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| KEILITE, (Fe,Mg)S, THE IRON-DOMINANT ANALOGUE OF NININGERITE MASAAKI SHIMIZUĀ§ Department of Earth Sciences...Museum, 100 Queensās Park, Toronto, Ontario M5S 2C6, Canada ABSTRACT Keilite, (Fe,Mg)S, is a new mineral species...description of niningerite by Keil & Snetsinger (1967) gave chemical analytical data for āniningeriteā in six...chondrites. In three of those six meteorites, namely Abee and Adhi-Kot type EH4 and Saint-Sauveur type EH5...iron-dominant analogue of niningerite. By analogy with synthetic MgS and niningerite, keilite is cubic, with |
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| Composition and origin of clasts and inclusions in the Abee enstatite chondrite breccia Derek W. Sears *'***...inclusion and two dark metal-poor inclusions from the Abee enstatite chondrite. The clasts are heterogeneous...infer that Sc and Mn are located largely in the niningerite ((Fe,Mg)S), V in the troilite (FeS) and rare...K, Na and Al, implying low amounts of metal, niningerite and feldspar. The origin of the dark inclusions... single-stageprocess. 1. Introduction The Abee meteorite is of special interest because it is the largest |
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| within and between the clasts, and the matrix of the Abee enstatite chondrite suggest an impact-based differentiation...within and between the clasts, and the matrix of the Abee enstatite chondrite suggest an impact-based differentiation...within and between the clasts, and the matrix of the Abee enstatite chondrite suggest an impact-based differentiation...Ć Chicoutimi, QuĆ©bec G7H 2B1, CANADA, *mhiggins@uqac.ca Abstract Abee is an enstatite chondrite breccia...enstatite, silica, plagioclase, troilite and niningerite. Clasts are up to 220 mm long and vary in shape |
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| during shock melting and crystallization of the Abee EH-chondrite impact-melt breccia Alan E. RUBIN Institute...AbstractāLiterature data show that, among EH chondrites, the Abee impact-melt breccia exhibits unusual mineralogical...Fe) were produced at the expense of enstatite, niningerite and troilite. Melting of the latter two phases...Fe/Mg and Fe/Mn ratios than in the original niningerite, allowing the crystallization of keilite. Prior...to impact melting, F was distributed throughout Abee, perhaps in part adsorbed onto grain surfaces; after |
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| $17.00 + .00 Pergamon PII S0016-7037(96)00335-3 Abee and related EH chondrite impact-melt breccias ALAN...revisedform September 17, 1996) A b s t r a c t - - T h e Abee EH chondrite is an impact-melt breccia. About 8...magmatically on Earth, occur throughout the rock. Abee experienced two episodes of impact melting with...second impact event produced melt which engulfed the Abee fragments and dark inclusions, primarily digesting...melt to quench. Previously described diamonds in Abee containing typical solar-system isotopic compositions |
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| Anthony J. Why te The Meteorites of Alberta Digitized by the Internet Archive in 2011 http://www...org/details/meteoritesofalbeOOwhyt Meteorites of Alberta Hmm pftjGwB 1 }''>' Ji raTraJ aTBfTraS ... Meteorites of Alberta DQĀ£\ The University of Alberta Press 1 Published by The University of Alberta Press...Edmonton, Alberta, Canada T6G 2E Copyright Ā© 2009, Anthony J. Whyte. Library and Archives Canada Cataloguing...Publication Whyte, Anthony J., 1951- The meteorites of Alberta / Anthony J. Whyte. Includes bibliographical references |
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| Powder Pattern: ZakÅodzie enstatite achondrite meteorite. 2.5859 (100), 1.8285 (35), 1.4929 (18), 1.2929...38.71 16.84 39.11 99.12 44.45 100.00 (1) Abee meteorite; by electron microprobe; corresponds to (Fe0...1:1. Polymorphism & Series: Forms series with niningerite and alabandite. Mineral Group: Galena group....chondrite and achondrite meteorites. Association: Niningerite, enstatite, kamacite, troilite; troilite (or...SiO2 polymorph (ZakÅodzie). Distribution: From the Abee [TL], Adhi-Kot, Saint-Sauveur, LEW 88180, RKP A80259 |
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| Douctas'aNn A. G. PreNr Geological Suruey of Canada, Ottawa, Ontario, Canada Abstract The crystal chemistry of richterite...richterite found in two new meteorite occurrences,as well as that of the original richterite found occurring...occurring in a meteorite, is presented.Microprobe chemical analysis indicates that two of the richterites...richterites, from the iron meteorites Wichita County and Canyon Diablo, are not fully fluorinated; however,...The third richterite, from an enstatite chondrite (Abee), shows a and p parameters lower than those for |
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| high purity, powdered SiO; glass. The Allende meteorite and USGS standard rock BCR1 acted as secondary...\sso\ 1975). Abee data were not used because ol thr. particular heterogeneity of the meteorite (St\~b iā:...SS, St. Sauveur: AK, Adhi Kot; SM. St. Marks; Ab, Abee; Qi, Qingzhen; In, Indarch; 370, Yamato 77370: 601...with petrologic type in two ways. Magnesium in niningerite. Ca in oldhamite, Ti in troilite, Ni in metal...abbreviations as in Fig. 4. Data sources as follows: Abee, Adhi Kot, I&arch and Kota Kota-ti~~ (1968) and |
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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...*Sinoite Pyrrhotite Mackinawite Heazlewoodite *Niningerite Alabandite' *Brezinaite Djerfisherite *Gentnerite...Colomera iron Rare accessory in a few irons, and in Abee (Ce) In chondrules in CcllI Rare accessory Accessory |
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| Properties Chemieal Behavior Thermal Behavior 3.1.5 Niningerite 3.1.6 Unnamed Hexagonal MnS and Manganoan Wurtzite...chondrites; 2200 [2, p. 44] for achendrite (Norton County); and 1850 or 1760 [2, p. 32] for the earth's crust...range and mean of Mn content in individual stone meteorite classes, refer also to [46]. Gmelin Handbock Mn...average weighted Mn content in individual stone meteorite classes (accompanied by a discussion of the results...mean Mn content for the individual parts of a meteorite is given as 300 ppm for the pure meta! (nickel-iron) |
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| gas components in clasts and separates of the Abee meteorite J o h n F. W a c k e r 1 and Kurt Marti 2 I...extinct 129I and suggest lithophilic behavior of 1 in Abee. The U/Th-4He and K-4Ā°Ar data are consistent with...gases observed in the atmosphere of Venus [3-5]. The Abee E4 chondrite is the largest of the enstatite chondrites...results of a comprehensive study, as part of the Abee consortium, of n o b l e gases in cons o r t i u...future publication. 2. Samples and methods The Abee C o n s o r t i u m n o m e n c l a t u r e is used |
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| Aubrites Shock effects Asteroidal parent bodies Meteorite breccias Impact melting Sinoite a b s t r a c...impact-melt globules and spherules. No single meteorite possesses all of these features, although many...history (4.50ā4.54 Ga ago); only one enstatite-rich meteorite (EH4 Bethune) appears to have been impact heated...Enstatite-chondrite impact-melt breccias and impact-melt rocks Abee is the prototypical enstatite-chondrite impact-melt...Fig. 2 of Rubin and Keil, Fig. 1. A slab of the Abee EH-chondrite breccia showing its irregularly shaped |
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| Aubrites represent samples from a third enstatite meteorite parent body. 3. The aubrite parent body may have...Shallowater may be a sample from yet a fourth enstatite meteorite parent body. 6. Shallowater experienced a complex...reassembly. 7. It is unknown why some enstatite meteorite parent bodies melted (the aubrite and Shallowater...Tucson iron meteorite which had previously been thought to be related to the enstatite meteorite clan (Nehru...Kaczaral et al. (1988) suggested that all three meteorite types come from one parent body that was initially |
 | PRZYLIBSKI, Tadeusz A., ZAGOÅ»DÅ»ON, Pawel P., KRYZA, Ryszard, PILSKI, Andrzej S. (2005) The ZakÅodzie enstatite meteorite: Mineralogy, petrology, origin, and classification. Meteoritics & Planetary Science, 40. doi:10.1111/j.1945-5100.2005.tb00424.x | Journal (article/letter/editorial) |
| http://meteoritics.org The Zakā„odzie enstatite meteorite: Mineralogy, petrology, origin, and classification...accepted 21 January 2005) AbstractāThe Zakā„odzie meteorite was found in September 1998, about 40 km west...images, and X-ray diffraction data show that the meteorite is composed of clino- and orthoenstatite, two...crystallized at ā¼580ā600 ĀŗC. Thus, the Zakā„odzie meteorite formed by the nearly complete melting of an enstatite...The structure, composition, and origin of the meteorite and its relation to the parent rock indicate that |
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| which the meteorites experienced. See ted. THE METEORITE CONCENTRATION MECHANISM AT ALLAN HILLS, ANTARCTICA...study of ice ablation and movement as related to meteorite finds. The triangulation chain is composed of...(upwelling) of the ice in the area of highest meteorite concentration approximately balances this yearly...centimeters on the east. Although the mechanism of meteorite transport and concentration is imperfectly understood...during incorporation of the inclusion into the meteorite. In one portion, there is a sharp contact between |
 | Whitby, J.A, Gilmour, J.D, Turner, G, Prinz, M, Ash, R.D (2002) Iodine-Xenon dating of chondrules from the Qingzhen and Kota Kota enstatite chondrites. Geochimica et Cosmochimica Acta, 66 (2) 347-359 doi:10.1016/s0016-7037(01)00783-9 | Journal (article/letter/editorial) |
| (from 53Mn) has been found in sphalerite or niningerite from Qingzhen or in sphalerite from Kota Kota...sulfide minerals (e.g., oldhamite, alabandite, niningerite) rather than silicates. These sulfides are generally...sequence of whole-rock ages is as follows: Indarch EH4, Abee EH4, Kota Kota EH3 (model age), St. Marks EH5, Saint...11-Ma interval between sphalerites within one meteorite was inconsistent with the timescale for accretion...pebble in the Barwell, L6, unshocked chondritic meteorite. Earth Planet. Sci. Lett. 90, 105ā118. Jessberger |
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| the host phases appear to be different from one meteorite group to another. Examples include amorphous olivine...those observed in crush-released gas of this meteorite. toward a 80Kr-rich composition relative to a...21Ne ā 22Ne ratio of 0.89ā0.91 calculated for a meteorite (50 cm in radius) irradiated by galactic cosmic...21Ne ā 22Ne of the bulk Ne speciļ¬cally in this meteorite cannot be accounted for by this value of the modal...accounts for the total recovered mass of this meteorite (43.59 g) (MetBase 2000), and that it lost only |
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| Structural and compositional properties of iron meteorite groups ___________ The geochemical behavior of...ABBREVIATIONS The following abbreviations for the meteorite classes are used throughout the tables and elsewhere;...percent) ; all others (<0.01 percent). A list of meteorite minerals is provided, and a tabulation of elemental...minerals are quartz and aluminosilicates; the common meteorite minerals are anhydrous, whereas hydrated minerals...actual extraterrestrial abundances; irons dominate meteorite finds since they are resistant to weathering and |
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| preserved on heat-treating or forging of specific meteorite specimens, so in most cases recognition of altered...ablation and corrosion crust is different when the meteorite has been reheated by man (Rasgata specimens of...meteorites (Bacubirito). Preservation on an iron meteorite of the ...heating is the best guarantee that the meteorite was never maltreated. On an older iron the corrosion products... structures reflecting the early history of the meteorite and those produced during atmospheric passage |
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| Melt rock samples have been examined from Brent (Canada. 3.8 km, 414 my). Saaksjarvi (Finland. 5 krn, 490...(France. 23 krn, 150-170 my) and East Clearwater (Canada. 23 km, 216 my). In all cases the melt rock bulk...689-690. SOME OBSERVATIONS ON THE MECHANISM OF METEORITE CONCENTRATION IN VICTORIA LAND. ANTARCTICA John...appeared to meet the established criteria for meteorite concentration. Since this field exhibited a step-like...ablation might not be of primary importance in meteorite accumulation. It is suggested that the Allan Hills |
 | | 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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| Konsult International Inc., Willowdale, Ontario, Canada Marilyn Stark Colorado School of Mines, Golden...the total of 4,284 new Terms were United States county and city Terms. Counties and Cities in the United...States Earlier editions had Terms such as Washington County and Portland for counties and cities of the United...for example: Washington County Arkansas and Portland Maine. Each new county Term can now autopost its...to counties was a major task. The scope of U.S. county and city Terms can now be clear even when they |
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| St. Louis MO 63130, USA. The present state of meteorite chemistry as established by Wasson and Kallemeyn...including Mg, Si, Sr. the Earth lies close to CI meteorite as previously established. The estimate of si...ratios in the Earth's mantle. as well as on the meteorite trend permils us to estimate the composition of...difference in their relative abundances among meteorite classes reflects differences in the dust!gas ratio...HIGH-DENSITY INTERSTELLAR GRAPHITE FROM THE MURCHISON METEORITE. S. Amari 1.2, E. Zinner), and R. S. Lewis-, IMcDonnell |
