| | 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 | | 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) | of orbicular ijolites from the Prairie Lake complex, Marathon, Ontario: Textural evidence from rare processes...of orbicular ijolites from the Prairie Lake complex, Marathon, Ontario: Textural evidence from rare processes...of orbicular ijolites from the Prairie Lake complex, Marathon, Ontario: SHANNON E. ZUREVINSKI* and ROGER...Department of Geology, Lakehead University, Thunder Bay, ON, CANADA P7B 5E1 *Corresponding author. Telephone:...ijolite at the 1.1 Ga Prairie Lake Carbonatite Complex (Marathon, Ontario, Canada), and is the only known | | | Journal (article/letter/editorial) | Slate Islands, northeastern Lake Superior R. P. SAGE Geological Branch, Ontario Ministry of Natural Resources...Resources, Toronto, Ontario, Canada MSS 1B3 ABSTRACT The Precambrian rocks of the Slate Islands exhibit...alkalic magmatism. Alkalic intrusive events north of Lake Superior occurred on the Slate Islands. These alkalic...alkalic intrusions are represented by a carbonatite dike in the southeast corner of the island and a set...appear spatially related to the diatremes, and quartz grains displaying deformation lamellae are present | | | Journal (article/letter/editorial) | Department of Geology, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario, Canada M5S 2C6 Received January...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...mantle in the Lake Superior region. ed to represent an aborted Proterozoic rift. In the Lake Superior basin... Recent seismic reflection data from the Lake Superior area indicate that the crust is about 40 km thick | | | Journal (article/letter/editorial) | volcaniclastic breccia complex, northwestern Ontario, Canada Received: 10 January 2005 / Accepted: 6 June...minerals present include: albite; potassium feldspar; quartz; calcite; apatite; and phenakite. Accessory minerals...Lakehed University, 955 Oliver Road, Thunder Bay, Ontario, CANADA P7B 5E1 E-mail: rmitchel@lakeheadu.ca...mineralization is older (1129±6 Ma) than the A-type quartz syenites of the adjacent Coldwell complex (1108±1...approximately 25 km northwest of the town of Marathon (Ontario), 1 km from the western margin of the Coldwell | | | Journal (article/letter/editorial) | pyrochlore-apatitite from The Good Hope Carbonatite, Ontario: A potential Nb deposit Roger H. Mitchell1*...Department of Geology, Lakehead University, Thunder Bay, Ontario, Canada P7B 5E1; 2 The Wahl Prospecting Group...Marathon, Ontario, P0T 2E0 ; 3Plato Gold Corp 1240 Bay Street, Suite 800, Toronto, Ontario, M5R 2A7....The Good Hope carbonatite is located adjacent to the Prairie Lake alkaline rock-carbonatite complex in northwestern...northwestern Ontario. The occurrence is a heterolithic breccia consisting of diverse calcite, dolomite | | | 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 | | 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 | | | 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 | | | 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) | (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...and phonolites) and cannot stably coexist with quartz, enstatite, albite and sanidine. Replacement of | | | 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 | | 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 | | | 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)...rock) for silicate minerals in carbonatites. Quartz, feldspars, and orthopyroxene are unlikely to be primary...carbonatites, because the silica activity in carbonatite magmas is too low to stabilize these minerals | | 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...Calzirtite (Ca2Zr5Ti2O16) is a common mineral in carbonatite and associated pyroxenite and phoscorite (van...(c) Phalaborwa zirconolite Phala-ZrkC; (d) Priarie Lake calzirtite NW-1; (e) Afrikanda calzirtite Afrk-1 | | 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) | the majority of published zircon U-Pb ages of the quartz dioritic stock and 40 Ar-39Ar plateau ages of...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...long. 114°55âČ42âł E) is located in the Edong ore district, MLYRB with proven metal D reserves of 86.3 | | 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 | | 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) | mosaic texture and is intergrown with hydrothermal quartz, sericite, and zoned auriferous pyrite, indicating...paragenetic assemblage of arsenian pyriteâarsenopyriteâquartzâsericiteâilliteâanataseâapatite that is associated...~3 mm wide hydrothermal veins containing white quartz, apatite, and minor sericite and fine-grained disseminated...Zones containing hydrothermal apatite, pyrite, and quartz were located and cut into suitable-sized chips...(REEs) in apatite, oxygen isotopes of apatite and quartz, and ThâPb dating on apatite were performed by | | 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 | | | 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...crust, indicate that it has a granodioritic to quartz dioritic composition. The higher seismic velocities...(predominantly feldspar, lesser pyroxene, with minor garnet, quartz and kyanite). It is probable, however, that the | | Vrublevskii, V.V., Bukharova, O.V., Nebera, T.S., Sveshnikova, V.L. (2019) Composition and origin of rare-metal (NbâTa, REE) and sulfide mineralization in magnesiocarbonatites from the Yenisei Ridge, Central Siberia. Ore Geology Reviews, 111. 102949 doi:10.1016/j.oregeorev.2019.102949 | Journal (article/letter/editorial) | Abstract The Penchenga Neoproterozoic linear fenite-carbonatite complex in the Yenisei Ridge consists of several...208Pb/206Pb) suggest a mantle PREMA + EM 2 source of carbonatite magma and mineralization (including Nb and REE)...Neoproterozoic Penchenga fenite-carbonatite complex in the Southern Trans-Angara area of the Yenisei Ridge which...experimental data (Lee and Wyllie, 1998, 2000), mantle carbonatite magma of this type can originate and emplace...Sklyarov, 2016). In addition to tectonic activity, the area underwent voluminous plutonism (Vernikovsky and | | | Book | Critique of Models for Myrmekite 20.1.4 Symplectite of Quartz and Calcic Plagioclase 20.2 Spherulites, Granophyre...feldspar into denser minerals such as jadeite plus quartz 18 Introduction or coesite from albite and...described as twins, analogous to Dauphine twins in quartz. The crystallographic data are: a 0.5110, c 1.473...microcline, and 8 K-feldspars (A2-A9) from tonalites, quartz diorites, aplites and pegmatites of the Adamello...pegmatite dyke at the Himalaya mine in the Mesa Grande district, California. From a crystal 19 mm 3, 764 independent |
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