral. A coarse (>2 pm) spine1 fraction horn Murray contains fissiogenic Xe matching that from PuzM...corresponds to an original (Cm24*/Pu2ā), zz 1.7 X 10s3. Murray CJ, a sample strongly enriched in Ne-E(H) and its...isotopic data on Ne and Xe in 35 separates from the Murray and Murchison C2 chondrites, including many that |  | | Journal (article/letter/editorial) | | and sometimes after acid demineralization-from Murray, Murchison, Cold Bokkeveld (type C2s) and Allende...Characterization: C2 IAlates, comprising 0.5% of the bulk meteorite are fine-grained (< 100A), amorphous, sulfide-free...spine1 and chromite and of sulfur, Rare gas results: Elemental: Release from stepwise heated Murray is bimodal...indeed xenon from stepwise heating of Renazzo, then Murray, then other carbonaceous stones seemed to confirm...laboratory to gas studies in the carbonaceous meteorite-s. There was obvious need to disassemble these |  | | Book (volume) | | Appendices, References PUBLISH ED FOR THE CENTER FOR METEORITE STUDIES, ARIZONA STATE UNIVERSITY BY THE UNIVERSITY...Poems, London,l803 PREFACE The Center for Meteorite Studies is pleased to have the opportunity to...work. As a part of his travels the Center for Meteorite Studies is proud to acknowledge the year he spent...teaching about the meteorites in the Nininger Meteorite Collection. This set of books is the most comprehensive... Foremost certainly as far as the Center for Meteorite Studies is concerned is Herbert G. Fales whose |  | | Journal (article/letter/editorial) | | California Institute of Technology, Pasadena, CA 91125, USA Received May 5, 1991; revision accepted September...[5,9] presumably reflects dilution by spinel, chromite and hibonite concentrated in the coarse fraction...include Si- and N-bearing grains. 4 Sp: spinel; Ch: chromite; Cr-Sp: Cr-spinel; Hb: hibonite; Co: corundum...petrologic grade and degree of oxidation of the host meteorite on the abundance, physical properties and isotopic...the residues (predominantly spinel, hibonite and chromite) using a J E O L JSM-35CF SEM with a Tracor TN-5500 |  | | Journal (article/letter/editorial) | | noble gases, we isolated 15 separates from the Murray C2 chondrite on the basis of grain size and chemical...sample in an acid-insoluble residue of Sic, C6, and chromite, which was left when a coarse spine1 fraction...carriers of isotopically anomalous noble gases in the Murray and Murchison C2 chondrites. The separation methods-mainly...up to 103-fold enriched relative to the bulk meteorite, they still contained the carriers only at an...different approaches on two other fragments of Murray, B and C. Fragment B was fractionated mainly by |  | | Journal (article/letter/editorial) | | University of New Mexico, Albuquerque, NM 87 I3 1, USA (Received May 23, 1989; accepted in revisedform January...carbon, amorphous carbon, Fe,Ni metal, and minor chromite. Contrary to previous reports, well-crystallized...rather than after chemical extraction from the meteorite. Such textural information can potentially answer...obtained by analytical electron microscopy. Meteorite nc. 1. Typical selected-areaelectron diffraction...metal varies slightly (see Table 1) from meteorite to meteorite, but in all cases lies in the range 3-10 |  | Zega, Thomas J., Nittler, Larry R., Gyngard, Frank, Alexander, Conel M.OāD., Stroud, Rhonda M., Zinner, Ernst K. (2014) A transmission electron microscopy study of presolar spinel. Geochimica et Cosmochimica Acta, 124. 152-169 doi:10.1016/j.gca.2013.09.010 | Journal (article/letter/editorial) | | grains identiļ¬ed in acid-resistant residues of the Murray CM2 and Orgueil (ORG) CI1 chondrites, and a mixture... However, the FeāCr-rich compositions (nearly chromite) are inconsistent with predictions for equilibrium...transport histories through the ISM and alteration in meteorite parent bodies. A number of minerals belong to...Range, QUE 97008; Mount Wisting, WSG 95300; and Meteorite Hills, MET 00452) unequilibrated ordinary chondrites...grain (Murray 2-19-13, Nittler et al., 2010) was found in the same acid residue of the Murray CM chondrite |  | | Journal (article/letter/editorial) | | the host phases of type-X gases are-carbon and chromite. However, studies at Berkeley indicate that carbon...noted earlier by Eberhardt et al. (1972). Most meteorite samples seem to contain mixtures of these three...carbonaceous chondrite (e) and the Fayetteville meteorite (e). References are in text. 123 noble gases...chondrites, Allende (Lewis et ai., 1975, 1977a), Murray (Reynolds et ai., 1978), Omans (Srinivasan et ai...isotopic ratios of noble gases in acid-etched meteorite residues. The correlations and their intercepts |  | | Journal (article/letter/editorial) | | University of Chicago, Chicago, IL 60637-1433, USA (Received July 11, 199 1; accepted in revised form...r70%, and is here applied to the Murchison C2M meteorite. Silicates are dissolved in HF-HCl, kerogen (macromolecular...Washington University, St. Louis, MO 63130-4899, USA. +Present address: Hint. Engehaldenstrasse 12/20...that Murchison KC is derived from 83 + 8 g bulk meteorite, and we have used this figure for all subse- ...dissolved the meteorite by alternating treatments with 1 M HCl-10 M HF and 6 M HCl ( 10 mL/g meteorite), shaking |  | Merchel, Silke, Ott, Ulrich, Herrmann, Siegfried, Spettel, Bernhard, Faestermann, Thomas, Knie, Klaus, Korschinek, Gunther, Rugel, Georg, Wallner, Anton (2003) Presolar nanodiamonds: faster, cleaner, and limits on platinum-HL. Geochimica et Cosmochimica Acta, 67 (24) 4949-4960 doi:10.1016/s0016-7037(03)00421-6 | Journal (article/letter/editorial) | | 2003 Copyright Ā© 2003 Elsevier Ltd Printed in the USA. All rights reserved 0016-7037/03 $30.00 ā«¹ .00 Pergamon...2000; Ott et al., 2003). 2. EXPERIMENTAL 2.1. Meteorite Samples The new isolation procedure was performed...and 6 mL of HNO3 (65%) are added to the crushed meteorite sample (ā¬500 mg/pressure bomb). After letting...AlCl3 (25%, ā¬5 mL solution per gram of original meteorite). As a final step of the digestion the residue...a diamond sample prepared from the Murchison meteorite by the new procedure was studied by this method |  | | Journal (article/letter/editorial) | | magnetite AGB spinel SN-II spinel CNova spinel AGB chromite Amorphous Al2O3 Eskolaite (Cr2O3) Rutile (TiO2)...(TiO2) Magnetite (Fe3O4) Spinel (MgAl2O4) Chromite (Fe2+Cr2O4) Hibonite [(Ca,Ce)(Al,Ti,Mg)12O19] Other oxides...mineral in stardust (e.g., āSN-II diamondā or āAGB chromiteā). The case of stellar mineralogy is especially...Fe-rich grains, extracted from the Murchison meteorite, contain 0 to 24 atom % Ni. SN-II taenite: Taenite...inclusions in SN-II graphite from the Murchison meteorite (Croat et al. 2003). The majority of grains have |  | | Journal (article/letter/editorial) | | Phases identified include corundum, zircon, rutile, chromite, quartz, and possibly cristobalite, Table 1. All...evidence of sorting plus the presence of zircon, chromite, and rutile - an occurrence common only to sediments...supported by NSF grant EAR 76-01146. THE SHAW METEORITE: EVIDENCE FOR AN IGNEOUS ORIGIN J.L. Berkley...Johnson 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 |  | Ash, R.D, Arden, J.W, Grady, M.M, Wright, I.P, Pillinger, C.T (1990) Recondite interstellar carbon components in the Allende meteorite revealed by preparative precombustion. Geochimica et Cosmochimica Acta, 54 (2) 455-468 doi:10.1016/0016-7037(90)90333-g | Journal (article/letter/editorial) | | interstellar carbon components in the Allende meteorite revealed by preparative precombustion R. D. ASII...from an acid (HF/HCl) residue of the Allende meteorite to reveal two isotopically heavy carbon components...first envisaged from the noble gas record of this-meteorite. I~RODU~ON ALTHOUGH NE-E AND SPROCESSXE have been...and xenon (other than Xe (HL)) in the Allende meteorite. During stepped combustion ZāNe/22Ne reached a...have looked at undemineralised samples of this meteorite @WART et al., 1982a,b,c; HALBOUT et al., 1986) |  | | Journal (article/letter/editorial) | | A19-Al80 (6 Meteoritical Society. 2000. Printed in USA. A19 (2000) Abstracts DHOFAR 007 AND NORTHWEST...(Dhofar 007) and noncumulated (NWA 011). Results: A meteorite shower, 37 pieces weighing a total of 21,270 g...plagioclase. Accessories are metal, troilite, and chromite. Shock features include frachning (melt veins...plagioclase (47.2), Fe, Ni-metal (1.6), troilite (I.]), chromite (~0.5).and phosphates (~0.5). Pyroxene is presented...is 0.39 wt%. Plagioclase is anorthite (A%-9z). Chromite is characterized by Cr/(Cr + Al) = 0.78 and Fd(Fe |  | | Journal (article/letter/editorial) | | fractlonatlon of noble gases m minerals of the Allende meteorite [7,10] Originally it was postulated that planetary...Serpentine and chlorite were identified in Orguei1, Murray, Ivuna and Cold Bokkeveld [14], both serpentine...of distribution coefficients of noble gases for chromite during synthesis and equilibration is possible...meteorites reside in numerous minerals Carbon, chromite, an unidentified mineral "Q", and organic polymer...than the actual time of formation of any given meteorite Additionally, the predominance of minerals stable |  | Ming, Tang, Lewis, Roy S, Anders, Edward, Grady, M.M, Wright, I.P, Pillinger, C.T (1988) Isotopic anomalies of Ne, Xe, and C in meteorites. I. Separation of carriers by density and chemical resistance. Geochimica et Cosmochimica Acta, 52 (5) 1221-1234 doi:10.1016/0016-7037(88)90276-1 | Journal (article/letter/editorial) | | gases, 19-mainly non-colloidal-separates from the Murray and Murchison C2 chondrites were isotopically analyzed...found. It has an abundance of - 1 ppm in the bulk meteorite, combusts at 450-WOāC, and may be associated with...phases that are left behind when the bulk of the meteorite is dissolved in HCl-HF (LEWIS et al., 1975). Pending...made a comprehensive study of separates from the Murray and Murchison C2M chondrites, fractionated by density...done at Milton Keynes. The present paper, covering Murray sample A and Murchison sample G, focuses mainly |  | Qin, L., Nittler, L.R., Alexander, C.M.OāD., Wang, J., Stadermann, F.J., Carlson, R.W. (2011) Extreme 54Cr-rich nano-oxides in the CI chondrite Orgueil ā Implication for a late supernova injection into the solar system. Geochimica et Cosmochimica Acta, 75 (2) 629-644 doi:10.1016/j.gca.2010.10.017 | Journal (article/letter/editorial) | | 5241 Broad Branch RD. NW, Washington, DC 20015, USA Laboratory for Space Sciences and Department of Physics...University, One Brookings Drive, St. Louis, MO 63130, USA b Received 14 June 2010; accepted in revised form...Systematic variations in 54Cr/52Cr ratios between meteorite classes (Trinquier et al., 2007; Qin et al., 2010a)...origin. The variability in bulk 54Cr/52Cr between meteorite classes argues for a heterogeneous distribution...1 Cyclotron RD., MS 70A4418, Berkeley, CA 94720, USA. 1 0016-7037/$ - see front matter Ć 2010 Elsevier |  | | Book (edition) | | The largest groups of new terms have been U.S. county names; rock-formation names (mostly North American);...Thesaurus. These include local geographic terms, U.S. county names, rock-formation names, and fossil names....term must be a name unique to one area. Lincoln County is not assigned coordinates in the Thesaurus, because...North America from the broader terms of Hanover County. There is no reciprocal entry for each broader...counties of the United States; e.g., Chautauqua County may have a broader term Kansas or New York. BX |
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