| Smith, M.P., Moore, K., Kavecsánszki, D., Finch, A.A., Kynicky, J., Wall, F. (2016) From mantle to critical zone: A review of large and giant sized deposits of the rare earth elements. Geoscience Frontiers, 7 (3) 315-334 doi:10.1016/j.gsf.2015.12.006 | Journal (article/letter/editorial) | the primary igneous source, but the grade is a complex function of igneous source, magmatic crystallisation...molal Na2O+K2O/Al2O3>1.2, and the formation of complex Zr and Ti minerals such as eudialyte – such rocks...sized TE D deposit of the REE. They consist of bastnäsite and monazite developed alongside significant...host marble. The geochronology of the ores is complex, with periods defined from 1230– 1350 Ma (largely...2015). SC Bear Lodge– The Bear Lodge Carbonatite complex is not currently mined, but hosts potentially economic | | Melgarejo, Joan C., Costanzo, Alessandra, Bambi, Aurora C.J.M., Gonçalves, Antonio O., Neto, Andrés B. (2012) Subsolidus processes as a key factor on the distribution of Nb species in plutonic carbonatites: The Tchivira case, Angola. Lithos, 152. 187-201 doi:10.1016/j.lithos.2012.06.024 | Journal (article/letter/editorial) | 187–201 Fig. 1. Geological map of the Tchivira complex. J.C. Melgarejo et al. / Lithos 152 (2012) 187–201...economic point of view: the Seis Lagos deposit in Brazil, the largest Nb deposit in the world, has reserves...superposition of two or more of these processes produces complex mineral successions. The different types of alteration...Ma) riftogenic domain. 4. The Tchivira Complex The Tchivira Complex is a ring structure more than 12 km...sequences in the different carbonatite units are very complex but show some common trends (Fig. 2). 5.1. Primary | | Chakhmouradian, Anton R., Cooper, Mark A., Reguir, Ekaterina P., Moore, Meghan A. (2017) Carbocernaite from Bear Lodge, Wyoming: Crystal chemistry, paragenesis, and rare-earth fractionation on a microscale. American Mineralogist, 102 (6) 1340-1352 doi:10.2138/am-2017-6046 | Journal (article/letter/editorial) | burbankite. The crystals of carbocernaite show a complex juxtaposition of core-rim, sectoral, and oscillatory...and calcite veins at the Vuoriyarvi intrusive complex in northern Karelia, Russia. The name was chosen...Kalkfeld, and Ondurakorume (Namibia), Araxá and Jacupiranga (Brazil), Rocky Boy (Montana, U.S.A.), Sturgeon...2004 to 2013, the Bear Lodge alkaline intrusive complex (ca. lat. 44°30′ N, long. 104°26′ W) was actively...Bull Hill diatreme in the central part of the complex, where numerous carbonatite dikes intersect heterolithic | | Elliott, H.A.L., Wall, F., Chakhmouradian, A.R., Siegfried, P.R., Dahlgren, S., Weatherley, S., Finch, A.A., Marks, M.A.W., Dowman, E., Deady, E. (2018) Fenites associated with carbonatite complexes: A review. Ore Geology Reviews, 93. 38-59 doi:10.1016/j.oregeorev.2017.12.003 | Journal (article/letter/editorial) | have been identified between the presence of more complex veining textures, mineralogy and brecciation in...carbonatite-related laterite deposits at Araxá and 5 90 Catalão II, Brazil (e.g. Mitchell, 2015); carbonatite...produced from 164 parent alkaline magmas via a complex combination of liquid immiscibility and/or 165...of hydrothermal 181 fluids in and around the complex. With very few exceptions (e.g. Arzamastsev et...(1921) in his 186 memoir on the Fen carbonatite complex, Norway. Since the initial studies of the 187 | | | Report (issue) | rare-earth elements, and antimony in China; niobium in Brazil; and platinum-group elements in South Africa and...solubility of fluorite as a function of temperature for complex Na-Ca-Mg-Cl brines from ambient temperatures to...subsurface geology of the Saint-Honoré carbonatite complex in southern Quebec, Canada, and a schematic north-south...chart showing niobium resources and reserves in Brazil, Canada, and the United States...................showing the Rustenburg Layered Suite of the Bushveld Complex, South Africa, the surface trace of significant |
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