| WU, FU-YUAN, MITCHELL, ROGER H., LI, QIU-LI, ZHANG, CHANG, YANG, YUE-HENG (2017) Emplacement age and isotopic composition of the Prairie Lake carbonatite complex, Northwestern Ontario, Canada. Geological Magazine, 154 (2) 217-236 doi:10.1017/s0016756815001120 | Journal (article/letter/editorial) | composition of the Prairie Lake carbonatite complex, Northwestern Ontario, Canada F U - Y UA N W U â...âĄDepartment of Geology, Lakehead University, Ontario, P7B 5E1, Canada (Received 3 September 2015; accepted...Alkaline rock and carbonatite complexes, including the Prairie Lake complex (NW Ontario), are widely distributed...related to a mantle plume. The Prairie Lake complex is composed of carbonatite, ijolite and potassic nepheline...syenite. Two samples of baddeleyite from the carbonatite yield UâPb ages of 1157.2 ± 2.3 and 1158.2 ± | | | Journal (article/letter/editorial) | long rift are exposed only in the Lake Superior region. In the Lake Superior region, the rift cuts across...clastic sedimentary rocks. Beneath the center of Lake Superior the volcanic and sedimentary rocks are...in an arcuate trend from eastern Kansas through Lake Superior to the Grenville front 356 (Fig. 1 )...although rift-related rocks are only exposed in the Lake Superior region (Fig. 2). The rift system contains...center of Lake Superior (Behrendt et al., 1988; Cannon et al., 1989). Where exposed in the Lake Superior | | | Journal (article/letter/editorial) | Department of Geology, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario, Canada M5S 2C6 Received January...subdivided into three intrusive centers. A detailed U-Pb zircon/baddeleyite age study of five samples indicates...history. These data, combined with published U-Pb zircon/baddeleyite results for other rift related igneous...Universit6 du Qu6bec/~ Montreal, Montreal, Qu6bec, Canada H3C 3P8 Offprint requests to: L.M. Heaman ing...published isotopic data for the n e a r b y Prairie L a k e carbonatite (Bell and Blenkinsop 1987) and c o n | | | Journal (article/letter/editorial) | volcaniclastic breccia complex, northwestern Ontario, Canada Received: 10 January 2005 / Accepted: 6 June...uraninite; vanadian crichtonite; xenotime-(Y); zircon and hydrated zircon; and zirconthorite-coïŹnite solid solutions...of dolomite-ankerite and calcite with accessory zircon, xenotime, and monazite. Barite, baotite and Barich...Lakehed University, 955 Oliver Road, Thunder Bay, Ontario, CANADA P7B 5E1 E-mail: rmitchel@lakeheadu.ca...approximately 25 km northwest of the town of Marathon (Ontario), 1 km from the western margin of the Coldwell | | Drenth, Benjamin J., Souders, A. Kate, Schulz, Klaus J., Feinberg, Joshua M., Anderson, Raymond R., Chandler, Val.W., Cannon, William F., Clark, Ryan J. (2020) Evidence for a concealed Midcontinent Rift-related northeast Iowa intrusive complex. Precambrian Research, 347. 105845pp. doi:10.1016/j.precamres.2020.105845 | Journal (article/letter/editorial) | aeromagnetic and gravity anomalies over a ~16,000 km2 area of 32 northeast Iowa and southeast Minnesota have...including the MRS-related Coldwell Complex of Ontario. The largest of the zoned intrusions are 48 ~40...Midcontinent Rift System (MRS) are exposed in the Lake 62 Superior region, where they host several different...detail for several decades. However, away from the Lake Superior 65 region, the MRS is covered by Paleozoic...penetrations of Proterozoic rocks in the region. The area of the 4 86 NEIIC is covered by 200-700 m of | | | Journal (article/letter/editorial) | Deadhorse Creek diatreme complex, northwestern Ontario, Canada R. GARTHPLATTANDROGERH. MITCHELL Department...Department of Geology, Lakehead University, Thunder Bay, Ontario, Canada P7B 5El Abstract The main mineralized...Deadhorse Creek diatreme complex, northwestern Ontario possesses an exotic mineralogy. Mineralization...U), Be, Ba and Sr. Minerals include phenacite, zircon, uraninite, thorite, monazite-(Ce), xenotime-(Y)...related Coldwell alkaline complex and/or the Prairie Lake complex are both potential sources. Both complexes | | Liferovich, R. P., Mitchell, R. H., Zozulya, D. R., Shpachenko, A. K. (2006) Paragenesis and composition of banalsite, stronalsite, and their solid solution in nepheline syenite and ultramafic alkaline rocks. The Canadian Mineralogist, 44 (4) 929-942 doi:10.2113/gscanmin.44.4.929 | Journal (article/letter/editorial) | Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada Dmitriy R. ZOZULYA and Arkadiy...banalsite, nepheline, syenite, ijolite, alteration, Prairie Lake, Pilansberg, Sakharjok, GremyakhaâVyrmes, Turiy... nĂ©phĂ©line, syĂ©nite, ijolite, altĂ©ration, lac Prairie, Pilansberg, Sakharjok, GremyakhaâVyrmes, Turiy...nepheline syenite and alkaline ultramafic rocks: the Prairie Lake complex of alkaline rocks and carbonatites,... Superior Alkaline Province, northwestern Ontario, Canada, the Pilansberg peralkaline complex, South | | | Journal (article/letter/editorial) | of Geology, Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada a r t i c l e i n f o Article...production of Nb, with the primary St. HonorĂ© carbonatite and other sources accounting for only for 7 and...individual petrographically-deïŹned units of carbonatite contain distinct suites of pyrochlore. Bulk rock...10 times or more above those of the primary carbonatite. Commonly, pyrochlores in laterites are ïŹne grained...[AraxĂĄ and CatalĂŁo-II (Brazil) and St. HonorĂ© (Canada)]. All produce ferroniobium alloy from pyrochlore | | | Journal (article/letter/editorial) | U/Pb, Th/Pb as well as Pb/Pb dates from several carbonatite complexes from Europe and North America are presented...Canadian Shield. Other, less well-defined, events in Canada include magmatism at 1770 Ma from Argor, 570 Ma...at 360 Ma from the Canadian Cordillera. One carbonatite from the Ukrainian Shield (Chernigovka) has been...University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada e-mail: arukhlov_ablinova@shaw.ca Present...Building, 4999 - 98 Avenue, Edmonton, Alberta T6B 2X3, Canada of plume magmatism and associated continental | | | Report (issue) | GOVERN YOUR USE OF THIS DOCUMENT Your use of this Ontario Geological Survey document (the âContentâ) is governed... copyright is held by the Queenâs Printer for Ontario. It is recommended that reference to the Content...form: Ontario Geological Survey 2020. Summary of Field Work and Other Activities, 2020; Ontario Geological...gold database; in Summary of Field Work, 2020, Ontario Geological Survey, Open File Report 6370, p.10-1...670-5691 Toll-Free: 1-888-415-9845, ext. 5691 (inside Canada, United States) Pubsales.ndm@ontario.ca The Purchase | | | Journal (article/letter/editorial) | (Iron Hill, Wyoming, USA) and carbonatite (Prairie Lake, Ontario, Canada) showed that the early product...strongest X-ray diffraction lines, measured for the Prairie Lake material, are [dobs in Ă
(I) hkl]: ~3.29 (100)... 360â1395 Ellice Avenue, Winnipeg, MB R3G 3P2, Canada e-mail: tania.martins@gov.mb.ca A. R. Chakhmouradian...Manitoba, 125 Dysart Road, Winnipeg, MB R3T 2N2, Canada e-mail: chakhmou@cc.umanitoba.ca L. Medici Istituto...USA), calcite carbonatites from Prairie Lake (northwestern Ontario, Canada) and Kontozero (Kola Peninsula | | Ăimen, Okay, Kuebler, Corinne, Simonetti, Stefanie S., Corcoran, Loretta, Mitchell, Roger, Simonetti, Antonio (2019) Combined boron, radiogenic (Nd, Pb, Sr), stable (C, O) isotopic and geochemical investigations of carbonatites from the Blue River Region, British Columbia (Canada): Implications for mantle sources and recycling of crustal carbon. Chemical Geology, 529. 119240 doi:10.1016/j.chemgeo.2019.07.015 | Journal (article/letter/editorial) | carbonatites from the Blue River Region, British Columbia (Canada): Implications for mantle sources and recycling...carbonatites from the Blue River Region, British Columbia (Canada): Implications for mantle sources and recycling...Carbonatites From the Blue River Region, British Columbia (Canada): Implications for Mantle Sources and Recycling...University, 955 Oliver Road, Thunder Bay, Ontario P7B D MA 5E1, Canada PT E Corresponding Author:...carbonatites from the Blue River Region, British Columbia (Canada). These sill-like occurrences were intruded into | | Wu, Fu-Yuan, Yang, Yue-Heng, Mitchell, Roger H., Bellatreccia, Fabio, Li, Qiu-Li, Zhao, Zi-Fu (2010) In situ UâPb and NdâHfâ(Sr) isotopic investigations of zirconolite and calzirtite. Chemical Geology, 277 (1) 178-195 doi:10.1016/j.chemgeo.2010.08.007 | Journal (article/letter/editorial) | Department of Geology, Lakehead University, Ontario, Canada, P7B 5E1 c Dipartimento di Scienze Geologiche...isotopes Zirconolite Calzirtite In situ analysis Carbonatite a b s t r a c t Although the calcium- and titanium-bearing...occurring at Phalaborwa (South Africa), Prairie Lake (Canada), Afrikanda and Kovdor (Kola, Russia), Guli...of igneous and metamorphic rock types. Of these, zircon (ZrSiO4) and baddeleyite (ZrO2), are very important...have been conducted, it is generally accepted that zircon and baddeleyite are not suitable for Sr and Nd | | | Report (issue) | Ontario Geological Survey Open File Report 6000 Summary of Field Work and Other Activities 1999 1999...1999 ONTARIO GEOLOGICAL SURVEY Open File Report 6000 Summary of Field Work and Other Activities 1999...Marshall Lake volcano on the northern margin of eastern Wabigoon Subprovince, northwestern Ontario; in Summary...Summary of Field Work and Other Activities 1999, Ontario Geological Survey, Open File Report 6000, p.23-1...Printer for Ontario, 1999 © Queenâs Printer for Ontario, 1999. Open File Reports of the Ontario Geological | | | Journal (article/letter/editorial) | University. The âPRAPâ apatite from a carbonatite complex at Prairie Lake, Ontario with a 207 Pb)â 206 Pb) age...Oqr238 Uq calibration. Apatites from the Poohbah Lake alkaline complex give 204 Pbr206 Pbâ 238 Ur206 Pb...Sciences, Hiroshima University. In contrast to zircon for which a radiogenic-isotope ratios are evaluated...= 100 mm. extracted from the alkaline rocks of Ontario which are widely distributed over a large part...Shield ĆœFig. 1.. POAP was derived from the Poohbah Lake alkaline complex, an Archean undersaturated potassic | | | Journal (article/letter/editorial) | Daniel S. Barker Calculated silica activities in carbonatite liquids Received: 21 April 2000 / Accepted:...11 July 2001 Ă Springer-Verlag 2001 Abstract Carbonatite magmas precipitate silicates, in addition to...assemblages provide tests of alternative sources (carbonatite magma, coeval silicate magma, or older rock)...silica activity in carbonatite magmas is too low to stabilize these minerals. Zircon and titanite should...activity coeÂcients for a silica component in carbonatite liquids are 1, so that small mole fractions | | | Journal (article/letter/editorial) | composition of the Prairie Lake carbonatite complex, Northwestern Ontario, Canada Wu, F.-Y., Mitchell...gabbroic intrusion in the Hekou area, SW China: constraints from SIMS UâPb zircon geochronology and elemental...and electronic access, is ÂŁ868 (US $1476 in USA, Canada and Mexico). The electronic-only price available...(US $1229 in USA, Canada and Mexico). Single parts are ÂŁ164 net (US $279 in USA, Canada and Mexico) plus...Road, Cambridge CB2 8BS. Subscriptions in the USA, Canada and Mexico should be sent to Cambridge University | | Zhang, Shitao, Chen, Huayong, Shu, Qihai, Zhang, Yu, Chu, Gaobin, Cheng, Jiamin, Tian, Jing (2019) Unveiling growth histories of multi-generational garnet in a single skarn deposit via newly-developed LA-ICP-MS U Pb dating of grandite. Gondwana Research, 73. 65-76 doi:10.1016/j.gr.2019.04.003 | Journal (article/letter/editorial) | and consistent with the majority of published zircon U-Pb ages of the quartz dioritic stock and 40...such as U-Pb dating of magmatic- and hydrothermal zircon (Chiaradia et al., 2009; Deng et al., 2015a; Zhao...spatially related intrusive rocks in the mining area, the ore-forming age and genesis of the deposit...et al., 2011; Zhou et al., 2015). The Edong ore district located in the western of the MLYRB is well endowed...extensively distributed in the Edong ore district with a total PT outcrop area of ~700 km2 (ESM 1 Fig.1; Li et | | Tappe, Sebastian, Brand, Natalie B., Stracke, Andreas, van Acken, David, Liu, Chuan-Zhou, Strauss, Harald, Wu, Fu-Yuan, Luguet, Ambre, Mitchell, Roger H. (2017) Plates or plumes in the origin of kimberlites: U/Pb perovskite and Sr-Nd-Hf-Os-C-O isotope constraints from the Superior craton (Canada) Chemical Geology, 455. 57-83 doi:10.1016/j.chemgeo.2016.08.019 | Journal (article/letter/editorial) | Sr-Nd-HfOs-C-O isotope constraints from the Superior craton (Canada) Sebastian Tappe, Natalie B. Brand, Andreas Stracke...Sr-Nd-Hf-Os-C-O isotope constraints from the Superior craton (Canada), Chemical Geology (2016), doi: 10.1016/j.chemgeo...SR-ND-HF-OS-C-O ISOTOPE CONSTRAINTS FROM THE SUPERIOR CRATON (CANADA) PT Sebastian Tappe a *, Natalie B. Brand a,...Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada * AC Corresponding author (S...Neoproterozoic kimberlite, ultramafic lamprophyre, and carbonatite magmatic activity was widespread across the Canadian-Greenland | | Duan, Zhuang, Gleeson, Sarah A., Gao, Wen-Sheng, Wang, Fang-Yue, Li, Chun-Jia, Li, Jian-Wei (2020) Garnet U-Pb dating of the Yinan Au-Cu skarn deposit, Luxi District, North China Craton: Implications for district-wide coeval Au-Cu and Fe skarn mineralization. Ore Geology Reviews, 118. 103310 doi:10.1016/j.oregeorev.2020.103310 | Journal (article/letter/editorial) | Au-Cu skarn deposit, Luxi District, North China Craton: implications for district-wide coeval Au-Cu and Fe...Au-Cu skarn deposit, Luxi District, North China Craton: implications for district-wide coeval Au-Cu and Fe...Au-Cu skarn deposit, Luxi District, North China Craton: implications for district-wide coeval Au-Cu and Fe...potentially provide robust constraints on the ages of carbonatite, alkaline magmatism and skarn ore formation....garnet from the Yinan Au-Cu skarn deposit in Luxi District, eastern North China Craton, to place tight constraints | | Doroshkevich, Anna G., Veksler, Ilya V., Klemd, Reiner, Khromova, Elena A., Izbrodin, Ivan A. (2017) Trace-element composition of minerals and rocks in the Belaya Zima carbonatite complex (Russia): Implications for the mechanisms of magma evolution and carbonatite formation. Lithos, 284. 91-108 doi:10.1016/j.lithos.2017.04.003 | Journal (article/letter/editorial) | composition of minerals and rocks in the Belaya Zima carbonatite complex (Russia): Implications for the mechanisms...mechanisms of magma evolution and carbonatite formation Anna G. Doroshkevich, Ilya V. Veksler, Reiner Klemd...composition of minerals and rocks in the Belaya Zima carbonatite complex (Russia): Implications for the mechanisms...mechanisms of magma evolution and carbonatite formation, LITHOS (2017), doi:10.1016/j.lithos.2017.04.003 ...composition of minerals and rocks in the Belaya Zima carbonatite complex (Russia): T implications for the mechanisms | | Chen, Maohong, Bagas, Leon, Liao, Xin, Zhang, Zhiqiang, Li, Qiuli (2019) Hydrothermal apatite SIMS Th Pb dating: Constraints on the timing of low-temperature hydrothermal Au deposits in Nibao, SW China. Lithos, 324. 418-428 doi:10.1016/j.lithos.2018.11.018 | Journal (article/letter/editorial) | for one crystal in each sample. A rectangular area was identified around each crystal using ...analyses were performed along traverses across the area covered. The instrument was run with an ACCEPTED...were acquired by rastering a EP T 40 ïŽ 40 ïm2 area. The images show the relative abundances of elements...The spot size was ellipsoidal and ~20 ïŽ 30 ”m in area. A previously reported ThâPb dating protocol was...ÎŽ18 O (5.4 ± 0.2 â°, 2 SD) of co-existing Qinghu zircon (Li et al., 2013). It is reasonable to suggest | | | Book | South Africa 189 3.4.2. The Mackenzie dyke swarm, Canada 190 3.4.3. Parami-Etendeka dykes 192 3.5 Intracontinental...troctolite-anorthosite complexes 8.4.1. Voisey's Bay Ni-Cu-Co 8.5 Komatiite-related magmatic ore deposits...from the 3 Ga Lumby 1ake greenstone be1t, Ontario, Canada. Geo1ogy, 26: 719-722. PARTONE CHAPTERONE...in part, to thermal diffusion and to the surface area of the parcel in question. In other words, the Rayleigh's...S wave velocities at the CMB, within a dome-like area of about 250 km wide and 40 km high. This dome-like | | | Book | pegmatite dyke at the Himalaya mine in the Mesa Grande district, California. From a crystal 19 mm 3, 764 independent...Italy, Penzhofer (1979) Bytownite, An 76, Crystal Bay, Minn., Wainwright (1969) Labradorite, An 69, Roneval...quenched from 1638 K, Kroll (1978) Labradorite, An 66, Lake Co., 0 Oregon, Tagai et al. (1980) z 0 Al content...neutron scattering length z Labradorite, An 66, Lake Co., 0 Oregon, Wenk and Kroll (1984) z Labradorite...identified from Table 3.1 50 Order-Disorder The Lake County labradorite with a, b, c and e diffractions |
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