 | Dobrzhinetskaya, L. F., Green, H. W., Bozhilov, K. N., Mitchell, T. E., Dickerson, R. M. (2003) Crystallization environment of Kazakhstan microdiamond: evidence from nanometric inclusions and mineral associations. Journal of Metamorphic Geology, 21 (5) 425-437 doi:10.1046/j.1525-1314.2003.00452.x | Journal (article/letter/editorial) | | 21, 425–437 Crystallization environment of Kazakhstan microdiamond: evidence from nanometric inclusions...and zircon from felsic gneiss of the Kokchetav massif, Kazakhstan, have been examined utilizing electron...phlogopite, albite, K-feldspar, rutile, apatite, titanite, biotite, chlorite and graphite in various combinations...essentially the same stoichiometry suggests that the Kokchetav diamond crystallized from a fluid containing variable...originate from the mantle. It is concluded that Kokchetav diamond most likely crystallized from a COH-rich |  | | Journal (article/letter/editorial) | | potential of metamorphic rocks in the Kokchetav Massif, northern Kazakhstan Victor A. PECHNIKOV1 and Felix V...There are two known diamondiferous bodies in Kazakhstan, the Kumdy-Kol deposit and the Barchi-Kol occurrence...belt that outcrops at the central part of the Kokchetav Massif. The metamorphic belt is interpreted as a...rocks. Graphite, coesite, clinopyroxene, rutile, titanite, kyanite, K-feldspar, biotite, phengite, quartz...of the metamorphic rocks. Key-words: diamond, Kazakhstan, metamorphism, genesis, carbon. 1. Introduction |  | | Journal (article/letter/editorial) | | clinopyroxene and titanite in a UHP diamond-free garnet-clinopyroxene rock from the Kokchetav Massif, northern...northern Kazakhstan a Kunihiko Sakamaki & Yoshihide Ogasawara a a Department of Earth Sciences , Waseda...clinopyroxene and titanite in a UHP diamond-free garnet-clinopyroxene rock from the Kokchetav Massif, northern...northern Kazakhstan, International Geology Review, DOI: 10.1080/00206814.2013.819965 To link to this article:...clinopyroxene and titanite in a UHP diamond-free garnet-clinopyroxene rock from the Kokchetav Massif, northern |  | | Journal (article/letter/editorial) | | subducted carbonate rocks from the Kokchetav massif (Northern Kazakhstan) recrystallised within the diamond...of biotite + K-feldspar and biotite + zoisite + titanite, are interpreted to represent two different types...diamonds in metacarbonates from the Kokchetav massif (Northern Kazakhstan) revealed the presence of a fluid...subducted carbonate rocks from the Kokchetav massif (Northern Kazakhstan). We show with Laser Ablation ICP-MS...processes. 2. Geological setting The Kokchetav massif (Northern Kazakhstan) represents a slice of continental |  | | Journal (article/letter/editorial) | | from diamond-bearing marble in the Kokchetav massif, northern Kazakhstan IKUO KATAYAMA1,*, MASAHITO OHTA2...of deeply subducted impure marble from the Kokchetav massif, we investigated mineral inclusions in zircon...found in impure marbles from the Kokchetav massif, northern Kazakhstan (Sobolev & Shatsky, 1990; Ogasawara...*E-mail: mineral in metacarbonate rocks from the Kokchetav UHP terrane, and is considered to be the best...zircons of a diamond-bearing marble from the Kokchetav massif. Discrete inclusions in zircons were analyzed |  | | Journal (article/letter/editorial) | | from supersilicic titanite in UHP marble from the Kokchetav Massif, northern Kazakhstan YOSHIHIDE OGASAWARA...supersilicic titanite was discovered in an impure calcite marble at Kumdykol in the Kokchetav UHP (ultrahigh-pressure)...(ultrahigh-pressure) metamorphic terrane, northern Kazakhstan. This impure marble consists mainly of calcite...symplectites of diopside + zoisite, with minor amount of titanite, phengite, and garnet. No diamond was found in...major exsolved phases in the cores and mantles of titanite crystals with minor calcite and apatite. The strongest |  | | Journal (article/letter/editorial) | | c a t e / c h e m g e o The current status of titanite–rutile thermobarometry in ultrahigh-pressure metamorphic...metamorphic rocks: The influence of titanite activity models on phase equilibrium calculations Peter Tropper...Keywords: Titanite Activity model Al+F substitution UHP Thermobarometry A B S T R A C T Titanite, an important...for Ti for O. This compositional variability of titanite could be used in phase equilibrium calculations...Thermodynamic properties and stability of AlF-bearing titanite CaTiOSiO4–CaAlFSiO4. Contributions to Mineralogy |  | | Journal (article/letter/editorial) | | Diamond-Free UHP Dolomitic Marble from the Kokchetav Massif a Yoshihide Ogasawara & Kazumasa Aoki a...DiamondFree UHP Dolomitic Marble from the Kokchetav Massif, International Geology Review, 47:11, 1178-1193...Diamond-Free UHP Dolomitic Marble from the Kokchetav Massif YOSHIHIDE OGASAWARA1 AND KAZUMASA AOKI Department...structure occurs at Kumdy-kol in the Kokchetav Massif, northern Kazakhstan. Three centimeter-scale zones occur...(Sobolev and Shatsky, 1990), the Kokchetav Massif of northern Kazakhstan has been the center of attention |  | | Journal (article/letter/editorial) | | clinopyroxene (left) and garnet (right). Kokchetav massif, Kazakhstan Some chemical compounds adopt different...reach diameters of 0.3 mm, as seen at Kumdy Kol, Kazakhstan (FIG. 3B). In Experimental studies on the HP...spectacular pyrope quartzite rocks from the Dora-Maira massif, western Alps (Chopin 1984), was a hallmark event...retrograde quartz (Qz) in pyrope (Prp), Dora-Maira massif, Italy (PPL). (B) Same as (A) (XPL). (C) Twinned...Twinned coesite inclusion in pyrope, Dora-Maira massif (XPL). (D) Garnet (Grt) showing radial cracks around |  | ZHANG, R. Y., LIOU, J. G., ERNST, W. G., COLEMAN, R. G., SOBOLEV, N. V., SHATSKY, V. S. (1997) Metamorphic evolution of diamond-bearing and associated rocks from the Kokchetav Massif, northern Kazakhstan. Journal of Metamorphic Geology, 15 (4) 479-496 doi:10.1111/j.1525-1314.1997.00035.x | Journal (article/letter/editorial) | | diamond-bearing and associated rocks from the Kokchetav Massif, northern Kazakhstan R . Y. Z HA N G1 , J . G. L I OU...from Unit II at Kulet, eastern Kokchetav Massif, northern Kazakhstan, were studied. Diamond-bearing gneisses...phengite, clinopyroxene, K-feldspar, biotite, rutile, titanite, calcite and zircon occur in garnet. Diamond-bearing...words: diamond; eclogite; K-feldspar lamellae; Kokchetav Massif; UHP; whiteschist I N T RO DU C TI O N Diamond...first identified from the Kokchetav Massif in the Caledonides of northern Kazakhstan. Although the discovery |  | | Journal (article/letter/editorial) | | microdiamond in UHP dolomite marble from Kokchetav Massif, Kazakhstan H. ISHIDA,1 Y. OGASAWARA,1 K. OHSUMI2...microdiamond in dolomite marble from Kumdy-kol in the Kokchetav Massif, are unusual; a previous study estimated the...distinct stages. Key words: dolomite marble; Kokchetav Massif; microdiamond; micro-Laue diffraction; ultrahigh-pressure...1999). The microdiamonds in the Kokchetav Massif, northern Kazakhstan are of crustal origin, formed during...in China (Xu et al., 1992), the Western Gneiss Region in Norway (Dobrzhinetskaya et al., 1995), Saxonian |  | | Journal (article/letter/editorial) | | Diamond-Grade Eclogite from the Kokchetav Massif, Northern Kazakhstan a b c Kazuaki Okamoto , Ikuo...Diamond-Grade Eclogite from the Kokchetav Massif, Northern Kazakhstan, International Geology Review, 48:10...Diamond-Grade Eclogite from the Kokchetav Massif, Northern Kazakhstan KAZUAKI OKAMOTO,1 Institute of Earth...investigated mineral inclusions in zircons from Kokchetav diamond-grade eclogites. In the eclogites, phengite...eclogite from the Kumdy-Kol region of the Kokchetav Massif, northern Kazakhstan, is the best natural sample |  | | Journal (article/letter/editorial) | | of coesite exsolutions in titanite suggest a precursor garnet or titanite containing six-fold coordinated...diamond in the Cambrian orogen of the Kokchetav massif, Kazakhstan [5], implying minimum formation pressures...cracks in the host garnet [3]; Parigi, Dora-Maira massif. (B) Ellenbergerite (Elb) included in pyrope garnet...garnet along with rutile (ru); Parigi, Dora-Maira massif. This Mg^Al^(Ti,Zr)-silicate contains 8 wt% H2...crossed nicols; pyroxenite in marble, Kumdi Kol, Kokchetav massif. EPSL 6683 19-6-03 Cyaan Magenta Geel Zwart |  | | Journal (article/letter/editorial) | | of Microdiamond in Dolomite Marble from the Kokchetav Massif—Additional Evidence for Two-Stage Growth of...of Microdiamond in Dolomite Marble from the Kokchetav Massif—Additional Evidence for Two-Stage Growth of...of Microdiamond in Dolomite Marble from the Kokchetav Massif— Additional Evidence for Two-Stage Growth...dolomite marble from the Kumdy-kol area of the Kokchetav Massif. These microdiamonds have been classified...morphology. S-type diamond, the most abundant type in Kokchetav dolomite marble, was examined using microcathodoluminescence |  | Ohta, M, Mock, T, Ogasawara, Y, Rumble, D (2003) Oxygen, carbon, and strontium isotope geochemistry of diamond-bearing carbonate rocks from Kumdy-Kol, Kokchetav Massif, Kazakhstan. Lithos, 70 (3) 77-90 doi:10.1016/s0024-4937(03)00093-8 | Journal (article/letter/editorial) | | diamond-bearing carbonate rocks from Kumdy-Kol, Kokchetav Massif, Kazakhstan M. Ohta a, T. Mock b, Y. Ogasawara a...Diamond-bearing carbonate rocks from Kumdy-Kol, Kokchetav massif, Kazakhstan, were strongly altered by fluids flowing...an area measuring 100 10 km in the Kokchetav massif, Kazakhstan (Sobolev and Shatsky, 1990; Shatsky...map and sample locations of Kumdy-Kol, Kokchetav massif, Kazakhstan. Outcrops include eclogite, amphibolite...1995; Zhang et al., 1997; Okamoto et al., 2000). Kokchetav microdiamonds define a unique population in relation |  | | Journal (article/letter/editorial) | | KUMDY-KOL AND BARCHI-KOL DEPOSITS, KOKCHETAV MASSIF, NORTHERN KAZAKHSTAN Victor A. PECHNIKOV Central Research...and Barchi-Kol deposits in the Kokchetav Massif, northern Kazakhstan, varies widely from less than one...diamond in the metamorphic sequence of the Kokchetav Massif. Keywords: diamond, metamorphic rocks, factor...factor analysis, Kumdy-Kol, Barchi-Kol, Kokchetav Massif, Kazakhstan. Sommaire La teneur en diamant des...et Barchi-Kol, associés au massif de Kokchetav, dans le nord du Kazakhstan, varie beaucoup, de moins d’un |  | | Journal (article/letter/editorial) | | prograde zoning pattern in clinopyroxene from the Kokchetav diamond-grade metamorphic rocks: Missing part...melting Second critical end point UHPM history Kokchetav massif a b s t r a c t Despite extensive studies...studies of calc-silicate rocks of the Kokchetav massif, there is no satisfactory explanation of the origin...diamond-free UHP calc-silicate rocks of the Kokchetav massif. We believe that the crystallization of potassium-bearing...metamorphic (UHPM) rocks from the Kokchetav massif (Northern Kazakhstan) and particularly impure marbles |  | | Journal (article/letter/editorial) | | kokchetavite in the polyphase mineral inclusions from Kokchetav UHP calc-silicate rocks: evidence from confocal...metamorphic (UHPM) rocks from the Kokchetav Complex (northern Kazakhstan). Experiments have shown that K-cymrite...the calc-silicate rocks of the Kokchetav Complex (northern Kazakhstan) and discuss the mechanism of kokchetavite...quartz, siliceous glass, phengite, phlogopite titanite calcite zircon in garnet and clinopyroxene...clinopyroxene of the UHPM calc-silicate rocks from the Kokchetav Complex (Hwang et al., 2004). Kanzaki et al. (2012) |  | | Journal (article/letter/editorial) | | Nanometric inclusions of carbonates in Kokchetav diamonds from Kazakhstan: A new constraint for the depth of...microdiamonds from the Kokchetav ultra-high pressure metamorphic terrane of Kazakhstan contain nanometric...pressure, ca. 4 GPa. Geothermobarometry applied to Kokchetav diamond-bearing rocks yielded a wide range of...different laboratories, we propose the pressure for Kokchetav diamond crystallization to be ~ 6 to 9 GPa. This...evidence that the metasedimentary rocks of the Kokchetav massif containing diamonds were subducted to the |  | Hwang, Shyh-Lung, Shen, Pouyan, Chu, Hao-Tsu, Yui, Tzen-Fu, Liou, Juhn G., Sobolev, Nikolay V., Zhang, Ru-Yuan, Shatsky, Vladislav S., Zayachkovsky, Anton A. (2004) Kokchetavite: a new potassium-feldspar polymorph from the Kokchetav ultrahigh-pressure terrane. Contributions to Mineralogy and Petrology, 148 (3) 380-389 doi:10.1007/s00410-004-0610-2 | Journal (article/letter/editorial) | | Kokchetavite: a new potassium-feldspar polymorph from the Kokchetav ultrahigh-pressure terrane Received: 14 October...garnetpyroxene rock from the Kokchetav ultrahigh-pressure terrane, Kazakhstan. Kokchetavite has a hexagonal...a/b-cristobalite (or quartz) + siliceous glass ± phlogopite/titanite/calcite/zircon, occurring as multiphase inclusions...Zayachkovsky NEDRA Geological Expedition, 475013 Kokchetav, Kazakhstan concluded that kokchetavite could not be...diamondiferous UHP metamorphic rocks from the Kokchetav Massif has been intensively studied (Katayama et |  | | Journal (article/letter/editorial) | | southern Dora-Maira massif and Lago di Cignana in the Western Alps, the Dabie Shan-Sulu region in northeastern...northeastern China, the Kokchetav massif in northern Kazakhstan, and the Western Gneiss Region of the Scandinavian...preserving rare coesite relics. In the Dora-Maira massif, the Brossasco-Isasca Unit includes coesite-bearing...jadeitealmandine orthogneiss. In the Dabie Shan-Sulu region, felsic rocks with clear evidence of UHPM include...also may have been subjected to UHPM. In the Kokchetav massif, microdiamond-bearing rocks include garnet-biotite |  | Masago, H., Rumble, D., Ernst, W. G., Parkinson, C. D., Maruyama, S. (2003) Low delta18O eclogites from the Kokchetav massif, northern Kazakhstan. Journal of Metamorphic Geology, 21 (6) 579-587 doi:10.1046/j.1525-1314.2003.00465.x | Journal (article/letter/editorial) | | 579–587 Low d18O eclogites from the Kokchetav massif, northern Kazakhstan H. MASAGO,1,* D. RUMBLE,2 W. G....silicates in eclogites and whiteschists from the Kokchetav massif were analyzed by whole-grain CO2-laser fluorination...and UHP metamorphism. Key words: eclogite; Kokchetav massif; low d18O; whiteschist. INTRODUCTION Since...1990), the Kokchetav massif has attracted the interest of geoscientists worldwide. Kokchetav metamorphic...features of the complex. The significance of the Kokchetav massif and the much greater depths of burial indicated |  | | Journal (article/letter/editorial) | | thermodynamic calculations: examples from the Kokchetav Massif, Kazakhstan and the Sulu terrane, China HANS-JOACHIM...siliceous calcite-dolomite marble from the Kokchetav Massif, Kazakhstan and a dolomite marble from the UHP unit...rocks (Sulu terrane: 3.5–1.0 GPa around 6008C; Kokchetav Massif: 7 GPa—11008C to 0.65 GPa—7008C) are compatible...Orogen in Mali: Caby, 1994) and diamond (Kokchetav Massif, Kazakhstan: e.g. Ogasawara, 2009) in these rocks...Sulu terrane and in the Erzgebirge of the Bohemian Massif in central Europe, respectively, that the marbles |  | DOBRZHINETSKAYA, L. F., WIRTH, R., RHEDE, D., LIU, Z., GREEN, H. W. (2009) Phlogopite and quartz lamellae in diamond-bearing diopside from marbles of the Kokchetav massif, Kazakhstan: exsolution or replacement reaction?. Journal of Metamorphic Geology, 27 (9) 607-620 doi:10.1111/j.1525-1314.2009.00832.x | Journal (article/letter/editorial) | | diamond-bearing diopside from marbles of the Kokchetav massif, Kazakhstan: exsolution or replacement reaction...lamellae of pyroxene in garnet (grt), coesite in titanite and omphacite from UHPM terranes are widely accepted...Blackwell Publishing Ltd and finally of coesite in titanite (Ogasawara et al., 2000) are well-known phenomena...Cpx from diamond-bearing marble of the Kokchetav massif, Kazakhstan (Zhu & Ogasawara, 2002). These observations...diamond-bearing diopside from marbles of the Kokchetav massif, Kazakhstan (Dobrzhinetskaya et al., 2005, 2006a |  | | Journal (article/letter/editorial) | | rocks from the Saxonian Erzgebirge and the Kokchetav Massif: are so-called diamondiferous gneisses magmatic...quartz-rich diamondiferous rocks from the Kokchetav Massif, especially the zonation of garnet, were studied...By this, the P^T paths, derived here for the Kokchetav rocks, and the textural observations it is concluded...metasediments (Erzgebirge: at T as high as 1200‡C, Kokchetav Massif: at 50^100‡C lower T) and ascended from at...deep portions of thickened continental crust (Kokchetav Massif: 45^50 km close to 800‡C, Erzgebirge: 55^60 |
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