 | Mall�, A., Fontan, F., Melgarejo, J. C., Mata, J. M. (1995) The Albera zoned pegmatite field, Eastern Pyrenees, France. Mineralogy and Petrology, 55 (1) 103-116 doi:10.1007/bf01162582 | Journal (article/letter/editorial) | | in Austria The Albera zoned pegmatite field, Eastern Pyrenees, France A. Mall61, F. Fontan 2, J.-C....Min6ralogie, Universit6 Paul Sabatier, Toulouse, France 3 Departament d'Enginyeria Minera i Recursos Naturals...Summary Four types of pegmatites comprise the zoned pegmatite feld in the eastern sector of the Albera Massif...graphite in the late pegmatite units and in the host-rock. The individual pegmatite types are distributed... Ta, Na, Li, P, Be and REE. According to the pegmatite distribution and their fractionation trends, we |  | | Journal (article/letter/editorial) | | Austria Nb-Ta-Minerals from the Cap de Creus pegmatite field, eastern Pyrenees: distribution and geochemical...mineralogy facilitate distinction of four main pegmatite types at the eastern end of the Pyrenees. Three...trend, with similar enrichment toward the late pegmatite units; a single-crystal trend, with zoning related...expected for a beryl-columbite pegmatite type. In a single pegmatite, the evolution depends on the simultaneous...group end members and re-equilibria with late pegmatite fluids. Zusammenfassung N b - Ta-Minerale aus |  | Gonçalves, , Melgarejo, , Alfonso, , Amores, , Paniagua, , Neto, , Morais, , Camprubí, (2019) The Distribution of Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola. Minerals, 9 (10) 580 doi:10.3390/min9100580 | Journal (article/letter/editorial) | | Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola Antonio Olimpio Gonçalves 1 , Joan-Carles...Abstract: The Giraúl granitic pegmatite field in Angola is composed of five pegmatite types, the most evolved...pegmatites are rich in Nb-Ta oxide minerals and the field has a moderate interest for critical elements such...the evolution of the pegmatites and within each pegmatite body from border to inner zones, and especially...minerals is quite characteristic in granites and pegmatite rocks and gives us information about their petrogenesis |  | Groat, Lee A., Putnis, Andrew, Kissin, Stephen A., Scott Ercit, T., Hawthorne, Frank C., Gaines, Richard V. (1994) Staringite discredited. Mineralogical Magazine, 58 (391) 271-277 doi:10.1180/minmag.1994.058.391.09 | Journal (article/letter/editorial) | | sub-microscopic intergrowth of cassiterite and tapiolite. 'Staringite' is discredited as a valid mineral...STARINGITEwas first described from the granitic pegmatite dykes at Serid6zinho and Pedro Lavreda, Paraiba...locality, staringite occurs as inclusions in tapiolite. The formula proposed was (Fe,Mn)0.5(Sn,Ti)4.5(Ta...occurs as fine irregular grains in contact with tapiolite and wodginite. In Kazahkstan, it occurs as fine...occurrence of staringite in the Georgia Lake pegmatite field of northwestern Ontario, Canada, was reported |  | | Journal (article/letter/editorial) | | oxides from pegmatites of the Cape Cross–Uis pegmatite belt, Namibia WARRICK C. FUCHSLOCH*, PAUL A.M...wfuchsloch@gmail.com Abstract The Cape Cross-Uis pegmatite belt, Damara Orogen, north-central Namibia hosts...Sn-oxide-bearing pegmatites. Columbite-group minerals, tapiolite, cassiterite and minor ixiolite and wodginite...columbite-group minerals for certain elements. Tapiolite This is a 'preproof' accepted article for Mineralogical...Ta-Nboxides from an aqueous fluid at the late-stages of pegmatite petrogenesis is highly debated, significantly |  | | Journal (article/letter/editorial) | | FLUID EVOLUTION IN THE ZONED RARE-ELEMENT PEGMATITE FIELD AT CAP DE CREUS, CATALONIA, SPAIN Pura ALFONSO§...inclusions have been studied in all these types of pegmatite to determine the nature of the fluids involved...formed albite veins and circulated throughout the pegmatite, owing to the development of a network of fractures...alteration that affected the previously formed pegmatite units. In addition, in albite pegmatites, late...direct information on the pegmatite-forming fluids and conditions of pegmatite formation. The coexistence |  | Rao, C., Wang, R. C., Hu, H., Zhang, W. L. (2009) COMPLEX INTERNAL TEXTURES IN OXIDE MINERALS FROM THE NANPING No. 31 DYKE OF GRANITIC PEGMATITE, FUJIAN PROVINCE, SOUTHEASTERN CHINA. The Canadian Mineralogist, 47 (5) 1195-1212 doi:10.3749/canmin.47.5.1195 | Journal (article/letter/editorial) | | MINERALS FROM THE NANPING No. 31 DYKE OF GRANITIC PEGMATITE, FUJIAN PROVINCE, SOUTHEASTERN CHINA Can RAO State...31 granitic pegmatite, a highly evolved spodumene-type pegmatite in the Nanping pegmatite district, southeastern...rarely, columbite in the zone V. Microscopic tapiolite-(Fe) is identified as a product of exsolution...associations of wodginite, columbite–tantalite and tapiolite-(Fe) are characteristic of cassiterite in zone...of hydrothermal fluids at the late stages of pegmatite evolution. The high mobility of Ta in such fluids |  | | Journal (article/letter/editorial) | | Alteration Trends of Microlite from the YeUowknife Pegmatite Field, Northwest Territories, Canada M. A. Wise*...granitic pegmatites in the Archean Yellowknife pegmatite field of the Canadian Shield. The chemistry ofmicrolite...Ta, Sn-oxide minerals from the Yellowknife pegmatite field, Northwest Territories, Canada, rare microscopic...chemistry of microlite from the Yellowknife pegmatite field and its modifications induced by late alteration...Location and Occurrence The Archean Yellowknife pegmatite field is well-known for its abundance of granitic |  | | Journal (article/letter/editorial) | | such as those of the columbite–tantalite group, tapiolite-(Fe) and microlite. It is possible to distinguish...consisting of tantalite-(Fe), tantalite-(Mn) and tapiolite-(Fe). Uranium-rich microlite (up to 6% wt. UO2)...alteration of the pegmatite bodies and formed a second generation of microlite replacing tapiolite, with high...composition of the Sn, Nb and Ta oxide minerals of the pegmatite dikes, suggest that the Cadalso – Casillas de...the La Canalita pegmatite dikes. Keywords: microlite, columbite–tantalite group, tapiolite, cassiterite |  | | Journal (article/letter/editorial) | | Brunswick pegmatite field and the Central Maine Synclinorium of the Oxford pegmatite field, in Maine...characteristics (e.g., Topsham area of the Brunswick pegmatite field). Significant chemical-compositional and structural...and Oxford pegmatite fields. Columbite-group minerals from the Brunswick pegmatite field mainly consist...contents. By comparison, pegmatites from the Oxford field carry columbite-(Fe), columbite-(Mn) and tantalite-(Mn)...structural state of CGM from the Brunswick pegmatite field ranges from highly cation-disordered to cation-ordered |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, Oberthür, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | Schist Belt (western Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia, South Africa) AC 4.3.3.1. Radiometric...5. Mineral chemistry of columbite-tantalite, tapiolite, wodginite and ixiolite in African Ta provinces...3.2. Kamativi Schist Belt 5.3.3. Orange River Pegmatite Belt 5.4. Late Neoproterozoic to early Paleozoic...Compositional variation of columbite-tantalite, tapiolite and wodginite-ixiolite 7.3. Chemical variability...production; other Ta-Nb oxides (TNO) such as tapiolite, wodginite, ixiolite, rutile SC R and pyrochlore-supergroup |  | | Journal (article/letter/editorial) | | from crystallization experiments of tantalite-tapiolite Marieke Van Lichtervelde1,*,†, Francois Holtz2...Toulouse, CNES, CNRS, IRD, UPS, 31400 Toulouse, France 2 Leibniz Universität Hannover, Institute of Mineralogy...Resources (BGR), 30655 Hannover, Germany Abstract Tapiolite [FeTa2O6] and columbite-group minerals [(Fe,Mn)(Ta...influence the compositional gap. In this study, tapiolite and columbite-group minerals (CGM) were crystallized...a size as small as 500 nm were analyzed with a field emission gun (FEG) electron microprobe. The results |  | Černý, P., Chapman, R., Chackowsky, L. E., Ercit, T. S. (1989) A ferrotantalite-ferrotapiolite intergrowth from Spittal a.d. Drau, Carinthia, Austria. Mineralogy and Petrology, 41 (1) 53-63 doi:10.1007/bf01164810 | Journal (article/letter/editorial) | | ferrotantalite and ferrotapiolite occur in a pegmatite in Spittal a.d. Drau, Carinthia. They are associated...Ostalpen in general, and specifically of the Spittal pegmatite, is probably responsible for the recrystallization...Tantalum, niobium, tantalite, tapiolite, mineralogy, geochemistry, pegmatite, Ostalpen, Austria. Zusammenfassung...Mineralparagenese angenornmen werden. Introduction The pegmatite exposed in a feldspar quarry at Spittal a.d. Drau...classic locality of coexisting tantalite and tapiolite. An unpublished report by Angel (1945) was expanded |  | | Journal (article/letter/editorial) | | Ta-bearing phases, but microlite, wodginite, tapiolite and Ta-rich cassiterite also occur. CGM crystals...Keppler, 1997; Linnen, 1998; London, 2008) and field evidences in pegmatites (Dewaele et al., 2015) and...Ercit et al. (1992a). The structural formula of tapiolite and cassiterite were calculated on the basis of...rich phases in the Penouta leucogranite although tapiolite, microlite, and wodginite also occur. Cassiterite...detection limits of the EMPA. Ferrotapiolite Tapiolite is rare; only one crystal of 10 µm was detected |  | Beurlen, Hartmut, Da Silva, Marcelo R. R., Thomas, Rainer, Soares, Dwight R., Olivier, Patrick (2008) Nb–Ta–(Ti–Sn) oxide mineral chemistry as tracer of rare-element granitic pegmatite fractionation in the Borborema Province, Northeastern Brazil. Mineralium Deposita, 43 (2) 207-228 doi:10.1007/s00126-007-0152-4 | Journal (article/letter/editorial) | | mineral chemistry as tracer of rareelement granitic pegmatite fractionation in the Borborema Province, Northeastern...Electron microprobe analyses (EMPA) of columbite, tapiolite, niobian– tantalian rutile, ixiolite and wodginite...possible exploration tool, to trace the degree of pegmatite fractionation and to classify the pegmatites....minerals of the columbite, tapiolite and ixiolite groups, are commonly used in pegmatite provinces worldwide...worldwide as tracers of pegmatite magma fractionation, for the prediction of the metallogenetic potential or petrological |  | Galliski, Miguel Ángel, Márquez-Zavalía, María Florencia, Škoda, Radek, Novák, Milan, Čopjaková, Renata, Pagano, Diego Sebastián (2019) A Ta,Ti–rich oxide mineral assemblage from the Nancy beryl–columbite–phosphate granitic pegmatite, San Luis, Argentina. Mineralogy and Petrology, 113 (5) 687-701 doi:10.1007/s00710-019-00673-z | Journal (article/letter/editorial) | | the Nancy beryl–columbite–phosphate granitic pegmatite, San Luis, Argentina Miguel Ángel Galliski 1 &...assemblage of tantalite-(Mn), tantalian rutile, tapiolite-(Fe), titanowodginite, ferrotitanowodginite, and...hydroxycalciomicrolite occurs in the Nancy granitic pegmatite, San Luis range, Argentina. The Nancy beryl-type...(Li-Cs-Ta) rare-element pegmatite was emplaced in the Paleozoic Conlara pegmatitic field. The assemblage occurs...occurs at the core margin of the pegmatite, forming an irregularly shaped, 18 by 6 cm nodule. The chemical |  | | Journal (article/letter/editorial) | | characterized by high a(Ca2+), producing replacements of tapiolite-(Fe) and ferrowodginite by microlite, of tantalite-(Mn)...envisaged, we propose an anatectic origin of the pegmatite-forming melts during the latest stages of the...a(Ca2+), qui a produit un remplacement de la tapiolite-(Fe) et la ferrowodginite par le microlite, de...these rocks, specifically from the Alpe Rosso pegmatite. Emerald crystals that can be faceted as gems...another pegmatitic body, the Pizzo Marcio North pegmatite (Boscardin et al. 1976). It is worth emphasizing |  | Černý, P., Roberts, W. L., Ercit, T. S., Chapman, R. (1985) Wodginite and associated oxide minerals from the Peerless pegmatite, Pennington County, South Dakota. American Mineralogist, 70 (9-10) 1044-1049 | Journal (article/letter/editorial) | | associatedwith cassiteritecontaining exsolvedtantalite and tapiolite, and with microlite. The chemicalcomposition of...parent pegmatite to the virtual exclusion tities of amblygonite-montebrasite) The Peerless pegmatite near...this pegmatite: plagioclase, qvafiz, muscovite varieties, to Sheridan et al. (1957),the pegmatite has... rolls complicate the apparently side of the pegmatite,whereasthe crestis relativelysimple, mene,uraninite...describedin the presentpaper, and in the Herbb no. 2 pegmatite,Virginia in 1981 (Wise and eernf, 1984). r0-1044$02 |  | | Journal (article/letter/editorial) | | processes that facilitate the generation of Li-Cs-Ta pegmatite melts are not fully understood. Knowledge of the...tectonic setting of this class of rare element pegmatite is limited in particular by the availability of...providing insights into the source of Li-Cs-Ta pegmatite melts. The crystallisation ages and Lu-Hf isotopic...kendall-langley@research.uwa.edu.au 11 12 Keywords pegmatite, rare metals, geochronology, petrogenesis, cassiterite...processes that facilitate the generation of Li-Cs-Ta pegmatite melts are not fully understood. 17 Knowledge |  | | Journal (article/letter/editorial) | | 2010, Vol. 74(4), pp. 715–729 Hidden story of tapiolite T. S. ERCIT Canadian Museum of Nature, P.O. Box...September 2010] ABSTR ACT The crystal chemistry of tapiolite is more complicated than previously recognized...recent publications reveals a ‘hidden’ story about tapiolite, one that: (1) permits quantification of the effects...the unit-cell parameters of maximally ordered tapiolite; (2) shows that the effect of Nb = Ta substitution...evaluating cation order in tapiolite; (4) suggests that rutile exsolves from tapiolite upon heating in air at |  | | Journal (article/letter/editorial) | | transformations of triphylite from the Nanping No. 31 pegmatite dyke, southeastern China CAN RAO1,*, RU CHENG...phosphates was investigated in the Nanping No. 31 pegmatite, southeastern China. Two types of triphylite were...lazulite, anapaite, ludlamite, Nanping No. 31 pegmatite, China. 1. Introduction Triphylite, Li(Fe,Mn)2þPO4...significance. The Nanping No. 31 pegmatite is a rare-element, well mineralized pegmatite from southeast China (Yang...(Yang et al., 1987; Rao et al., 2009). In this pegmatite, triphylite occurs in zones III (Na-metasomatic |  | | Journal (article/letter/editorial) | | from the Scheibengraben beryl-columbite granitic pegmatite, Maršíkov, Czech Republic MILAN NOVÁK1,*, PETR...beryl-columbite pegmatite at Scheibengraben, Maršíkov, Northern Moravia, Czech Republic. The pegmatite consists...(facilitated by low contents of B, P and Li in the pegmatite melt) very likely maximized such an extensive...differential solubilities of columbite and tantalite in pegmatite melt. The apparent reversal of Nb-Ta and Fe-Mn...and Fe-Mn fractionation paths, beryl-columbite pegmatite, fluorine, Maršíkov, Czech Republic. Introduction |  | Roza Llera, Ana, Fuertes-Fuente, Mercedes, Cepedal, Antonia, Martin-Izard, Agustín (2019) Barren and Li–Sn–Ta Mineralized Pegmatites from NW Spain (Central Galicia): A Comparative Study of Their Mineralogy, Geochemistry, and Wallrock Metasomatism. Minerals, 9 (12) 739 doi:10.3390/min9120739 | Journal (article/letter/editorial) | | (barren) and Li–Sn–Ta mineralized Presqueira pegmatite are established in this study. K-feldspar and...trend from columbite-(Fe) to tantalite-(Fe) and tapiolite-(Fe). In this body, the Li-aluminosilicate textures...Li–Sn–Ta mineralized pegmatite. In both barren and mineralized bodies, the pegmatite-derived fluids that...and As. Keywords: wallrock signature; Li–Sn–Ta pegmatite; columbite–tantalite; tantaliferous cassiterite;...on a Li–Sn–Ta mineralized body, the Presqueira pegmatite, which is a non-outcropping body that has been |  | Černý, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite...ABSTRACT The complex, petalite-subtype Varuträsk pegmatite in the Proterozoic rocks of northern Sweden is...is, as a whole, rather poor in Nb and Ta. The pegmatite consolidated in eight units, but the (Nb,Ta)-oxide...abundance of native antimony and stibarsen in the pegmatite, and the absence of Bi-bearing minerals. Rare...cassiterite in the petalite-subtype Varuträsk pegmatite emphasizes the importance of specific conditions |  | | Journal (article/letter/editorial) | | approximately 75oloof compositional space,and tapiolite, which is stableas a singlephaseover 5oloofcompositional...two-phase region separatesthe generally(Fe,Ta)rich tapiolite from members ofthe columbite-group (eern9 et al...ERCIT ET AL.: SYSTEMATICS OF THE COLUMBITE GROUP TAPIOLITE STRUCTURE 5 . 15 COLUMBITE STRUCTURE MnTarO...thecolumbitestructure:solidlinesfor coexisting taliteand tapiolite,dashedlinesfor singlephases(afterCerni'et al....ments on samplesthat plot farthest from the ordered field disordered samples are not precisely known. To date |
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