 | 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 ∗...‡Department 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 U–Pb 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) | | 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) | | 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...Three minerals (clinopyroxene, plagioclase and apatite) were analysed f r o m one o f the gabbro samples...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 |  | | 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 |  | 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) | | intrusive complex 22 (NEIIC). 23 A new apatite U-Pb date of ~1170 Ma indicates the age of a nearby...aeromagnetic and gravity anomalies over a ~16,000 km2 area of 32 northeast Iowa and southeast Minnesota have...cut by 40 intrusions of the NEIIC, and a new apatite U-Pb date of ~1170 Ma on one of the dikes thus...including the MRS-related Coldwell Complex of Ontario. The largest of the zoned intrusions are 48 ~40...Keywords 55 Midcontinent Rift System 56 Apatite geochronology 57 Magnetic anomaly data 58 |  | | Journal (article/letter/editorial) | | volcaniclastic breccia complex, northwestern Ontario, Canada Received: 10 January 2005 / Accepted: 6 June...include: albite; potassium feldspar; quartz; calcite; apatite; and phenakite. Accessory minerals include: aegirine-jervisite;...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...alkaline complex and 20 km south of the Prairie Lake carbonatite complex (Fig.1). Although the term ‘diatreme’ |  | | 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...covering a surface area of approximately 39 km 2 in the northeast corner of Lake Superior (Fig. 1), were |  | | 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. Honoré carbonatite and other sources accounting for only for 7 and...individual petrographically-defined units of carbonatite contain distinct suites of pyrochlore. Bulk rock...carbonatites. The process results in the decomposition of apatite and magnetite, removal of soluble carbonates and...10 times or more above those of the primary carbonatite. Commonly, pyrochlores in laterites are fine grained |  | | Journal (article/letter/editorial) | | hollandite from the Schryburt Lake carbonatite complex, northwestern Ontario, Canada R. GARTHPLATr Department...Department of Geology, Lakehead University, Thunder Bay, Ontario, Canada P7B 5El Abstract Within a suite of...ultramafic rocks of the Schryburt Lake carbonatite complex of northwestern Ontario, loparite and Ba-Fe hollandite...of Mg-olivine, phlogopite, magnetite, ilmenite, apatite and carbonate (generally calcite) with minor Mg-salite...been attributed to the periodic introduction of carbonatite-derived fluids enriched in REE, Na and Nb into |  | 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, Gremyakha–Vyrmes, Turiy... néphéline, syénite, ijolite, altération, lac Prairie, Pilansberg, Sakharjok, Gremyakha–Vyrmes, 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) | | 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 “Content”) is governed... copyright is held by the Queen’s 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 |  | Çimen, 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) | | Sciences, Carleton University, Ottawa, Ontario, Kl S 5B6, Canada 4Department of Chemistry, Tokyo Metropolitan...Tapira) and Canada (Borden, Oka, and Prairie Lake) as well as one syenite (Poohbah Lake, Canada). Mineral...Mineral phases used were apatite, forsterite, diopside, calcite, monticellite, and perovskite. Large amount...found in most samples. An apatite sample from the Prairie Lake carbonatite showed a 136Xe/13°Xe ratio...Stepwise heating studies of an apatite from the Jacupiranga carbonatite indicate that the high temperature |  | | 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 Å (I) hkl]: ~3.29 (100)... 360‑1395 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 |  | | Journal (article/letter/editorial) | | Ž1999. 249–258 Ion microprobe U–Pb dating of apatite Yuji Sano ) , Takayuki Oyama, Kentaro Terada, Hiroshi...apatites, Pb isotopes and PbrU ratios of five apatite samples with different ages have been measured...University. The ‘PRAP’ apatite from a carbonatite complex at Prairie Lake, Ontario with a 207 Pb)– 206 Pb)...Oqr238 Uq calibration. Apatites from the Poohbah Lake alkaline complex give 204 Pbr206 Pb– 238 Ur206 Pb...of 2706 " 46 Ma Ž2 s .. For the remaining three apatite samples the 204 Pbr206 Pb– 238 Ur206 Pb and 204 |  | Wu, Fu-Yuan, Yang, Yue-Heng, Mitchell, Roger H., Bellatreccia, Fabio, Li, Qiu-Li, Zhao, Zi-Fu (2010) In situ U–Pb and Nd–Hf–(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 |  | | Journal (article/letter/editorial) | | Daniel S. Barker Calculated silica activities in carbonatite liquids Received: 21 April 2000 / Accepted:...11 July 2001 Ó 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)...carbonatites, because the silica activity in carbonatite magmas is too low to stabilize these minerals...activity coecients for a silica component in carbonatite liquids are 1, so that small mole fractions |  | | 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 © Queen’s Printer for Ontario, 1999. Open File Reports of the Ontario Geological |  | | Report (issue) | | Main PAGE Asarco Inc. Geological map of Buchans area, Newfoundland. s.n., 1983?] M(130)2 B852a [Newfoundland...530 B264m Berg, Richard B. Guidebook of the Helena area, west-central Montana. [Butte] : Montana Bureau...Mineral resources of the North Pole Ridge Study Area, Gilliam and Sherman Counties, Oregon. Spokane,...canal, Pahvent Valley, Millard County, Utah. Salt Lake City, Utah : Utah Division of Water Rights, 1987...(U.S.). Aeromagnetic map of the Creede Mining District, southwestern Colorado. [Reston, Va.] : U.S. Geological |  | 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 |  | | Journal (article/letter/editorial) | | trapped fissiogenic REE and nucleogenic Pu in apatite and Pb evolution at the Oklo natural reactor KENJI...which contains high-grade uraninite and massive apatite concretions. In order to study distribution behavior...analyses of Nd, Sm, Gd, Pb and U in uraninite and apatite from the sample were performed by Sensitive High...(SHRIMP). Sm and Gd isotopic ratios of uraninite and apatite show evidence of neutron irradiation with fluence...Judging from the isotopic anomalies of Nd and U, the apatite coexisting with the uraninite plays an important |  | Vrublevskii, V.V., Bukharova, O.V., Nebera, T.S., Sveshnikova, V.L. (2019) Composition and origin of rare-metal (Nb–Ta, 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...Carbonatites are remarkable in bearing high-temperature apatite-group phosphates and rare-metal (Nb–Ta, REE) and |  | 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) | | Accepted Manuscript Hydrothermal apatite SIMS Th-Pb dating: Constraints on the timing of low-temperature...Liao, Zhiqiang Zhang, Qiuli Li , Hydrothermal apatite SIMS Th-Pb dating: Constraints on the timing of...journal pertain. ACCEPTED MANUSCRIPT Hydrothermal apatite SIMS Th–Pb dating: constraints on the timing of...deposits. PT Here, we demonstrate that hydrothermal apatite associated with Au from the large Nibao RI deposit...Cu-, and Au-rich rims. Euhedral and subhedral apatite forms a MA mosaic texture and is intergrown with |
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