| TorrĂł, L., Villanova, C., Castillo, M., Campeny, M., Gonçalves, A. O., Melgarejo, J. C. (2012) Niobium and rare earth minerals from the Virulundo carbonatite, Namibe, Angola. Mineralogical Magazine, 76 (2) 393-409 doi:10.1180/minmag.2012.076.2.08 | Journal (article/letter/editorial) | and rare earth minerals from the Virulundo carbonatite, Namibe, Angola L. TORROÌ1, C. VILLANOVA1, M. CASTILLO1...Agostinho Neto, Av. 4 de Fevereiro 7, 815 Luanda, Angola [Received 27 January 2011; Accepted 7 July 2011;...Editor: Hilary Downes] ABSTRACT The Virulundo carbonatite in Angola is one of the largest in the world...have produced late-stage carbonates, goethite, hollandite and rare earth element (REE) minerals (mainly...WORDS : Angola, carbonatite, pyrochlore, REE, magmatic, hydrothermal, weathering, Virulundo. Introduction | | Melgarejo, Joan C., Costanzo, Alessandra, Bambi, Aurora C.J.M., Gonçalves, Antonio O., Neto, AndrĂ©s 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) | species in plutonic carbonatites: The Tchivira case, Angola Joan C. Melgarejo a, Alessandra Costanzo b,â, Aurora...Geologia, Universidade Agostinho Neto, Luanda, Angola a r t i c l e i n f o Article history: Received...Tchivira carbonatite, located 400 km south of Luanda (Angola), is a good example of a carbonatite body produced...Geological setting Most of the carbonatite complexes in Angola are found in the Lucapa structure (deVries Lapido-Loureiro...1200 km set of faults oriented NEâSW that cut the AngolaâCongo craton (Issa Filho et al., 1991). Different | | Uher, Pavel, Ondrejka, Martin, BaÄĂk, Peter, Broska, Igor, KoneÄnĂœ, Patrik (2015) Britholite, monazite, REE carbonates, and calcite: Products of hydrothermal alteration of allanite and apatite in A-type granite from StupnĂ©, Western Carpathians, Slovakia. Lithos, 236. 212-225 doi:10.1016/j.lithos.2015.09.005 | Journal (article/letter/editorial) | 20 0.76 1.07 0.05 â0.45 â0.01 99.59 Graciosa Province in Brazil (Vlach and Gualda, 2007). Generally...with synchysite-(Ce), cerite-(Ce), goethite, hollandite, and barite precipitated during late-stage supergene...supergene alteration processes in Virulundo carbonatite, Angola (TorrĂł et al., 2012). The above-mentioned...and rare earth minerals from the Virulundo carbonatite, Namibe, Angola. Mineralogical Magazine 76, 393â409...granites from the Morro Redondo Complex, Graciosa Province, Southern Brazil: occurrence and compositional | | Giebel, R. Johannes, Gauert, Christoph D.K., Marks, Michael A.W., Costin, Gelu, Markl, Gregor (2017) Multi-stage formation of REE minerals in the Palabora Carbonatite Complex, South Africa. American Mineralogist, 102 (6) 1218-1233 doi:10.2138/am-2017-6004 | Journal (article/letter/editorial) | low-temperature phase in the Virulando carbonatite (Angola) where it formed during late-stage supergene alteration...associated with synchysite, cerite, goethite, hollandite, and baryte (TorrĂł et al. 2012). In all, britholite...to mine: the key example of the Kola Alkaline Province, Mineralogical Society (U.K.) Series, 10, 247â291...and rare earth minerals from the Virulundo carbonatite, Namibe, Angola. Mineralogical Magazine, 76, 393â409...to mine: the key example of the Kola Alkaline Province, 503 p. The Mineralogical Society of Great Britain | | | Journal (article/letter/editorial) | (see below), and carbonatites in the East Sayan province, especially the Nizhnesayanskii and Bolshyetaginskoye...(Kogarko et al., 1995). Although the Kola Alkaline Province contains many carbonatites which have Nbpotential...Brazil CatalĂŁo-I AraxĂĄ Other Fen, Norway Bonga, Angola Mbeya, Tanzania 0.41 0.45 0.56 0.66 0.12 0.16...al., 2006); Virulundo, Anglo (TorrĂł et al., 2012); Tchivira, Bonga, and Catanda, Angola (Bambi et al...melilitite lavas of the Alto ParanaĂba igneous province (Cordeiro et al., 2011; Gibson et al., 1995) | | Kozlov, Evgeniy, Fomina, Ekaterina, Sidorov, Mikhail, Shilovskikh, Vladimir, Bocharov, Vladimir, Chernyavsky, Alexey, Huber, MiĆosz (2020) The Petyayan-Vara Carbonatite-Hosted Rare Earth Deposit (Vuoriyarvi, NW Russia): Mineralogy and Geochemistry. Minerals, 10 (1) 73 doi:10.3390/min10010073 | Journal (article/letter/editorial) | bastnĂ€site; metasomatism; Vuoriyarvi; Kola alkaline province 1. Introduction Rare-earth elements (REEs) are...earth carbonatites (RETherefore, carbonatites) in Angola [5,6], Australia for more 50% of the global resources...subjectNamibia of rare earth carbonatites (RE carbonatites) Angola [5,6], Australia [7â9], Brazil Mongolia [52,53]...alkaline complexes of the Devonian Kola Alkaline Province [84]. The geological structure of this The Vuoriyarvi...alkaline complexes of the Devonian Kola Alkaline Province [84]. The geological structure of this geochemically | | Chakhmouradian, Anton R., Reguir, Ekaterina P., Kressall, Ryan D., Crozier, Jeremy, Pisiak, Laura K., Sidhu, Ravinder, Yang, Panseok (2015) Carbonatite-hosted niobium deposit at Aley, northern British Columbia (Canada): Mineralogy, geochemistry and petrogenesis. Ore Geology Reviews, 64. 642-666 doi:10.1016/j.oregeorev.2014.04.020 | Journal (article/letter/editorial) | Nb-rich rutile and brookitei (monazite, barite, hollandite) 2897.9 Mt at 2.81% Nb2O5 Crown deposit, Mount...also apply to the MianningâDechang carbonatite province in China (Hou et al., 2006; Wang et al., 2001;...Kola Alkaline Province in the context of a Scandinavian North Atlantic Alkaline Province. In: Wall, F...to Mine: the Key Example of the Kola Alkaline Province. Mineral. Soc., London, pp. 1â43. Bush, V.A.,...to Mine: the Key Example of the Kola Alkaline Province. Mineral. Soc., London, pp. 293â340. Chakhmouradian | | | Journal (volume) | February 1987 in Luc Yen (a small city in Yen Bai province, N- Vietnam), this country is an important source...from Burma. On the way from the capital of the province, which is also named Yen Bai, to Luc Yen, a new...and rose quartz from the Borborema Pegmatitic Province (Brazil) irradiated with high gamma doses Barreto...granitic pegmatities located in Borborema Pegmatite Province (BPP, Brazil), it is common to find areas of rose...â about 150,000 km2. The Timan zeolite-bearing province dominated by analcime was discovered in the second |
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