 | | Journal (article/letter/editorial) | | volcaniclastic breccia complex, northwestern Ontario, Canada Received: 10 January 2005 / Accepted: 6 June...Ca-Mn-silicate; magnetite; monazite(Ce); niobian vanadian rutile; pyrite; thorite; thorogummite; thortveitite; uraninite;...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) | | 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...decomposition of pyrochlore and formation of Nb-bearing rutile, brookite, and anatase. The Nb contents of the...10 times or more above those of the primary carbonatite. Commonly, pyrochlores in laterites are fine grained |  | | 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...specifically described in this paper. These are Cr-V-Nb rutile, V-rich members of the crichtonite series, and...related Coldwell alkaline complex and/or the Prairie Lake complex are both potential sources. Both complexes |  | | 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 |  | 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 |  | 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 |  | 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) | | 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°55′42″ E) is located in the Edong ore district, MLYRB with proven metal D reserves of 86.3...2017). The exposed strata in the Tonglvshan mining area are the Lower Triassic Daye Formation mainly consisting |  | 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 40 m2 area. The images show the relative abundances of elements...The spot size was ellipsoidal and ~20 30 µm in area. A previously reported Th–Pb dating protocol was...age data are unreliable. Pi et al. (2017) dated a rutile crystal from the ACCEPTED MANUSCRIPT Zhesang |  | 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 |  | 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 | | caxis. The columns are cross-linked, as in the rutile structure, by sharing of apices. Expansion in the...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 |
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