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| Printed in USA Water soluble ions in the Nakhla martian meteorite DOUGLAS J. SAWYERI, MICHAELD. M c G E...Road, Scottsdale, Arizona 85256, USA 2Center for Meteorite Studies, Arizona State University, Tempe, Arizona...from the martian achondrite Nakhla and three asteroidal achondrites are reported. The Nakhla sample contains...been in contact with a seawater-like brine on the martian surface. INTRODUCTION An analysis of the total...(Canepa, 1985) showed that those identified as martian had a higher C1 content than the other achondrites |
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| sources (Chas-E and Chas-S), and fractionated Martian atmosphere. The nakhlites are igneous cumulate...greatest, in the order: MIL03346, NWA817, Y000593, Nakhla ¼ Governador Valadares, Lafayette, and NWA998....compositions, magma sources, and alteration by Martian water. I will try to place the nakhlites in a reasonable...only three. Nakhla, the meteorite eponym for the group, was observed to fall in northern Egypt in 1911....Antarctica, but far from the Yamato samples (Antarctic Meteorite Newsletter, 2004). The histories of the other |
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| Water-extractable and exchangeable phosphate in Martian and carbonaceous chondrite meteorites and in planetary...planetary materials, represented by the Mars meteorites Nakhla, Dar al Gani 476 (DaG 476), Elephant Morraine 79001...readily extracted by water, up to 15 mg kg⫺1 in Nakhla and DaG 476 and 38 mg kg⫺1 in EETA 79001, while...(E⬎3m). The IEK results show that the DaG 476 Mars meteorite and terrestrial analogs have low P-fixing capacities...51.6%, and 43.9 to 90.4% in the DaG 476 Mars meteorite, Allende, and Murchison, respectively. The results |
 | White, Lauren M., Gibson, Everett K., Thomas-Keprta, Kathie L., Clemett, Simon J., McKay, David S. (2014) Putative Indigenous Carbon-Bearing Alteration Features in Martian Meteorite Yamato 000593. Astrobiology, 14 (2) 170-181 doi:10.1089/ast.2011.0733 | Journal (article/letter/editorial) |
| Indigenous Carbon-Bearing Alteration Features in Martian Meteorite Yamato 000593 Lauren M. White,1 Everett K...of indigenous carbonaceous matter in the martian meteorite Yamato 000593. The carbonaceous phases are...Words: Meteorite—Yamato 000593—Mars—Carbon. Astrobiology 14, 170–181. 1. Introduction T he martian meteorites...meteorites represent samples of the martian regolith that were ejected from the planet as a consequence...meteorites indicate they formed across much of the martian geological record, from as recently as 165 million |
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| online at http://meteoritics.org Petrology of Martian meteorite Northwest Africa 998 Allan H. TREIMAN1* and...Mars. This 456gram, partially fusion-crusted meteorite consists of (by volume) ∼75% augite (core composition...“iddingsite” associated with olivine (probably Martian), calcite crack fillings, and iron oxide/hydroxide...than 45 known unpaired Martian meteorites are seven nakhlite specimens (Nakhla, Lafayette, Governador...Treiman 2005). The nakhlites are distinctive among Martian meteorites because they have experienced less |
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| meteorites from Mars in the world's collections. The martian meteorites differ from meteorites from the asteroid...years; evidence for a martian origin rests on the presence of trapped martian atmospheric gases within...the specimens. The first three martian meteorites, Shergotty, Nakhla and Chassigny, gave their names...as 'martian'. The meteorites are all igneous, most are shocked and many show evidence of martian aqueous...aqueous activity. Study of martian meteorites is a valuable complement to spacecraft observations of Mars |
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| nakhlites: Northwest Africa 817, Northwest Africa 998, Nakhla, and Governador Valadares Vincent CHEVRIER1*, Jean-Pierre...studied these sulfides in Northwest Africa (NWA) 998, Nakhla, Governador Valadares, and NWA 817 with optical...Valadares; more massive, true intercumulus blebs in Nakhla and NWA 998. These nakhlites also show evidence...cumulate textures derived from the shallow level Martian crust (Harvey and McSween 1991; Treiman et al....NWA 817 Po Po 0.04 <0.01 Y-000593 ⁄ 749 ⁄ 802 Nakhla Po Pob, Pyc, Cp Grain size (lm) Pyrrhotite M |
 | Sautter, V, Barrat, J.A, Jambon, A, Lorand, J.P, Gillet, Ph, Javoy, M, Joron, J.L, Lesourd, M (2002) A new Martian meteorite from Morocco: the nakhlite North West Africa 817. Earth and Planetary Science Letters, 195 (3) 223-238 doi:10.1016/s0012-821x(01)00591-x | Journal (article/letter/editorial) |
| 223^238 www.elsevier.com/locate/epsl A new Martian meteorite from Morocco: the nakhlite North West Africa...in the Sahara (Morocco) by meteorite hunters in November 2000. The meteorite is an unbrecciated, medium-grained...clear evidence for a Martian origin. The incompatible trace element pattern as in Nakhla displays a strong...titanomagnetite; alteration 1. Introduction The Martian meteorites described so far range from basaltic...planetary body, probably Mars (e.g. [4]). Among the 17 Martian meteorites described so far, the most common are |
 | Rost, Detlef, Stephan, Thomas, Greshake, Ansgar, Fritz, Jörg, Weber, Iris, Jessberger, Elmar K., Stöffler, Dieter (2009) A combined ToF-SIMS and EMP/SEM study of a three-phase symplectite in the Los Angeles basaltic shergottite. Meteoritics & Planetary Science, 44 (8) 1225-1237 doi:10.1111/j.1945-5100.2009.tb01219.x | Journal (article/letter/editorial) |
| frequently found rimming pyroxene in the Martian meteorite Los Angeles. This assemblage is usually interpreted...Los Angeles is one of the most differentiated Martian meteorites, i.e., it is rich in incompatible elements...olivine, and silica have been also found in the Martian meteorites Queen Alexandra Range (QUE) 94201 (McSween...Shergotty (Aramovich et al. 2002). In these studies, Martian three-phase symplectites have been interpreted...pyroxenoid precursor. In their study of lunar meteorite MIL 05035, Liu et al. (2009) suggested that shock |
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| cooling rate is ≤72 °C h−1. Textural analysis of meteorite MIL 03346 reveals at least two distinct populations...that experiments using basalt patterned on other martian meteorites are applicable to interpreting the thermal...fusion experiments on portions of the MIL 03346 meteorite (Rutherford and Hammer 2008). Pertinent matrix...generally accepted to 144 J. E. Hammer Fig. 1. Meteorite classification diagram (McSween 2007) showing...augite fractionation. Position of Chassigny and meteorite fields from McSween (2007). represent growth |
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| Society, 1999 Printed in USA. Formation of a martian pyroxenite: A comparative study of the nakhlite...composition of the nakhlites, a group of pyroxenitic martian meteorites with young ages, presents an opportunity...(shergottites, nakhlites, and Chassigny), whose martian origin seems well-established (e.g.,McSween, 1994)...one study to evaluate heterogeneity within each meteorite and between the three nakhlites. We also describe...sill. The Nakhlites The three nakhlite meteorites-Nakhla, Lafayette, and Govemador Valadares-are all medium-grained |
 | Sharp, Zachary, Williams, Jeffrey, Shearer, Charles, Agee, Carl, McKeegan, Kevin (2016) The chlorine isotope composition of Martian meteorites 2. Implications for the early solar system and the formation of Mars. Meteoritics & Planetary Science, 51 (11) 2111-2126 doi:10.1111/maps.12591 | Journal (article/letter/editorial) |
| 1111/maps.12591 The chlorine isotope composition of Martian meteorites 2. Implications for the early solar...determined the chlorine isotope composition of 16 Martian meteorites using gas source mass spectrometry on...This most likely represents the original bulk Martian Cl isotope value. The other endmember is a 37Cl-enriched...space has resulted in a high d37Cl value for the Martian surface, similar to what is seen in other volatile...process that could lower the d37Cl value of the Martian mantle to 4 to 3&. Instead, we propose that this |
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| relative values of halogen and water fugacities in Martian, lunar and terrestrial basalts, accounting for...mantle magma sources. Our analysis shows that the Martian mantle parental to basaltic SNC meteorites was...Ma. The water and halogens found in present-day Martian surface rocks have thus resided in the planet’s...fluorapatites whereas Martian apatites have approximately equal amounts of fluor- and chlorapatite components. The...The lunar and Martian mantles would thus appear to be more homogeneous than the terrestrial mantle in |
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| 1089/ast.2013.1069 A Conspicuous Clay Ovoid in Nakhla: Evidence for Subsurface Hydrothermal Alteration...ovoid structure has been discovered in the Nakhla martian meteorite, made of nanocrystalline iron-rich saponitic...amorphous material. The ovoid is indigenous to Nakhla and occurs within a late-formed amorphous mesostasis...structure. There is evidence that the parent rock of Nakhla has undergone a shock event from a nearby bolide...explanation for the formation of the ovoid structure in Nakhla, and although compelling evidence for a biotic |
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| Accepted Manuscript Geochemistry of Martian basalts with constraints on magma genesis Justin Filiberto...article as: Justin Filiberto , Geochemistry of Martian basalts with constraints on magma genesis, Chemical...pertain. ACCEPTED MANUSCRIPT Geochemistry of Martian Basalts with Constraints on Magma Genesis Justin...CR Martian rocks has greatly increased. Rocks on the surface of Mars are older than most Martian US...alkalis, and lower MgO contents). Recent Martian meteorite discoveries (NWA 7034, NWA 7635, and NWA |
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| . . . . . . . . . . . . . . . . . 00 2.9.13. Martian meteorites . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . 00 2.10.28. Martian meteorites . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . 00 2.12.10. Martian meteorites . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . 00 2.14.9. Martian meteorites . . . . . . . . . . . . . . . . . ....the HED parent asteroid (probably Vesta); and martian and lunar meteorites formed as igneous rocks on |
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| ] suggested the possibility of the presence of martian life based on observations of several characterisitc...these magnetite and pyrrhotite grains in the martian meteorite are of magnetotactic bacterial origin. A6...relationship between brown shock glasses and host rock in martian peridotites such as ALH 77005 [5]. The original...obtained from NASA; additional chips from each meteorite were examined petrographically at the Smithsonian...iron in a weathered sample of an equilibrated meteorite, with weight gains predicted for an unweathered |
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| and on druse clinopyroxene from the D’Orbigny meteorite. The average structure refinement of the studied...721-723. [7] Tonui E. et al. (2002) Antarctic Meteorite Research 15:38-58. [8] Alexander C.M.O'D. et al...fractionation trends are observed in different meteorite groups that are likely linked either with thermal...3:65.7 respectively. The parent bodies of these meteorite types inherited the isotopic heterogeneities from...have not yet discovered a separate pl-px-ol-rich meteorite to represent the missing complementary member |
