 | | Report (issue) | | 117(1)° Z = 2 X-Ray Diffraction Pattern: Indarch meteorite. 2.057 (100), 2.646 (92), 1.716 (78), 5.251...99.13 (2) 44.52 36.10 19.38 . 100.00 (1) Indarch meteorite; average electron microprobe analysis; corresponds...brezinaite. Occurrence: From an EH4 enstatite chondrite meteorite. Probably formed from daubréelite at...Distribution: From the Indarch meteorite, fell on 7 April 1891 at Shusha, Azerbaijan. Name: Honors Michael...extraterrestrial materials, including enstatite chondrites. Type Material: Meteorite collection, Division of Geological |  | | Report (issue) | | c = 14.269(4) Z=2 X-ray Powder Pattern: Indarch meteorite; essentially identical with eifelite. 3.570...)§=4:66 (Si 11:99 Al 0:01 )§=12:00 O 30 : (2) Indarch meteorite; by electron microprobe, average of six analyses;...Germany); an accessory mineral in an enstatite chondrite (Indarch meteorite). Association: Hematite, tridymite...quartz, sillimanite (Bellerberg volcano, Germany); enstatite, clinoenstatite, troilite, nickel-iron, schreibersite...tridymite, oldhamite, glass (Indarch meteorite). Distribution: In the Indarch, Witchita County, and Canyon |  | | Journal (article/letter/editorial) | | Mineral Concentrates from the Indarch O. A. SCHAEFFER AND I•. Meteorite W. STOENNER Department o/Chemistry...measured for mineral separates from the enstatite chondrite Indarch. A cosmic ray exposure of 11 million...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 |  | 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...new mineral, sphalerite, wurtzite, FeS, meteorite, enstatite chondrite, black smokers Introduction Sphalerite...(Fe,Zn)S sulfide (Mineral K) in the Indarch meteorite (enstatite chondrite, EH4). Further investigations...solid solutions are typical accessory minerals in enstatite chondrites (Buseck and Holdsworth 1972; Kissin...sphalerite, based on a material from the Indarch meteorite (Mineral K of Ramdohr 1963, 1973). The new |  | | Journal (article/letter/editorial) | | mineral, roedderite, from the Ind,arch (enstatite chondrite) meteorite. Roedderite is essentially (K2O, NasO):5MgO:12SiOr...within graphite nodules in the octahedriteiron meteorite,Wichita County (USA), a new occurrence shows a...from Japan (both measured by the writer), the Indarch roedderite, Roedder's original pattern of KzO:5MgO:12SiO2...Poworn DmlnacrroN D.crl Roedderite, W'ichila Co. meteorite 10 50 10 10 80 90 80 5 90 80 5 30 100 10 10 90...069 2.014 10 1 918 5 JO/ Roeclderite, Indarch meteorite (from Fuchs, 1966 and Fuchs et al., 1966) |  | 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...group discovered in Zakłodzie, and an ungrouped enstatite-rich achondrite. The type material occurs as single-crystal...(4–20 µm in size) in contact with two or more of enstatite, plagioclase, troilite, tridymite, quartz, and...liquids produced during impact melting of an enstatite-rich rock. Keywords: Buseckite, (Fe,Zn,Mn)S, new...sinoite, Zakłodzie meteorite, enstatite achondrite Introduction The Zakłodzie meteorite, which is a moderately |  | | Journal (article/letter/editorial) | | www.elsevier.com/locate/gca Melting of the Indarch meteorite (EH4 chondrite) at 1 GPa and variable oxygen...temperature (HT) investigation of an enstatite chondrite (Indarch). Four series of experiments exploring...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...carbonaceous chondrites, ordinary chondrites and enstatite chondrites (Krot et al., 2003). The Earth’s mantle |  | | Report (issue) | | 57.2 42.8 60.06 39.94 100.0 100.00 (1) Indarch meteorite; by scanning transmission electron microscope...79N4.21' (2) Si3N4. A very rare component of enstatite chondrite and chondrite meteorites, probably formed...chromite, hibonite, rutile. In the Indarch enstatite chondrite meteorite, and the Inman, Adrar, and Tieschitz...Nierite (Si3N4)· a new mineral from ordinary and enstatite chondrites. Meteoritics, 30, 387-398. (2) (1996) |  | | Report (issue) | | 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...Occurrence: In less extensively metamorphosed enstatite chondrite meteorites. Association: “Nickel-iron”...“Nickel-iron” (kamacite), troilite. Distribution: In the Indarch [TL], St. Marks [TL], Kota-Kota [TL], Qingzhen...Yamoto 691, Yamoto 74370, South Oman, Kaidun, etc. enstatite chondrite meteorites. Name: In honor of Harvey |  | | Journal (article/letter/editorial) | | VOL 52. SEPTEMBER_OCTOBER. 1967 OLIVINE IN ENSTATITE CHONDRITES R. A. BrNNs, Deparlment oJ Geology...olivine has hitherto been consideredabsent from enstatite chondrites.In a recent review of the mineralogy...(1966) noted that many stones, having orthorhombic enstatite and sodic plagioclaseas their main silicate constituents...new investigation of thoroughlv recrystallized enstatite chondrites represented in the British Museum (Natural...been attained during recrystallization. Three enstatite chondritesin the British Museum collection may |  | | Journal (article/letter/editorial) | | accessory amounts in the highly unequilibrated enstatite chondrite, Qingzhen. It occurs in association...planetary processes. INTRODUCTION The Qingzhen enstatite chondrite fell on September 13, 1976 in Weicheng...(People's Republic of China). Two fragments of the meteorite were recovered, weighing respectively 600 g and...Qingzhen to be the first highly unequilibrated (EH3) enstatite chondrite available for study (Rambaldi et al...Huss et al., 1981; Rambaldi and Wasson, 1981). Enstatite chondrites are characterized by an assemblage |  | | Journal (article/letter/editorial) | | NorthernIreland Lead-lead age of the Bondoc meteorite ROYAL R. M&SFWLL Jet Propulsion Laboratory, California...concentration of lead in a portion of the Bondoc meteorite W~JX determined by the isotopic dilution technique...0.005 ppm. Isotopic ratios of the lead in the meteorite were found to be Pb*oe/Pb204 = 20.11, Pb807/Pbso4...present U89s/Uasr ratio in this meteorite is 137.7. THE BONDOC meteorite was recovered a few years ago...Intrigued by the unique features of the Bondoc meteorite, the present writer obtained pieces of it for |  | | 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 |  | | Journal (article/letter/editorial) | | Variations of the isotopic composition of sulfur in enstatite and ordinary chondrites XIA GAO* and MARK H. THIEMENS...analyses (6335, 6345, and ~365) of bulk ordinary and enstatite chondrites demonstrate that systematic variations...+ 0.07, -0.02 ___0.06, and 0.49 + 0.16%0 for enstatite and ordinary and carbonaceous chondrites, respectively...isotopic difference for the chondrules from the bulk meteorite are noted for both meteorites. INTRODUCTION 1979)...measurements ((~335, (~348, and (~36S) for ordinary and enstatite chondrites. Separations of sulfur-containing phases |  | RUSSELL, SARA S., OTT, ULRICH, ALEXANDER, CONEL M. O'D., ZINNER, ERNST K., ARDEN, JOHN W., PILLINGER, C. T. (1997) Presolar silicon carbide from the Indarch (EH4) meteorite: Comparison with silicon carbide populations from other meteorite classes. Meteoritics & Planetary Science, 32 (5) 719-732 doi:10.1111/j.1945-5100.1997.tb01557.x | Journal (article/letter/editorial) | | from the Indarch (EH4) meteorite: Comparison with silicon carbide populations from other meteorite classes...Grains) Abstract-Presolar Sic from the Indarch (EH4) meteorite was studied by scanning electron microscopy...compositions of the major elements in S i c from Indarch and Murchison are similar. Stepped combustion data...both meteorites of -+ 1430%0. Silicon isotopes in Indarch and Murchison S i c also compare well. In some...meteorites are different. Morphologically, S i c from Indarch appears finer grained than S i c from Murchison |  | | Journal (article/letter/editorial) | | size, and chemical resistance from Qingzhen (E3), Indarch (E4), Abee and Saint Sauveur (E4-5), and Yilmia...component in E6’s is concentrated in the main, enstatite-rich fraction of the meteorites, with density...suggest that the subsolar component is located in enstatite, or less likely, in a phase closely associated...subsolar gases in HCl- and HNO-resistant sites (enstatite?), but fail to show the increasinggasconcentration...some other phase, but were then transferred to enstatite by metamorphism. Most of the ‘29Xe,of E6’s is |  | | Journal (article/letter/editorial) | | Netherlands 420 [61 s 7Rb.87Sr CHRONOLOGY OF ENSTATITE METEORITES J -F M I N S T E R , L -P R I C A R...studies of the type-I enstatlte chondrites Abee and Indarch and the intermediate-type Saint Mark's and Saint...Abee data scatter in the 87Rb-87Sr d~agram For Indarch, Saint Mark's and Saint Sauveur, we obtained welldefined...straight lanes of "age" (T) and "initial ratio" (/) Indarch, T = 4 393 +- 0 043 b y , I = 0 7005 +- 0 0009...0 047 b y , I = 0 6993 -+ 0 0014 Our result on Indarch agrees with the former result of Gopalan and Wetherill |  | Hopp, Jens, Trieloff, Mario, Ott, Uli, Korochantseva, Ekaterina V., Buykin, Alexey I. (2014) 39Ar-40Ar chronology of the enstatite chondrite parent bodies. Meteoritics & Planetary Science, 49 (3) 358-372 doi:10.1111/maps.12243 | Journal (article/letter/editorial) | | 1111/maps.12243 39 Ar-40Ar chronology of the enstatite chondrite parent bodies Jens HOPP1*, Mario TRIELOFF1...the K-Ar and U-Pb decay systems. INTRODUCTION Enstatite chondrites encompass a group of meteorites with...the respective enstatite chondrite parent bodies. There are two major groups of enstatite chondrites, the...reactions within the EH group exemplified in the meteorite Qingzhen led to © The Meteoritical Society, 2014...consequences of shock. Rubin et al. (1997) noted that enstatite chondrites by and large show greater shock damage |  | | Journal (article/letter/editorial) | | 196–210 www.elsevier.com/locate/gca I–Xe ages of enstatite chondrites Jens Hopp a,⇑, Mario Trieloff a,b, Ulrich...history of enstatite chondrite parent bodies we determined 129I–129Xe whole rock ages of enstatite chondrites...impact melt) relative to the Shallowater reference meteorite (4562.3 ± 0.4 Ma, all errors are 1r). I–Xe ages...during sequential cooling. The enstatite chondrites Abee (EH4), Indarch (EH4), EET 96135 (EH4/5) and St...high retention temperature of the I–Xe system in enstatite (estimated >800 °C) this young age implies a later |  | | Journal (article/letter/editorial) | | of the magnesium silicate minerals forsterite, enstatite, and roedderite by heating of amorphous "protosilicate"...roedderire, best known from studies of unequilibrated enstatite chondrite meteorites, becomes a major species...member of the olivine series (Mg, Fe)2SiO4, and enstatite, MgSiO3. Terrestrially these are most abundant...forsterite and enstatite (Winkler 1979). Olivine, and orthopyroxenes including enstatite, are the most...but has been found in several unequilibrated enstatite chondrites and three irons (Rambaldi et al. 1986) |  | | Journal (article/letter/editorial) | | His sharp eye led him to discover eight new meteorite minerals and to find the first extraterrestrial...known only from terrestrial rocks. One of his meteorite mineral finds, djerfisherite, has been subsequently...the full spectrum of meteorite types. His investigation of the Murchison meteorite is one of the most thorough...thorough studies of a complex meteorite published in a single paper. Reprint requests have exhausted...more clue to the conditions under which a given meteorite type formed. Once he found a new mineral he scoured |  | | Journal (article/letter/editorial) | | in U.S.A. + .00 Compositional differences in enstatite chondrites based on carbon and nitrogen stable...systematic relationship between carbon content and meteorite group or petrologic type. Wholerock 013C values...isotopically lighter (013C = -24%.) than in any enstatite chondrite. Nitrogen occurs as osbomite, sinoite...have higher N concentrations than other type 6 enstatite chondrites. Sinoite, where present, is depleted...but is marked by olsN = +2690/00. INTRODUCTION ENSTATITE CHONDRITES compose the smallest group of chondritic |  | | 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,...silicate apatite, 411. Beitbridge, Rhodesia, enstatite-sillimanite-corundum-cordierite-quar tz rock,...and ganophyllite, 893; celsian, 914. Bencubbin meteorite, descr., descr, and anal. of enclaves in, bearing |  | | Journal (article/letter/editorial) | | formed as a highly fractionated system Lvithin the meteorite or as part of a chemical-pressure environment...environment foreign to that indicated for the meteorite. INrnotucuort The first meteoritic occurrenceof cordierite...colored inclusion in the AIIende chondrite. This meteorite, which fell near Parral, Chihuahua, Mexico on...abundance and unusual features,studies of this meteorite will undoubtedly attract the attention of investigatorsfor...of material made available to the writer. The meteorite is composedof chondrules embeddedin a black fine-grainedmatrix |  | | Journal (article/letter/editorial) | | Metal–silicate silicon isotope fractionation in enstatite meteorites and constraints on Earth's core formation...silicon isotope fractionation metal silicate enstatite meteorite Bulk Silicate Earth Earth's core formation...fractionation between metal and silicate in metal-rich enstatite meteorites as an analogue for Earth's differentiation...in metal and Si in silicate in the aubrites (enstatite achondrites) Mount Egerton and Norton County....meteorites are believed to have derived from enstatite chondrites by melting and thermal metamorphism |
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