 | Britvin, S. N., Bogdanova, A. N., Boldyreva, M. M., Aksenova, G. Y. (2008) Rudashevskyite, the Fe-dominant analogue of sphalerite, a new mineral: Description and crystal structure. American Mineralogist, 93 (5) 902-909 doi:10.2138/am.2008.2582 | Journal (article/letter/editorial) | | sphalerite, is an accessory phase in the Indarch meteorite (enstatite chondrite, EH4). It occurs as xenomorphic...5–120 µm in size, associated with clinoenstatite, kamacite, troilite, oldhamite, niningerite, schreibersite...Rudashevskyite, new mineral, sphalerite, wurtzite, FeS, meteorite, enstatite chondrite, black smokers Introduction...characterized (Fe,Zn)S sulfide (Mineral K) in the Indarch meteorite (enstatite chondrite, EH4). Further investigations...sphalerite, based on a material from the Indarch meteorite (Mineral K of Ramdohr 1963, 1973). The new |  | | Journal (article/letter/editorial) | | Mineral Concentrates from the Indarch O. A. SCHAEFFER AND I•. Meteorite W. STOENNER Department o/Chemistry...mineral separates from the enstatite chondrite Indarch. A cosmic ray exposure of 11 million years was...indication of a higher temperature during the time the meteorite was exposed to cosmic rays than during its preceding...early history or the Xe •2• is not associated in Indarch with I or Te. INTRODUCTION Rare gas contents...of (--200 +325) sieve size contained40% of the meteorite and the other of (--325) size con- SEPARATION |  | | Journal (article/letter/editorial) | | Among the samples studied were the meteorites Indarch and Hoba, a chondrite and an iron, respectively...km/set, 6 ,u silicon carbide particles caused Indarch to erode at a rate of about 3 x 10m4cm/J/cm2 of...single crystal, and additional bombardment of Indarch by 7 ,u iron particles, yielded erosion rates that...least two orders of magnitude smaller than that of Indarch. These results and analogous results from the literature... On the other hand, FISHER (1966) proposed a meteorite generation model that employs the mechanism of |  | | Report (issue) | | 4/m 3 2/m. As grains intimately intergrown with kamacite and troilite; grains may contain oriented exsolution...exsolution lamellae of troilite and minute grains of kamacite. Physical Properties: Optical Properties: R: n... Total 98.14 98.13 100.00 44.45 (1) Indarch meteorite; by electron microprobe, corresponds to (Mg0...09 Ca0.02 Cr0.02 )Σ=1.05 S1.00 . (2) Kota-Kota meteorite; by electron microprobe, corresponds to (Mg0.66...Association: “Nickel-iron” (kamacite), troilite. Distribution: In the Indarch [TL], St. Marks [TL], Kota-Kota |  | | Journal (article/letter/editorial) | | detail in only a few stony meteorites,be- each meteorite individually, even though each causewith earlier...eraIshavebeenidentified:Most common are iron (kamacite)with variableNi content a• Fe-Ni solidsolutions(taenite)...abundantin a few highly reduced meteorites (e.g., Indarch). Another mineral having an hexagonallayer structure...Hesston Vigarano Holbrook Homestead Hvittis Indarch Jelica Kaba Kandahar Waconda Walters Warrenton...nickel with a consequent decrease in the amount of kamacite. Continued introduction of sulfur leads to |  | | Journal (article/letter/editorial) | | (People's Republic of China). Two fragments of the meteorite were recovered, weighing respectively 600 g and...meteorites Meteorite Type Paragenesis References Qingzhen EH3 Albite, tridymite, kamacite, troilite...tridymite are also present as inclusions in the kamacite of metal-sulfide assemblages. We have recently...metal-sulfide assemblages as inclusions within kamacite or sulfide and is often associated with variable...graphite nodules of the Wichita County IA iron meteorite. Other coexisting phases are olivine (F099), plagioclase |  | | Report (issue) | | 57.2 42.8 60.06 39.94 100.0 100.00 (1) Indarch meteorite; by scanning transmission electron microscope...metamorphism. Occurrence: Association: Diamond, kamacite, perryite, schreibersite, troilite, spinel, chromite...chromite, hibonite, rutile. In the Indarch enstatite chondrite meteorite, and the Inman, Adrar, and Tieschitz |  | | Journal (article/letter/editorial) | | two olivine-bearing chondrules in the Kota Kota meteorite (BM1905, 355) A. Pale violet-brown glass (finely...cleavage and partings). Opaque particles include kamacite and troilite Olivine also occurs as inclusions...parallel orientation. The opaque grains are mainly kamacite. The scale bar is 0.5 mm 1ong. been identified...stone), but is scarcein South Oman and very rare in Indarch. Each stone also contains small amounts of one...crushedsamples),but only tridymite was recognizedin Indarch. A detailed investigationof the distribution of |  | | Journal (article/letter/editorial) | | 112+ 1712 216 130 from Ambrosia Lake uranium district.. . Barite-quartz phase in the FireCarbonate,...(abs.) . 1563 Cameron, E. N. with Ramsden, A. R. Kamacite and taenite superstructures and a metastable tetragonal...tetragonal phase in iron meteorites 37 ,,Kamacite and taenite superstructuresand a metastable tetragonal..., Jr. Roedderite, a new mineral from the Indarch meteorite.. a n d l t o , J . .. and Ito, J. Hendricksite..., Jr. Roedderite, a new mineral from the Indarch meteorite. . Fuerstenau, D. W. with Burns, TO VOLUME |  | Ma, C., Beckett, J. R., Rossman, G. R. (2012) Buseckite, (Fe,Zn,Mn)S, a new mineral from the Zaklodzie meteorite. American Mineralogist, 97 (7) 1226-1233 doi:10.2138/am.2012.4110 | Journal (article/letter/editorial) | | (Fe,Zn,Mn)S, a new mineral from the Zakłodzie meteorite Chi Ma,* John R. Beckett, and George R. Rossman...sinoite, Zakłodzie meteorite, enstatite achondrite Introduction The Zakłodzie meteorite, which is a moderately...During a nano-mineralogy investigation of this meteorite, a new Fe-dominant monosulfide mineral, (Fe,Zn...and survival for the evolution of the Zakłodzie meteorite. Preliminary results are given in Ma et al. (2012)...University, for his many contributions to mineralogy, meteorite research, and transmission electron microscopy |  | | Journal (article/letter/editorial) | | 451. Ascension Island, vlasovite, 233. Assisi, meteorite, description, mineralogy, 595. Astrophyllite,...The metallographic structure of the Kodaikanal meteorite, 687 ; The metallographic structure of 1190...see potassium-barium feldspars, 914. Barwell meteorite, anal., 101. Baryte, etching of, 750. Basalt,...and ganophyllite, 893; celsian, 914. Bencubbin meteorite, descr., descr, and anal. of enclaves in, bearing...formanite, topaz, rubellite, 50. Billygoat Donga meteorite, description, 694. Binnenthal, Valais, Switzerland |  | | Journal (article/letter/editorial) | | 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...=enstatite achondrites Name Formula Occurrence Kamacite a-(Fe,Ni) Taenite Copper Diamond Graphite 'Y-(Fe...irons, stony-irons, and most chondrites As for kamacite Common as an accessory Present in ureilites Common |  | | Journal (article/letter/editorial) | | isotope fractionation metal silicate enstatite meteorite Bulk Silicate Earth Earth's core formation a...differentiation. They are the only primitive meteorite group with oxygen isotope compositions and metal-to-silicate...energies of reaction. The meteorites Abee and Indarch are classified as EH4 chondrites. Abee is a breccia...consisting of equal proportions of clasts and matrix, kamacite nodules, and sulfides. Due to its brecciated nature...mineral abundances exist in different areas of the meteorite (total silicates ∼30 to 65 wt.%, total metal ∼20 |  | | Journal (article/letter/editorial) | | microscopist, Gustav Tschermak, and the outstanding meteorite collection of that day, the Vienna collection...meteorites. Table 1 traces the development of meteorite mineralogy over the following seventy years. It...extracted sulfur with alcohol from the Cold Bokkeveld meteorite, and later investigators extracted it from other...MrNnnar-sor Mnrronttos, Ur :ro 1955 Irormula Mineral Kamacite Taenite Copper Diamond Graphite Moissanite Cohenite...weathering. In 1955, therefore, to specializein meteorite mineralogy might well have beenconsideredthe refugeol |  | | Journal (article/letter/editorial) | | processes in the parent body. The metal of aubrites is kamacite with <0.1 to 2.5 wt % Si, which occurs as inclusions...than that of Co, which is concentrated mostly in kamacite. Metal nodules in the Norton County aubrite are...coefficients of the elements between certain meteorite components. In this particu lar instance, the...local variations in fO2 in the parent body of the meteorite [32, 33] have not any significantly modified the...concentra tions of elements in the Fe,Ni phase of the meteorite (Tables 1, 2) testify to the redistribution of |  | | Journal (article/letter/editorial) | | www.elsevier.com/locate/gca Melting of the Indarch meteorite (EH4 chondrite) at 1 GPa and variable oxygen...(HT) investigation of an enstatite chondrite (Indarch). Four series of experiments exploring various...piston–cylinder apparatus using the EH4 chondrite Indarch. We show that temperature and redox conditions...important effects on the phase equilibria of the meteorite: the solidus and liquidus temperatures of the... which are the least Melting of the Indarch (EH4) meteorite at 1 GPa depleted in the highly volatile |  | | Journal (article/letter/editorial) | | alert to the potential discovery of a genuine meteorite from Mercury which, superficially, should resemble...and, if true, a meteorite from Mercury should not resemble any currently known meteorite type. & 2010 Elsevier...1940; Keil et al., 1989), LAP 02233 (Antarctic Meteorite Newsletter, 2003, 2004), LAP 03719 (McCoy et al...classified as aubrites that are actually other meteorite types. Table 1 Ranges and average modal (vol%)...Average Enstatite Plagioclase Diopside Forsterite Kamacite Troilite 74.8–97.5 0.3–16.2 0.2–8.1 0.3–10.0 |  | | Journal (article/letter/editorial) | | 0016-7037/Ó 2018 Elsevier Ltd. All rights reserved. meteorite classes have been previously measured and the...cores of differentiated asteroid-sized bodies. The meteorite data indicates that these metallic cores have...Fe isotope compositions of several planets and meteorite groups exhibiting the variability among different...centimeter-sized nodules. The metal is predominantly kamacite and has sulfide and silicate inclusions concen-...gray band corresponds to a specific pallasite meteorite. The studies attempt to measure the equilibrium |  | Fazio, Agnese, D'Orazio, Massimo, Folco, Luigi, Gattacceca, Jérôme, Sonzogni, Corinne (2013) The extremely reduced silicate-bearing iron meteorite Northwest Africa 6583: Implications on the variety of the impact melt rocks of the IAB-complex parent body. Meteoritics & Planetary Science, 48 (12) 2451-2468 doi:10.1111/maps.12231 | Journal (article/letter/editorial) | | The extremely reduced silicate-bearing iron meteorite Northwest Africa 6583: Implications on the variety...Africa (NWA) 6583 is a silicate-bearing iron meteorite with Ni = 18 wt%. The oxygen isotope composition...relationship between several iron meteorite groups and known stony meteorite groups. A possible genetic link...composition of a unique, silicate-bearing iron meteorite named Northwest Africa 6583 (Meteoritical Bulletin...data, we establish its relationship with a known meteorite group, we define its petrogenesis (including its |  | | Journal (article/letter/editorial) | | groups. Enstatite is the major silicate mineral. Kamacite is Si-bearing and the enstatite chondrites contain...compositions. EH3 chondrites have >1.8 wt.% Si in their kamacite and contain the monosulfide niningerite (MgS),...chondrites have less than 1.4 wt.% Si in their kamacite and contain the monosulfide alabandite (MnS). The...Graphite Greigite Heideite Hibonite Idaite K-feldspar Kamacite Keilite Lawrencite Melilite Millerite Nepheline...considerably larger than the other chondrules in the meteorite. (h) Backscattered electron (BSE) image of a chondrule |  | | Book (edition) | | masked by strong internal reflections strong Kamacite strong, yellow, orange, red, brown lamellar...grey); Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Sachsen, Germany (sample: Seifert);...quartz (dark grey); New Bullfrog Mine, Bullfrog District, Nye Co., Nevada, USA (sample: Witzke); PPL If...placers Kaietur Falls, Potaro River, Kangaruma District, Potaro-Siparuni Region, Guyana Chalcopyrite,... Zone Breches N-S, 49-51 m, Bleida, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ |  | Udry, Arya, Wilbur, Zoë E., Rahib, Rachel R., McCubbin, Francis M., Vander Kaaden, Kathleen E., McCoy, Timothy J., Ziegler, Karen, Gross, Juliane, DeFelice, Christopher, Combs, Logan, Turrin, Brent D. (2019) Reclassification of four aubrites as enstatite chondrite impact melts: Potential geochemical analogs for Mercury. Meteoritics & Planetary Science, 54 (4) 785-810 doi:10.1111/maps.13252 | Journal (article/letter/editorial) | | History, Smithsonian Institution, Washington, District of Columbia 20560, USA 5 Department of Earth and...addition, investigation of members of the enstatite meteorite clan allow us to distinguish between the various...than aubrites based on prior studies of both meteorite groups (Keil 1968; Watters and Prinz 1979; Brett...and metal phases within the four investigated meteorite samples were measured using the JEOL JXA-8900...Bunch et al. (2008) previously reported observing kamacite [Fe,Ni metal], niningerite [MgS], perryite [(Ni |  | | Journal (article/letter/editorial) | | impact melt) relative to the Shallowater reference meteorite (4562.3 ± 0.4 Ma, all errors are 1r). I–Xe ages...cooling. The enstatite chondrites Abee (EH4), Indarch (EH4), EET 96135 (EH4/5) and St. Marks (EH5) encompass...chondrites. Other important minerals are plagioclase, kamacite (with several ⇑ Corresponding author. Tel.: +49...substantial variation even within an individual meteorite (e.g. Birck and Allégre, 1988; Wadhwa et al....53 Mn/55Mn-ratios in sulfides within individual meteorite specimens of EL 3 chondrites that are equivalent |  | | Journal (article/letter/editorial) | | systematic relationship between carbon content and meteorite group or petrologic type. Wholerock 013C values...ofE-chondrites shows them to be unique amongst meteorite groups, with values close to those of the bulk...first 013C value for any E-chondrite (-12.9%0 in Indarch). Subsequent measurements on EH4's have yielded...heterogeneity in nitrogen distribution within a single meteorite has been demonstrated by THIEMENS and CLAYTON...relative to other nitrogen-bearing minerals in this meteorite. No nitrogen isotope determinations have been |  | | Journal (article/letter/editorial) | | officially classified as a lodranite, but this meteorite has transitional features between acapulcoites...et al. 2006). Iron Meteorite Analysis About 20–50 mg pieces of each iron meteorite was put in a polytetrafluoroethylene...Primitive Achondrite Analysis Several chips of each meteorite weighing ~300 mg were ground into small grains...and literature data, so we suggest that this meteorite originated from a sizable metal body that experienced...winonaites and IAB iron meteorites. IAB iron meteorite data are from Wasson and Kallemeyn (2002). MG |
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