 | | Journal (article/letter/editorial) | | partially replaced by veinlets and patches of iddingsite, a mixture of smectite clays, iron oxy-hydroxides...and are different in anhydrous silicates and in iddingsite. The alteration assemblages all have heavy oxygen...sources (Chas-E and Chas-S), and fractionated Martian atmosphere. The nakhlites are igneous cumulate...greatest, in the order: MIL03346, NWA817, Y000593, Nakhla Ā¼ Governador Valadares, Lafayette, and NWA998....dissolved olivine and mesostasis glass, and deposited iddingsite and salt minerals in their places. The nakhlites |  | | Journal (article/letter/editorial) | | and Petrology (2003) 77: 271ā277 The Nakhla Martian meteorite is a cumulate igneous rock. Comment on...on āāGlass-bearing inclusions in Nakhla (SNC meteorite) augite: heterogeneously trapped phasesāā (2001)...Stumpfl Summary All the properties of the Nakhla Martian meteorite suggest that it is a cumulate igneous...the geological history of the meteorite. Introduction The Nakhla meteorite is one of the type āSNCā meteorites...2000). Since the first modern petrologic studies of Nakhla (Reid and Bunch, 1975; Bunch and Reid, 1975), it |  | 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...heterogeneously distributed within secondary iddingsite alteration veins and present in a range of morphologies...multiple layers of iddingsite. We also observed microtubular features emanating from iddingsite veins penetrating...Words: MeteoriteāYamato 000593āMarsāCarbon. Astrobiology 14, 170ā181. 1. Introduction T he martian meteorites |  | | Journal (article/letter/editorial) | | com/locate/gca Martian subsurface ļ¬uid pathways and 3D mineralogy of the Nakhla meteorite A.W. Needham...Abstract The three dimensional structure of the Nakhla meteorite has been investigated in order to provide...method of identifying the true orientation of the meteorite while on its host planetary surface. Halite and...eroded, earlier generations of secondary minerals. Nakhla, and by implication the other nakhlite meteorites...rocks is critical to our understanding of the martian climate. If water was widespread in the past billion |  | | Journal (article/letter/editorial) | | IKEDA3, and H. KOJIMA1, 2 1Antarctic 2Department Meteorite Research Center, National Institute of Polar Research...McSween 1985), and they include seven meteorites: Nakhla, Governador Valadares, Lafayette, NWA 817, NWA...l studies of nakhlites have been published for Nakhla, Governador Valadares, and Lafayette (e.g., Prior...(e.g., Misawa et al. 2003; papers in Antarctic Meteorite Research 16), and for MIL 03346 (e.g., McKay and...Yamato nakhlites is somewhat higher than those of Nakhla, Governador Valadares, and Lafayette, and is somewhat |  | Goodrich, Cyrena Anne, Treiman, Allan H., Filiberto, Justin, Gross, Juliane, Jercinovic, Michael (2013) K2O-rich trapped melt in olivine in the Nakhla meteorite: Implications for petrogenesis of nakhlites and evolution of the Martian mantle. Meteoritics & Planetary Science, 48 (12) 2371-2405 doi:10.1111/maps.12226 | Journal (article/letter/editorial) | | in the Nakhla meteorite: Implications for petrogenesis of nakhlites and evolution of the Martian mantle...inclusions in olivine and augite in the Martian clinopyroxenite, Nakhla, for comparison with previously proposed...proposed compositions for the Nakhla (or nakhlite) parent magma. We particularly focused on obtaining accurate...previous studies of melt inclusions in olivine in Nakhla could have been due to unrepresentative sampling...inferred in studies of melt inclusions in augite in Nakhla by experimental rehomogenization. PTLaug was saturated |  | | Journal (article/letter/editorial) | | Aqueous Processes Recorded by Martian Meteorites: Analyzing Martian Water on Earth Laurie A. Leshin1...carbonates, are present at some level in all Martian meteorite subtypes and are especially important in the...waterārock interaction OVERVIEW OF MARTIAN METEORITES The Martian meteorites (also called SNC, for shergottiteā...comprise a group of 36 specimens. Evidence for the Martian origin of these rocks is discussed in the sidebar...samples and review in detail the evidence for a Martian origin. An up-to-date catalog of descriptions of |  | | Journal (article/letter/editorial) | | accepted 02 October 2005) AbstractāAntarctic meteorite Miller Range (MIL) 03346 is a nakhlite composed...that MIL 03346 is part of the same or a similar Martian cumulate-rich lava flow as other nakhlites. However...the petrogenesis of MIL 03346 and the nakhlites (Nakhla, Governador Valadares, Lafayette, Yamato-000593...augite (Ā± olivine, Ā± magnetite) in a shallow-level Martian magma chamber, 3) eruption of the crystal-laden...and to komatiites. INTRODUCTION The Shergotty-Nakhla-Chassigny (SNC) meteorites represent a suite of |  | | Journal (article/letter/editorial) | | 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) ā¼75% augite (core composition...alteration materials include āiddingsiteā associated with olivine (probably Martian), calcite crack fillings...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 |  | Jambon, A., Sautter, V., Barrat, J.-A., Gattacceca, J., Rochette, P., Boudouma, O., Badia, D., Devouard, B. (2016) Northwest Africa 5790: Revisiting nakhlite petrogenesis. Geochimica et Cosmochimica Acta, 190. 191-212 doi:10.1016/j.gca.2016.06.032 | Journal (article/letter/editorial) | | augite cores was never in contact with olivine. Iddingsite is absent. Accordingly, the previous scenarios...the lowest ļ¬ow sampled, based on the lack of iddingsite. Ć 2016 Elsevier Ltd. All rights reserved. Key...INTRODUCTION As of January 2016 there are 162 recorded Martian meteorites, the so-called SNC (S for Shergottites...only 7 meteorites (MIL 03346, NWA 817, Y-000593, Nakhla, Governador Valadares, Lafayette and NWA 998);...2005). Thus nakhlites would have cooled at the Martian surface over short periods of time from 8 to 48 |  | Suga, Hiroki, Suzuki, Keika, Usui, Tomohiro, Yamaguchi, Akira, Sekizawa, Oki, Nitta, Kiyofumi, Takeichi, Yasuo, Ohigashi, Takuji, Takahashi, Yoshio (2021) A New Constraint on the Physicochemical Condition of Mars Surface during the Amazonian Epoch Based on Chemical Speciation for Secondary Minerals in Martian Nakhlites. Minerals, 11 (5) 514 doi:10.3390/min11050514 | Journal (article/letter/editorial) | | Chemical Speciation for Secondary Minerals in Martian Nakhlites Hiroki Suga 1, *,ā , Keika Suzuki 2,ā ...Chemical Speciation for Secondary Minerals in Martian Nakhlites. Minerals 2021, 11, 514. https://doi...February 2021 Accepted: 11 May 2021 Abstract: Iddingsite in Martian nakhlites contains various secondary minerals...formation processes of secondary Fe minerals in iddingsite are unclear because they include carbonates precipitated...Herein, we characterize the carbonate phase of meteorite Yamato 000593 as siderite and Mn-bearing siderite |  | Brian Balta, J., Sanborn, Matthew E., Mayne, Rhiannon G., Wadhwa, Meenakshi, McSween, Harry Y., Crossley, Samuel D. (2017) Northwest Africa 5790: A previously unsampled portion of the upper part of the nakhlite pile. Meteoritics & Planetary Science, 52 (1) 36-59 doi:10.1111/maps.12744 | Journal (article/letter/editorial) | | College Station, Texas 77843ā3148, USA 4 Center for Meteorite Studies, School of Earth and Space Exploration...Davis, Davis, California 95616, USA 6 Monnig Meteorite Collection, School of Geology, Energy, and the...geochemical study of recently discovered Martian meteorite Northwest Africa (NWA) 5790 and use our results...to flow. therein). At present, more than 150 Martian meteorites have been recognized, and these represent...meteorites INTRODUCTION Our current understanding of Martian magmatic processes relies in large part on geochemical |  | | Journal (article/letter/editorial) | | Evidence for sediment contamination in a Martian meteorite Violaine Sautter a,ā, Albert Jambon b , Omar...Spirit and Opportunity missions revealed that Martian soils and rocks are enriched in chlorine (up to...and massive halite trapped within olivine from Nakhla. Here we describe the first extra-terrestrial Cl-rich...2006 Elsevier B.V. All rights reserved. Keywords: Martian evaporitic sediments; Chlorine; chloro-potassichastingsite;...Ī±-particle X-ray spectrometers, operating on the Martian surface since 1997, detected in situ chlorine concentrations |  | KOROCHANTSEVA, Ekaterina V., SCHWENZER, Susanne P., BUIKIN, Alexei I., HOPP, Jens, OTT, Ulrich, TRIELOFF, Mario (2011) 40Ar-39Ar and cosmic-ray exposure ages of nakhlites-Nakhla, Lafayette, Governador Valadares-and Chassigny. Meteoritics & Planetary Science, 46 (9) 1397-1417 doi:10.1111/j.1945-5100.2011.01240.x | Journal (article/letter/editorial) | | Ar-39Ar and cosmic-ray exposure ages of nakhlitesāNakhla, Lafayette, Governador Valadaresāand Chassigny...and wholerock samples of Nakhla, Lafayette, and Chassigny. Our data on Nakhla and Lafayette and recently...approximately 1.1 Ga, which is not related to iddingsite formation. It may have been caused by a medium-grade...for all nakhlites and Chassigny from a conļ¬ned Martian surface terrain (Eugster 2003; Garrison and Bogard...olivine-bearing clinopyroxenite cumulates. Unlike other Martian meteorites, nakhlites have been only moderately |  | Tomkinson, Tim, Lee, Martin R., Mark, Darren F., Dobson, Katherine J., Franchi, Ian A. (2015) The Northwest Africa (NWA) 5790 meteorite: A mesostasis-rich nakhlite with little or no Martian aqueous alteration. Meteoritics & Planetary Science, 50 (2) 287-304 doi:10.1111/maps.12424 | Journal (article/letter/editorial) | | Africa (NWA) 5790 meteorite: A mesostasis-rich nakhlite with little or no Martian aqueous alteration...the find and extends into the interior of the meteorite within veins. The presence of microbial remains...finely crystalline and comprise ~0.003 vol% of the meteorite. dD values of the clay minerals range from 212...be used to distinguish between a terrestrial or Martian origin. As petrographic results are also not definitive...minerals produced by Martian groundwaters are at best very rare within NWA 5790. The meteorite has therefore |  | | Journal (article/letter/editorial) | | extraterrestrial organic material in the Martian meteorite, Nakhla A. J. T. JULL,* J. W. BECK, and G. S....carbonate phases in pristine samples of the martian meteorite, Nakhla (fell 1911AD). We undertook water and...Results indicate that most of the organic matter in Nakhla is released by 6N HCl and there appear to be two...Pillinger, 1994) and could have accumulated on the Martian surface from the accumulation of meteoritic material...suggested that the long residence time of this meteorite on the ice in Antarctica could pose some contamination |  | | Journal (article/letter/editorial) | | nakhlites: Northwest Africa 817, Northwest Africa 998, Nakhla, and Governador Valadares Vincent CHEVRIER1*, Jean-Pierre...studied these sulļ¬des 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 ā 749 ā 802 Nakhla Po Pob, Pyc, Cp Grain size (lm) Pyrrhotite M |  | | Journal (article/letter/editorial) | | elsevier.com/locate/gca Martian ļ¬uid and Martian weathering signatures identiļ¬ed in Nakhla, NWA 998 and MIL...Br, I) of Martian nakhlites Nakhla, NWA 998 and MIL 03346 to determine the presence of Martian hydrous...Neutron-irradiated samples were either crushed and step-heated (Nakhla only), or simply step-heated using a laser or furnace...displays 40 ArXS/36Ar of 1000 ā consistent with the Martian atmosphere. This component was released predominantly...ratios in our Nakhla samples (especially olivine) are consistent with previously analysed Martian weathering |  | Lee, M. R., Tomkinson, T., Mark, D. F., Stuart, F. M., Smith, C. L. (2013) Evidence for silicate dissolution on Mars from the Nakhla meteorite. Meteoritics & Planetary Science, 48 (2) 224-240 doi:10.1111/maps.12053 | Journal (article/letter/editorial) | | for silicate dissolution on Mars from the Nakhla meteorite M. R. LEE1*, T. TOMKINSON2, D. F. MARK2, F...in the Nakhla meteorite are good evidence for the former presence of liquid water in the Martian crust...INTRODUCTION The nakhlite meteorites are samples of the Martian crust and formed approximately 1400 Ma ago either...provide a unique insight into the nature of the Martian hydrosphere because they contain hydrous silicates...(Treiman 2005). The weighted average of 224 Nakhla meteorite dissolution K-Ar and Rb-Sr age determinations |  | | Journal (article/letter/editorial) | | S. RUSSELL:No meteorite is an island D. W. G . SEARS:The exploration of Mars, martian meteorites, and...hydrothermal alteration of a martian analog basalt: Implications for martian meteorites R . CLOCCHIAITI...in barred olivine chondrules from the Allende meteorite J . ZIPFEL.P . SCHERER, B. SPEITEL.G. DREIBUS...ANDE. K. OLSON: Noble gases in iddingsite from the Lafayette meteorite: Evidence for liquid water on Mars...spectroscopy of amphiboles and pyroxenes in the martian meteorites Zagami and Lewis Cliff 88516 S. WEINBRUCH |  | 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 |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (article/letter/editorial) | | nakhlite N. IMAE1, 2* and Y. IKEDA3 1Antarctic Meteorite Research Center, National Institute of Polar Research...After the MIL 03346 magma intruded upward to the Martian surficial zone, the magnesian olivine crystallized...has greatly increased the number of recognized Martian meteorites (e.g., Meyer 2004). The number of recognized...vol%) and other nakhlites (e.g., 10.8 vol% for Nakhla and 12.5 vol% for NWA 817) (Treiman 2005). The...nakhlite, similar in lithology to the previously known Nakhla and Governador Valadares (Mikouchi et al. 2003; |  | | Journal (article/letter/editorial) | | 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 |  | | Journal (article/letter/editorial) | | (~200 ā¦ C). Importantly, recent observations of Martian rocks have indicated that they are evolved magmatically...formed in mafic igneous intrusions, ore deposits, Martian nakhlite meteorites, and banded iron formations...āserpentineā is not the same as the red-yellow āiddingsiteā that forms by weathering of olivine phenocrysts...Body GR22C GreāHis His His 27 Oxide 16 Mars Nakhla His 9 9 7 40.46 0.61 0.04 43.36 1.09 0.04...gaps. 3.2. Ores, Banded Iron Formation and Nakhla Meteorite A review of the literature shows that the |
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