 | | Journal (article/letter/editorial) | | GEOCHEMISTRY Djerfisherite in Kimberlites of the Kuoikskoe Field as an Indicator of Enrichment of Kimberlite...unaltered kimberlite samples from the Siberian Craton (Russia) and Slave Craton (Canada), the previously existing...in 2001 at a depth of 420 m in the UdachnayaEast pipe mine [2, 3]. This rock does not contain the minerals...fact that the system was closed from the moment of pipe formation (~370 Ma ago [5]). The abovemen Sobolev...Branch, Russian Academy of Sciences, Novosibirsk, Russia email: isharygin@mail.ru tioned peculiarities |  | | Journal (article/letter/editorial) | | In some pipes, for example the Obnazhennaya of the Lower Olenek district, Yakutia, the xenoliths exhibit...-bearing ultramafic rocks and eclogite in the Obnazhennaya pipe contain sulfide minerals, which we have already...inclusions of ultramafic rocks and eclogite found in the pipe, we selected specimens with different textures and...Zagadochnaya pipe (1, 6, 8). The main sulfide minerals in pyrope peridotite of the Obnazhennaya pipe are pentlandite...microfractures in the same minerals. Chalcopyrite- pentlandite aggregates are most widespread. Their central |  | | Journal (article/letter/editorial) | | 0‰ [4] for a specimen of kimberlite from the Muza pipe. Problems of the origins and sources of mineral...olivine-bearing ultramafites are often domi nated by pentlandite, whereas the sulfide aggre gates in pyroxenites...eclogite xenoliths. The latter contain numerous pentlandite intergrowths (Fig. 1D, E), which often occupy...Komsomol'skaya, Chomur, Nadezhnaya, Vtorogodnitsa, and Obnazhennaya pipes. We were interested not so much in details...the pyrrhotite and for the chalcopyrite and pentlandite groups, together with the characteristics of |  | | Book | | selected a number of typical kimberlite pipes: 'Obnazhennaya from the Lower OleneMk region, 'Udachnaya and...region, where over the course of a number of years, field investigations have been car ried out and a large...characterizes the entire complex of xenoliths for each pipe. Data were also obtained from certain other pipes...covered by kelyphitic rims (e. g. in the 'Zagadochnaya pipe), they were given preliminary treatment in acids...xenolith of a pyrope websterite from the 0bnazhe nnaya pipe. For the determination of chromium, different standards |  | | Journal (article/letter/editorial) | | classified for garnets from the Mir kim berlite pipe and from various other pipes in the Yakutia province...inclusion in gamet (Pipe 1, specimen 56/6,×350);b) syngenetic chrome spinel inclusion (Pipe 1, specimen 81...colorimetric parameters of garnets from the Mir pipe for minerals from various rock types [12]: dunites... Bimineralic inclusions in garnets from the Mir pipe: a) olivine (1)-sulfide (2), specimen 57,×300; b)...dunites are of very minor occurrence in the Mir pipe. Sulfide inclu- Sulfide nodules occur in virtually |  | Garanin, V. K., Kudryavtseva, G. P., Matsyuk, S. S., Cherenkova, A. F., Cherenkov, V. G. (1990) DISCOVERY OF ZIRCON-BEARING ILMENITE-AMPHIBOLE PYROXENITE IN KIMBERLITE. International Geology Review, 32 (11) 1086-1094 doi:10.1080/00206819009465841 | Journal (article/letter/editorial) | | xenolith found in the Slyudyanka kimberlite pipe in the Kuoysky field, are described. The rock is fine- to medium-grained...pyroxenite found in the Slyudyanka kimberlite pipe of the Kuoysky field. Ilmenite pyroxenite containing zircon...kimberlite pipe in Lesotho. Later, the paragenesis of zircon with ilmenite and clinopyroxene in a pipe in South...(0.57 wt%) for ilmenite included in zircon (Kao pipe). Zircon, a characteristic kimberlite mineral,...xenolith of zircon-bearing rock from the Slyudyanka pipe is a round nodule about 3 cm in diameter. The fine- |  | | Journal (article/letter/editorial) | | Sciences, 3 Koptyuga Avenue, Novosibirsk 630090, Russia 1 Abstract Large-ion lithophile elements (LILE)-enriched...xenolith from the Udachnaya-East kimberlite pipe, Daldyn field, Siberian craton. The studied xenolith consists...Cr-spinel, diopside, rutile, Mg-Cr-ilmenite, and pentlandite. Crichtonite-group minerals also occur as acicular...xenolith, mantle metasomatism, Udachnaya kimberlite pipe Introduction During recent decades, mantle-derived...also frequently enriched in Ca, some of the high field strength elements (HFSE: Zr, occasionally Nb), and |  | | Journal (article/letter/editorial) | | section; x 300. pyrrhotite, chalcopyrite or pentlandite in the majority of ultramafic inclusions in basalts...consists of pyrrhotite which carries inclusions of pentlandite. The latter look like tongues of flame or platelets...magmatic primary (pyrrhotite, chalcopyrite, pentlandite) and postmagmatic (pyrite). The magmatic type...Islands. Polished section; x 300. FIGURE 8. Pentlandite-pyrrhotitic pellets (white) in a silicate mineral...structure is plainly visible: pyrrhotite (gray) and pentlandite (white). the magmas. We discribed the same type |  | | Journal (article/letter/editorial) | | igneous rocks are common, especially in the Stockdale pipe. Igneous rocks which occur as xenoliths include...subordinate amounts of rutile and sulphides (pyrrotite-pentlandite (?)-chalcopyrite). Interstitial kaersutitic amphibole...arkose, basalt, granite. In addition, the Stockdale pipe contains xenoliths of gabbro, metagabbro, pyroxenite...t e l y typical of alteration i n the Stockdale pipe. I~o u n e q u i v o c a l olivine-bearing xenoliths...examination. Three specimens from the Stockdale pipe which have a m i n i m u m of alteration were selected |  | Taylor, Lawrence A., Snyder, Gregory A., Keller, Randall, Remley, David A., Anand, Mahesh, Wiesli, Rene, Valley, John, Sobolev, Nikolai V. (2003) Petrogenesis of group?A eclogites and websterites: evidence from the Obnazhennaya kimberlite, Yakutia. Contributions to Mineralogy and Petrology, 145 (4) 424-443 doi:10.1007/s00410-003-0465-y | Journal (article/letter/editorial) | | eclogites and websterites: evidence from the Obnazhennaya kimberlite, Yakutia Received: 21 April 2002... Abstract Mantle xenoliths from the Obnazhennaya kimberlite pipe, Yakutia, possess a large range of mineralogical...the Obnazhennaya group A and the well-studied group B eclogites from the Udachnaya kimberlite pipe. In...Petrography, Russian Academy of Science, Novosibirsk, Russia Editorial responsibility: T. Grove Introduction...expressions of Precambrian rocks. The Obnazhennaya kimberlite pipe, from which the studied xenoliths come |  | | Book | | . . . . . . . . . . . . . . . . . . .. Western Russia. . . . . . . . . . . . . . . . . . . . .. India...geologists discovered a kimberlite diatreme (the Zarnitsa pipe) in the headwaters of the Markha River in Siberia...heralded a new era in the study of kimberlite both in Russia and in the West. In the past 20 years the older...in the north-east of the country. In the Seguela field there are, in addition to the normal kimberlites...(Crockett and Mason 1968). This group contains the AK/l pipe, the secondlargest known kimberlite. Others are |  | | Journal (article/letter/editorial) | | Analyses: 1-9, 11-32 - "Obnazhënnaya" pipe; 10, 33 - "Udachnaya" pipe; 34 - "Nadgzhnaya" dike. The total...xenoliths of this type are known in the "Novinka" pipe (Upper Muna region), "Udachnaya," "Mir," and certain...studied in the greatest detail in the "Obnazhënnaya" pipe. The mineral composition of the Type B xenoliths...of Group cessory minerals include sulfides (pentlandite, B examined contains a variable amount of olivine...samples of phlogopite pyroxenites of the "Udachnaya" pipe. It is characterized by an increased content of |  | | Book | | Macrocrysts and their Inclusions, Guaniamo Kimberlite Field, Venezuela. Primary and related diamond occurrences...minerals within Kalahari cover overlying a kimberlite pipe. Depletion and enrichment processes in lithospheric...Xenoliths from Kimberlite Pipes The Leslie Kimberlite Pipe of Lac de Gras, Northwest Territories, Canada: Evidence...Diatremes. 89 Bordon, V., Astapenko, V. Braslav Field: the prospects for discovering diamondiferous rocks...province. Geology and composition of the Nakyn field kimberlite pipes and diamond properties (Yakutia) |  | | Journal (article/letter/editorial) | | diamondiferous ones, from Yakutian kimberlites in Russia. It is, therefore, natural that the major portion...enriched in other varieties—e.g., Group A in the Obnazhennaya pipe. 2.1.1.2. Garnets. The garnets in mantle eclogites..., 1993, 1997). Sulfide minerals (pyrrhotite, pentlandite, chalcopyrite) are present in most eclogites...diamondiferous eclogite, UX-1, from the Udachnaya kimberlite pipe is shown in Fig. 12 and on the cover of this journal...isotopic range (d15N) seen in P-type diamonds from Pipe no. 50 in China (Cartigny et al., 1997) and the |  | | Book | | CONFERENCE Novosibirsk, August 1995 EXTENDED ABSTRACTS RUSSIA ORGANIZING COMMITTEE Additional copies and other... Universitetsky pr. 3, Novosibirsk 90, 630090, Russia TeL: (007) 3832-354655 Fax: (007)-3832-352692 ... 109 Feldman A.A. 649 Feoktlstov G.D. 152 Field M. 155 Fipke C.E. 158 Fitzsimmons 1. 242 Foley...associated alkalic basaltic rocks from Pishin District, Pakistan.4 Reasons of variations of individual...and petrogenetic blocking of rocks in Udachnaya pipe.5 High pressure experimental study on growth and |  | | Book | | magmatism, Its Sources and Plumes”, 1–7 September 2019, Russia, Saki. Springer Proceedings in Earth and Environmental...Series Editor Natalia S. Bezaeva, The Moscow Area, Russia The series Springer Proceedings in Earth and...magmatism, Its Sources and Plumes”, 1–7 September 2019, Russia, Saki. 123 Editor Nikolay Vladykin Vinogradov...Vinogradov Institute of Geochemistry SB RAS Irkutsk, Russia ISSN 2524-342X ISSN 2524-3438 (electronic) Springer...tectonics hypothesis throughout the world, including Russia, there has been an increased interest in the field |  | | Book | | South Africa 8 1.4 Major kimberlite sites in Russia 9 1.5 Main Russian diamond mine sites and kimberlite...hypabyssal facies 93 6.5 Model of a kimberlite pipe 95 6.6 Floating reef of granitic country rock...Geological sketch map and cross section of the Argyle pipe, Western Australia 133 7.3 Schematic cross section...volcano-tectonic structure 204 12.10 The strewn field of yakutites (diamond-lonsdaleite intergrowths)...regional structure as interpreted from the gravity field over the Brakos-Doornberg lineaments in the Gordonia-Carnarvon |
|
