 | Simandl, G. J., Petrus, J. A., Leybourne, M. I., Paradis, S., Akam, C. (2019) Primary fersmite and the direct indicator mineral concept, Mount Brussilof, British Columbia. GeoFile 2019-06. British Columbia Geological Survey | Report (issue) | | Introduction Fersmite Fersmite ([Ca,Ce,Na][Nb,Ta,Ti]2[O,OH,F]6) is a complex mineral, occurring commonly...product of pre-existing niobate minerals in carbonatites, alkaline and peralkaline intrusions, and rare...element pegmatites. Most well-documented primary fersmite localities are found in Europe and correspond...formed during metamorphism and uplift. Globally, fersmite is the third most important Nb-ore mineral after...properties of fersmite contribute to its effective use as a direct indicator mineral for carbonatites and related |  | | Report (issue) | | Ministry of Energy, Mines and Petroleum Resources British Columbia Geological Survey Paper 2019-01 Geological...Ministry of Energy, Mines and Petroleum Resources British Columbia Geological Survey Paper 2019-01 Ministry...Resources Mines and Mineral Resources Division British Columbia Geological Survey Recommended citation...petrology of rocks in the Decar area, central British Columbia: Petrologically constrained subdivision of...Fieldwork 2018, British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological |  | | Journal (article/letter/editorial) | | secondary niobium mineral deposits associated with carbonatites Roger H. Mitchell ⁎ Department of Geology, Lakehead...Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada a r t i c l e i n f o Article history: Received...17 March 2014 Available online xxxx Keywords: Carbonatites Niobium ore deposits Pyrochlore Laterite Supergene...economic deposits of niobium associated with carbonatites. The Brazilian supergene deposits account for...production of Nb, with the primary St. Honoré carbonatite and other sources accounting for only for 7 and |  | | Journal (article/letter/editorial) | | https://doi.org/10.1080/25726838.2018.1516935 Carbonatites: related ore deposits, resources, footprint...Suzanne Paradisc a c British Columbia Geological Survey, Victoria, BC, Canada; bSchool of Earth and...Victoria, BC, Canada; Natural Resources Canada NRCan, Geological Survey of Canada, Sidney, BC, Canada ABSTRACT...ABSTRACT ARTICLE HISTORY Most carbonatites were emplaced in continental extensional settings and range in...alkaline silicate igneous rocks, forming alkaline-carbonatite complexes, but some occur as isolated pipes, |  | | Journal (article/letter/editorial) | | “Coltan,” that caused Ta mines in Australia and Canada to be placed on care and maintenance. More recently...placer deposits and weathered crusts overlying carbonatite and peralkaline complexes account for the majority...majority of Ta production. Several carbonatite-related deposits (e.g. Upper Editorial handling: D. Huston...(Ring Road), Victoria, BC, Canada V8P 5C2 G. J. Simandl (*) British Columbia Ministry of Energy and Mines...Victoria, BC, Canada V8W 9N3 e-mail: george.simandl@gov.bc.ca Fir and Crevier, Canada) are being considered |  | | Journal (article/letter/editorial) | | composition of apatite in carbonatites from the Blue River area (British Columbia, Canada) and mineralogy of...composition of apatite in carbonatites from the Blue River area (British Columbia, Canada) and mineralogy of...COMPOSITION OF APATITE IN CARBONATITES FROM THE BLUE RIVER AREA (BRITISH COLUMBIA, CANADA) AND MINERALOGY OF...University, 955 Oliver Road, Thunder Bay, Ontario, Canada P7B 5E1 (rmitchel@lakeheadu.ca) Thomas Chudy, Department...University of British Columbia, Earth Science Building, Vancouver, British Columbia, Canada V6T 1Z4 (tchudy@eos |  | 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) | | investigations of carbonatites from the Blue River Region, British Columbia (Canada): Implications for...investigations of carbonatites from the Blue River Region, British Columbia (Canada): Implications for...Investigations of Carbonatites From the Blue River Region, British Columbia (Canada): Implications for...Oliver Road, Thunder Bay, Ontario P7B D MA 5E1, Canada PT E Corresponding Author: Okay Çimen E-mail:...the Fir, Felix, Gum, and Howard Creek carbonatites from the Blue River Region, British Columbia (Canada) |  | | Journal (article/letter/editorial) | | niobium and tantalum. In terms of economic value, carbonatites are almost always specialized exclusively in...niobium, metallogeny of tantalum, tantaloniobates, carbonatite, nepheline syenite, alkali granite, syenite,...less than 100000 tons of Nb2О5 (including past mining, if it took place). The number of such objects...(Fennoscandian) Shield, namely, Siilinjärvi carbonatite and Saharjok nepheline–syenite (Zozulya et al...Elk Creek; (29) Afrikanda; (30) Aley; (31) Upper Fir; (32) Chuktukon; (33) Toongi; (34) Baerzhe; (35) |  | | Journal (article/letter/editorial) | | consumption led to the respective increase in its mining. The quantity of primary tantalum extracted in...2017, and references therein). The growth in the mining and consumption determined a high level of interest...with a resource estimation (including the former mining if there was any) of no less than 2000 t of Та2O5...(d) nepheline syenites (foidic type), and (e) carbonatite complexes (carbonatitic type). A noticeable part...in geological exploration and in the reports of mining companies. Such resources can hardly be taken into |  | | Journal (article/letter/editorial) | | methods that are commonly applied in artisanal mining operations in Africa and South America. The current...pegmatites, alkaline granites and especially in carbonatites, they are more abundant than columbite-tantalite...foordite-thoreaulite, simpsonite, rankamaite, cesplumtantite, fersmite, rynersonite, liandradite, petscheckite and others...diagrams are normalized to C1 chondrite. Median (thick blue lines), P25 and P75 (thick black lines) and P90...6 Ga); Congo Craton (2.49 Ga); Tanco (Manitoba, Canada; 2.64 Ga); Wodgina (Western Australia; 2.9 Ga); |  | | Report (issue) | | Chapter 6 Tantalum mining and processing in Western Australia Major hard-rock mining and processing ........................ 31 Medium-scale hard-rock mining and processing .................................................................... 36 Alluvial mining ..................................................................................... 39 Arthur River ..................................................International tantalum resources — exploration and mining Canada, Alaska, and Greenland .................... |  | | Journal (volume) | | Strashimir Borisov Strashimirov, University of Mining and Geology “St. Ivan Rilski” (BG), Nada Vasković...........537 GP82 Alkaline rocks/kimberlites/carbonatites...............................................trace-element patterns similar to kimberlites and carbonatites, with high LREE/HREE, and high contents of alkali...Geological Sciences, University of Manitoba, Winnipeg, Canada (frank_hawthorne@umanitoba.ca) Recent advances...consideration remains the environmental impacts of mining uranium and the final disposition of nuclear wastes |
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