 | | Journal (article/letter/editorial) | | polymorph of albite, from the Kokchetav ultrahigh-pressure massif, Kazakhstan SHYH-LUNG HWANG1,*, POUYAN...occurs in association with diopside, quartz/cristobalite, phengite/phlogopite, an unidentified aluminosilicate...eclogite from the Kumdy Kol, Kokchetav ultrahigh-pressure massif in northern Kazakhstan. The unit-cell parameters...between infiltrated melt and omphacite when the Kokchetav massif was exhumed from mantle depths to the base...Key-words: kumdykolite, polymorph, albite, Kokchetav massif, new mineral. 1. Introduction metamorphic |  | | Journal (article/letter/editorial) | | kokchetavite in the polyphase mineral inclusions from Kokchetav UHP calc-silicate rocks: evidence from confocal...muscovite/phengite, lollingite, calcite and a-cristobalite in polyphase mineral inclusions in clinopyroxene...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...clinopyroxene of the UHPM calc-silicate rocks from the Kokchetav Complex (Hwang et al., 2004). Kanzaki et al. (2012) |  | 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...is found to be associated with phengite + a/b-cristobalite (or quartz) + siliceous glass ± phlogopite/...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 |  | Hill, Tina R., Konishi, Hiromi, Hobbs, Franklin, Lee, Seungyeol, Xu, Huifang (2019) Precipitates of α-cristobalite and silicate glass in UHP clinopyroxene from a Bohemian Massif eclogite. American Mineralogist, 104 (10) 1402-1415 doi:10.2138/am-2019-6773 | Journal (article/letter/editorial) | | Precipitates of α-cristobalite and silicate glass in UHP clinopyroxene from a Bohemian Massif eclogite Tina...Low-pressure metastable nanoscale crystals of a-cristobalite have been observed epitaxially exsolved in cores...cores of UHP clinopyroxene from the Bohemian Massif, Czech Republic. SAED patterns and HRTEM images detail...relationship between host clinopyroxene and a-cristobalite precipitate: [001]Di║[010]a, (010)Di ~║(101)a...~║(101)a. TEM results indicate that a-cristobalite exsolved from host clinopyroxene. Non-crystalline Al-bearing |  | | Report (issue) | | 4.84(1) Z = 2 X-ray Powder Pattern: Kokchetav massif, Kazakhstan. [by selective area electron diffraction]...21.26 2.02 0.70 0.04 9.85 101.19 (1) Kokchetav massif, Kazakhstan; semi-quantitative chemical analysis;...corresponds to Na1.02Ca0.00Al0.96Si3.02O8. (2) Kokchetav massif, Kazakhstan; semi-quantitative chemical analysis;...Na0.95Ca0.02Al0.98Si3.02O8. (3) Northern Bohemian Massif, Czech Republic; electron microprobe analysis,...Occurrence: As inclusions in omphacite in eclogite (Kazakhstan). Presumed to form under high temperatures with |  | | Report (issue) | | 6404(6) Z=8 X-ray Powder Pattern: Kokchetav Massif, northern Kazakhstan. (selective area diffraction pattern)...64.6 18.0 15.5 < 0.3 100.1 (1) Kokchetav Massif, northern Kazakhstan; average of several EDS analyses...pyrrhotite, cristobalite, quartz, titanite, zircon, talc. Distribution: From Kumdy-Kol, Kokchetav Massif, northern...northern Kazakhstan. Name: For the locality of the first specimens, the Kokchetav Massif. Type Material:...Kokchetavite: a new potassium-feldspar polymorph from the Kokchetav ultrahigh-pressure terrain. Contrib. Mineral. |  | | Journal (article/letter/editorial) | | precipitates in UHP clinopyroxene from the Kokchetav Massif: A TEM investigation Tina R. Hill, Hiromi...(Cpx) within garnet pyroxenite from the Kokchetav Massif, Kazakhstan. High-resolution transmission electron...Zerenda rock series (Kumdy Kol region) from the Kokchetav Massif, Kazakhstan. Peak metamorphic P-T estimates...Figure 1. Transmitted photomicrographs of Kokchetav Massif clinopyroxenes. (a) The core of (a) a clinopyroxene...light Transmitted light photomicrographs of Kokchetav Massif clinopyroxenes. The core of a looking parallel |  | Ferrero, Silvio, Ziemann, Martin A., Angel, Ross J., O’Brien, Patrick J., Wunder, Bernd (2016) Kumdykolite, kokchetavite, and cristobalite crystallized in nanogranites from felsic granulites, Orlica-Snieznik Dome (Bohemian Massif): not evidence for ultrahigh-pressure conditions. Contributions to Mineralogy and Petrology, 171 (1) doi:10.1007/s00410-015-1220-x | Journal (article/letter/editorial) | | ORIGINAL PAPER Kumdykolite, kokchetavite, and cristobalite crystallized in nanogranites from felsic granulites...granulites, Orlica‑Snieznik Dome (Bohemian Massif): not an evidence for ultrahigh‑pressure conditions Silvio...and K-feldspar, respectively, together with cristobalite, micas, and calcite has been identified in high-pressure...granulites of the Orlica-Snieznik dome (Bohemian Massif) as the product of partial melt crystallization...Nanogranites · Kumdykolite · Kokchetavite · Cristobalite Introduction Fluids and melts are the main |  | | 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 |  | | Journal (article/letter/editorial) | | subducted carbonate rocks from the Kokchetav massif (Northern Kazakhstan) recrystallised within the diamond...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...tectonic setting and geochronological data for this region has been provided by [18,20,23–28]. The diamondiferous |  | | Journal (article/letter/editorial) | | garnet-clinopyroxene rock from the Kokchetav Massif, northern Kazakhstan a Kunihiko Sakamaki & Yoshihide...garnet-clinopyroxene rock from the Kokchetav Massif, northern Kazakhstan, International Geology Review, DOI:...garnet-clinopyroxene rock from the Kokchetav Massif, northern Kazakhstan Kunihiko Sakamaki* and Yoshihide...garnet-clinopyroxene rock from the Kumdy-Kol area of the Kokchetav Massif were characterized using micro-FT-IR spectroscopy...depths. Keywords: micro-FT-IR; Kokchetav Massif; northern Kazakhstan; UHP metamorphism; hydroxyl; H2 |  | ernok, A., Ballaran, T. B., Caracas, R., Miyajima, N., Bykova, E., Prakapenka, V., Liermann, H.-P., Dubrovinsky, L. (2014) Pressure-induced phase transitions in coesite. American Mineralogist, 99 (4) 755-763 doi:10.2138/am.2014.4585 | Journal (article/letter/editorial) | | these phases, such as quartz, trydimite, and cristobalite, consist of frameworks of SiO4 tetrahedra and...several metastable phases has been reported in cristobalite, as well (e.g., Yagi and Yamakata 2000; Prokopenko...spectra of synthesized coesite in the O-H vibration region (2800–3400 cm–1). This is in agreement with the...were collected between 200 and 1200 cm–1. This region is optimal because the LabRam spectrometer used...cm–1 at 20 GPa) is dominant in the lower-frequency region and shows softening with increasing pressure (Fig |  | | Journal (article/letter/editorial) | | CO3. OH stretching bands in the 3450–3200 cm–1 region are attributed to the presence of minor H2O substituting...Osečná deposits, North Bohemian Uranium District, Liberec Region, Bohemia, Czech Republic. Here it occurs...cancrinite-group mineral species from the Khibina alkaline massif, Kola Peninsula, Russia: description and crystal...in the latter. The increased complexity of this region in cancrinite is ascribed to disorder of CO3 groups...quartz vein in the Erzwies area in the Hohe Tauern region in the province of Salzburg, Austria. The main |  | | Journal (article/letter/editorial) | | amphibole K-feldspar calcite gypsum sphalerite Region 600 °C8, 9 and Grt brine epidote quartz pentlandite... inclusions K-feldspar BaCO3 gneiss16 ZnS Kokchetav felsic 4.3–6.0 GPa peak UHP Grt, multiplephengite...mineralb inclusions (hydrous) Continental crust Kokchetav Grt-Cpx 4.3–6.0 GPa retrograde UHP Grt multiphase...inclusions phengite talc K-feldspar quartz cristobalite titanite zircon Grt-Qtz-Px 4.3–6.0 GPa peak...liquid phase; absorption bands in the 3000–3500 cm–1 region, Fig. 10e), and as OH– groups (Fig. 10c) (i.e. |  | Zolotarev, , Krivovichev, , Panikorovskii, , Gurzhiy, , Bocharov, , Rassomakhin, (2019) Dmisteinbergite, CaAl2Si2O8, a Metastable Polymorph of Anorthite: Crystal-Structure and Raman Spectroscopic Study of the Holotype Specimen. Minerals, 9 (10) 570 doi:10.3390/min9100570 | Journal (article/letter/editorial) | | metastability; burned coal dumps; Kopeisk; Ural region; crystal structure; Raman spectroscopy 1. Introduction...in the burned coal dumps, Kopeisk, Chelyabinsk region, Russia. 2. Materials and Methods 2.1. Materials...of mine number 45 near Kopeisk city, Chelyabinsk region, Southern Urals, Russia [41]. Dmisteinbergite and...the region of 1200–4000 cm−1. were recorded up to 1200 cm−1 . No peaks were observed in the region of...[9]. At least six of the strongest bands in the region of 200–1200 cm−1 (327, 439, 503, 801, 892, −1 (327 |  | HWANG, S. L., YUI, T. F., CHU, H. T., SHEN, P., SCHERTL, H. P., ZHANG, R. Y., LIOU, J. G. (2007) On the origin of oriented rutile needles in garnet from UHP eclogites. Journal of Metamorphic Geology, 25 (3) 349-362 doi:10.1111/j.1525-1314.2007.00699.x | Journal (article/letter/editorial) | | 2004) and marble (Chu et al., 2004) from the Kokchetav Massif; these well-aligned K-bearing inclusion pockets/lamellae...pockets/lamellae consist of kokchetavite, phengite, cristobalite and an amorphous phase, and were formed from...HP felsic granulite from the southern Bohemian Massif were also analysed. SAMPLE DESCRIPTIONS AND ANALYTICAL...granulite sample U3 was collected from the Blansky les massif of the Gföhl Unit, the tectonically uppermost...high-grade nappe units of the southern Bohemian Massif. The sample is strongly foliated and light-coloured |  | Grapes, Rodney, Sokol, Ella, Kokh, Svetlana, Kozmenko, Olga, Fishman, Ilia (2013) Petrogenesis of Na-rich paralava formed by methane flares associated with mud volcanism, Altyn-Emel National Park, Kazakhstan. Contributions to Mineralogy and Petrology, 165 (4) 781-803 doi:10.1007/s00410-012-0835-4 | Journal (article/letter/editorial) | | with mud volcanism, Altyn-Emel National Park, Kazakhstan Rodney Grapes • Ella Sokol • Svetlana Kokh Olga...Na2O from the Altyn-Emel mud volcanic field, Kazakhstan, are the products of melting of sediment ? salt...(crystallizing from melt and vapour phase) are tridymite, cristobalite, chlorapatite, alkali feldspar, pyrrhotite,...Partnership, Abay Ave., 26A, Almaty-13 050013, Kazakhstan e-mail: fil_35@mail.ru lived. Fires were extinguished...Methane fires Altyn-Emel mud volcano field Kazakhstan Introduction Gas fires have commonly been reported |  | | Journal (article/letter/editorial) | | (P6222), tridymite (C1, Cc, C222 or P212121), cristobalite (P4121), coesite (C2/c) and stishovite (P4/mnm)...titanite were discovered in marble from the Kokchetav UHP massif (Ogasawara et al., 2002). As experimental...H.W., Wang, S., 1996. Alpe Arami: a peridotite massif from depths of more than 300 kilometers. Science... D.C., 1994. The pressure behavior of alpha cristobalite. American Mineralogist 79, 9–14. Dupuis, C....titanite in UHP marble from the Kokchetav Massif, northern Kazakhstan. American Mineralogist 87, 454–461 |  | Tailby, N.D., Walker, A.M., Berry, A.J., Hermann, J., Evans, K.A., Mavrogenes, J.A., O’Neill, H.St.C., Rodina, I.S., Soldatov, A.V., Rubatto, D., Sutton, S.R. (2011) Ti site occupancy in zircon. Geochimica et Cosmochimica Acta, 75 (3) 905-921 doi:10.1016/j.gca.2010.11.004 | Journal (article/letter/editorial) | | °C. Zircon grains equilibrated with rutile + cristobalite show Ti contents (1201 ppm) nearly half that...that produced three-phase assemblages: zircon– cristobalite–rutile (ZrSiO4–SiO2–TiO2), zircon–tetragonal...zircon-bearing experiments. Abbreviations: Cris = cristobalite, m = melt, Rt = rutile, Sri = srilankite, Tz...ZrSiO4 (zircon), tetragonal zirconia, and SiO2 (cristobalite) spectra were collected in fluorescence mode...tetragonal zirconia containing 10,000 ppm Ti and cristobalite with 5000 ppm Ti were synthesized from oxide |  | | Journal (article/letter/editorial) | | 26%–46%), pigeonite (XFe = 42%–60%), tridymite, cristobalite, and rare mullite. The metapelitic rocks affected...coast, Andaman and Nicobar Islands, Yli basin (Kazakhstan), etc. [13,17,21–24]. The thermal impact of fire...currently active [23,29–37]. Mud volcanism in the region culminated during the Middle-Late Miocene but has...modeling of a Tengiz technological accident in Kazakhstan [16] and Shikhzairli MV fire eruption on 13 March...Most of bulk paralava samples bore up to 2 wt% cristobalite (revealed by XRD) but only one sample contained |  | | Journal (article/letter/editorial) | | S-type granites, after extraction from the source region and migration into the shallow crust (Clemens et...Bohemian Massif (Central Europe) Bavarian Unit (Bohemian Massif) Blansky Lés (Bohemian Massif) Hartsteinwerk...Hartsteinwerk loja quarry (Bohemian Massif) 270.0 284.1 286.0 325.0 30 2.6 11 50 0.80 0.80 0.48 0.65 1000...(Bohemian Massif) Mohsdorf (Bohemian Massif) Plaimberg (Bohemian Massif) Saidenbach (Bohemian Massif) Steinaweg...Steinaweg (Bohemian Massif) Stuckestein (Bohemian Massif) T7 borehole (Bohemian Massif) Erzgebirge (Bohemian |  | | Journal (article/letter/editorial) | | precession motion around the Si–Si vector (e.g. cristobalite; Swainson and Dove 1995). Others appear to be...[001] by data on other polymorphs of silica. Cristobalite has a negative bulk Poisson ratio in both its...mechanisms for auxetic behaviour in the alpha-cristobalite tetrahedral framework structure. Phys Chem Miner...Poisson ratios over the alpha–beta transition of cristobalite, SiO2: a molecular-dynamics study. Phys Rev...garnet in whiteschist of the HP-UHPM Kokchetav massif, Kazakhstan: a record of progressive UHP metamorphism |  | Ferrero, Silvio, Godard, Gaston, Palmeri, Rosaria, Wunder, Bernd, Cesare, Bernardo (2018) Partial melting of ultramafic granulites from Dronning Maud Land, Antarctica: Constraints from melt inclusions and thermodynamic modeling. American Mineralogist, 103 (4) 610-622 doi:10.2138/am-2018-6214 | Journal (article/letter/editorial) | | Dronning Maud Land (DML) in East Antarctica. This region has a complex Mesoproterozoic to Paleozoic geological...greater intensity of the asymmetric H2O band in the region 3200–3600 cm–1 of the spectra acquired on re-homogenized...diamond-bearing rocks from the Kokchetav Massif (Hwang et al. 2004, 2009) and the Bohemian Massif (Kotkova et al. 2014;...AL.: NANOGRANITOIDS IN ULTRAMAFIC GRANULITE cristobalite in nanogranitoids trapped under high-P conditions...granulites from the northwestern portion of the Bohemian Massif, in the Polish Sudetes. Ferrero et al. (2016b) |  | | Journal (article/letter/editorial) | | of coesite in Dora Maira and the Western Gneiss Region of Norway (Chopin 1984; Smith 1984), more than...inclusions (kokchetavite ± siliceous glass ± cristobalite/quartz) in garnet and clinopyroxene from a garnet-pyroxene...clinopyroxene from a dolomitic marble from the Kokchetav Massif, Kazakhstan (Hwang et al. 2004). Polycrystalline...Kokchetavite: A new potassium-feldspar polymorph from the Kokchetav ultrahigh-pressure terrain. Contributions to Mineralogy |  | Hwang, S.-L., Yui, T.-F., Chu, H.-T., Shen, P., Iizuka, Y., Yang, H.-Y., Yang, J., Xu, Z. (2008) Hematite and magnetite precipitates in olivine from the Sulu peridotite: A result of dehydrogenation-oxidation reaction of mantle olivine?. American Mineralogist, 93 (7) 1051-1060 doi:10.2138/am.2008.2784 | Journal (article/letter/editorial) | | titanite with oriented coesite needles from the Kokchetav UHP marble (Ogasawara et al. 2002). On the other...included. (FeOOH), bernalite [Fe(OH)3], and β-cristobalite. These oxidation products were suggested to...was mainly driven by buoyancy bringing the rock massif from mantle depths >100 km (750–970 °C) to the...be related to extension, which resulted in the massif being brought to the surface. The magnetite and..., and Wang, S. (1996) Alpe Arami: A peridotite massif from depths of >300 km. Science, 271, 1841–1845 |
|
