 | | Journal (article/letter/editorial) | | 1515 COMPOSITIONAL AND STRUCTURAL VARIATIONS IN COLUMBITE-GROUP MINERALS FROM GRANITIC PEGMATITES OF THE...the Brunswick pegmatite field and the Central Maine Synclinorium of the Oxford pegmatite field, in Maine...numerous rare-element granitic pegmatites that carry columbite-group minerals (CGM) as the principal (Nb,Ta)-bearing...characteristics (e.g., Topsham area of the Brunswick pegmatite field). Significant chemical-compositional and...Brunswick and Oxford pegmatite fields. Columbite-group minerals from the Brunswick pegmatite field mainly consist |  | | Journal (article/letter/editorial) | | 10.3749/canmin.1600075 THE SVECONORWEGIAN PEGMATITE PROVINCE â THOUSANDS OF PEGMATITES WITHOUT PARENTAL...Sveconorwegian pegmatite province in southern Norway and southwest Sweden hosts seven rareelement pegmatite districts...magmatism during post-orogenic extension. The pegmatite formation principally comprises four periods restricted...sectors). The observed relationships between pegmatite formation and regional high-grade metamorphism...In light of this, the genetic criteria of the pegmatite family classification scheme [NYF versus Lithium-Cesium-Tantalum |  | Lupulescu, Marian, Chiarenzelli, Jeffrey, Pecha, Mark, Singer, Jared, Regan, Sean (2018) Columbite-Group Minerals from New York Pegmatites: Insights from Isotopic and Geochemical Analyses. Geosciences, 8 (5) 169 doi:10.3390/geosciences8050169 | Journal (article/letter/editorial) | | geosciences Article Columbite-Group Minerals from New York Pegmatites: Insights from Isotopic and Geochemical...Published: 9 May 2018 Abstract: Columbite crystals from niobium-yttrium-fluorine (NYF) pegmatites...Plasma-Mass Spectrometry (LA-MC-ICP-MS)). All four pegmatite localities sampled are hosted by the Proterozoic...Fordham gneiss and/or Paleozoic Bedford gneiss (Columbite-(Fe); Kinkel and Baylis localities) and the Manhattan...Manhattan Schist of Lower Paleozoic age (Columbite-(Mn); Fort George and Harlem River Drive localities) |  | | Journal (article/letter/editorial) | | Pilbara pegmatite province in the Archean North Pilbara Craton contains at least 120 pegmatite deposits...deposits in over 27 pegmatite groups and fields, including the giant Mount Cassiterite tantalum orebody in...in the Wodgina pegmatite district. Generally, rare metal pegmatites in the province are hosted by mafic-ultramafic...that have given rise to different petrogenetic pegmatite suites can be identified in processed radiometric...character that permitted formation of significant pegmatite mineralization. They represent the culmination |  | | Journal (article/letter/editorial) | | compositional trends of columbiteâtantalite in the berylâcolumbite Ć ejby granitic pegmatite, Czech Republic:...Corresponding author The simply zoned Ć ejby pegmatite of berylâcolumbite subtype is enclosed in migmatitized...Complex, Bohemian Massif, Czech Republic. The columbite-group minerals (CGM) occur mostly in blocky K-feldspar...K-feldspar unit. Primary magmatic CGM [columbite-(Fe)âtantalite-(Fe)], show an interesting compositional...and textural evolution. Subhomogeneous cores of columbite-(Fe)âtantalite-(Fe) (A) are surrounded by heterogeneous |  | | Journal (article/letter/editorial) | | PEGMATITE Erste Ăsterreichische Arbeitstagung MontanuniversitĂ€t Leoben 11. April 2014 Zusammenfassung...Melcher MITT.ĂSTERR.MINER.GES. 160 (2014) PEGMATITE - ERSTE ĂSTERREICHISCHE ARBEITSTAGUNG von Johann...MontanuniversitĂ€t Leoben die 1. Arbeitstagung zum Thema Pegmatite statt. Die Veranstaltung wurde vom Department...Geologie und LagerstĂ€ttenlehre) organisiert. Pegmatite sind sowohl aus wirtschaftlichen als auch wissenschaftlichen...hochgradiger Metamorphose gegenĂŒber. Gerade die Pegmatite in den Ostalpen stellen ein Musterbeispiel fĂŒr |  | KĂŒster, Dirk, Romer, Rolf L., Tolessa, Dandena, Zerihun, Desta, Bheemalingeswara, K., Melcher, Frank, OberthĂŒr, Thomas (2009) The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, UâPb age and Ta mineralization. Mineralium Deposita, 44 (7) 723-750 doi:10.1007/s00126-009-0240-8 | Journal (article/letter/editorial) | | 1007/s00126-009-0240-8 ARTICLE The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, UâPb age...Springer-Verlag 2009 Abstract The Kenticha rare-element pegmatite, a globally important tantalite source in the...corresponds to the spodumene subtype of the rareelement pegmatite class and belongs to the lithiumâcesiumâ tantalum...tantalum petrogenetic family. The Kenticha pegmatite is asymmetrically zoned from bottom to top into granitic...spodumene-bearing upper zone. A monomineralic quartz unit is discontinuously developed within the upper zone. Whole-rock |  | Soares, D. R., Beurlen, H., Barreto, S. d. B., Da Silva, M. R. R., Ferreira, A. C. M. (2008) COMPOSITIONAL VARIATION OF TOURMALINE-GROUP MINERALS IN THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL. The Canadian Mineralogist, 46 (5) 1097-1116 doi:10.3749/canmin.46.5.1097 | Journal (article/letter/editorial) | | TOURMALINE-GROUP MINERALS IN THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL Dwight Rodrigues SOARES§...rare-element-class granitic pegmatites from the Borborema Pegmatite Province (BPP), northeastern Brazil. Tourmaline from...high Cu contents, up to 1.07 wt.% CuO. In other occurrences of the âParaĂba tourmalineâ in the BPP, up to...geochemical evolution trend of tourmalines among the pegmatite bodies investigated (vacancy at the X site, Fe...indicator of the degree of evolution of the hosting pegmatite. According to these data,âParaĂba tourmalineâ-producing |  | ÄopjakovĂĄ, R., Ć koda, R., VaĆĄinovĂĄ GaliovĂĄ, M., NovĂĄk, M. (2013) Distributions of Y + REE and Sc in tourmaline and their implications for the melt evolution; examples from NYF pegmatites of the TĆebĂÄ Pluton, Moldanubian Zone, Czech Republic. Journal of GEOsciences, 58 (2) 113-131 | Journal (article/letter/editorial) | | contents of Sc compared to the analyzed host pegmatite units (less than 1 ppm Sc). The contents of Sc...P2O5) and Ca contents (< 0.8 wt. % CaO) in host pegmatite unit preventing precipitation of Y + REE phosphates...(evolved euxenite-type and mixed (NYF + LCT) pegmatite) show a depletion in REE and Sc with progressive...concentrations of Y + REE and REE patterns in relation to pegmatite family (LCT or NYF), degree of fractionation,...PozÄĂĄtky â Kracovice NYF pegmatites NYF + LCT mixed pegmatite Fig. 1 Schematic map of the TĆebĂÄ Pluton. Open |  | Novak, M., Skoda, R., Gadas, P., Krmicek, L., Cerny, P. (2012) Contrasting Origins of the Mixed (NYF + LCT) Signature in Granitic Pegmatites, with Examples from the Moldanubian Zone, Czech Republic. The Canadian Mineralogist, 50 (4) 1077-1094 doi:10.3749/canmin.50.4.1077 | Journal (article/letter/editorial) | | Li-bearing (lithium micas + elbaite) Kracovice pegmatite, with âamazoniteâ, samarskite and fergusonite...is the product of the strong fractionation of pegmatite-forming melt derived from the orogenic I-type...graniteâ pegmatite system of the TĆebĂÄ pluton and the mainly Li-bearing Kracovice pegmatite are typical...petrogenetic family. The contaminated elbaite-subtype pegmatite BliĆŸnĂĄ I, ÄeskĂœ Krumlov Unit, with lithium tourmalines...contamination with Ca, Mg and REE of an evolved (LCT) pegmatite-forming melt by distal carbonatite-like marbles |  | | Journal (issue) | | the U.S., Germany, Austria, Switzerland, France, Italy, Great Britain, Hungary, Yugoslavia, Romania, Ceylon...with tourmaline, have sustained the Golconda pegmatite fieldâs reputation as among the most important...districts in all of Brazil. INTRODUCTION The Golconda Pegmatite Field is a familiar name to mineral collectors...for mica produced in Minas Gerais. A rich, new pegmatite deposit in the Brazilian Golconda area, best known...including the region now known as the Eastern Pegmatite Province. Just below the center can be seen the Rio |  | | Book | | Sciences Harald G. Dill The HagendorfPleystein Province: the Center of Pegmatites in an Ensialic Orogen...com/series/7377 Harald G. Dill The Hagendorf-Pleystein Province: the Center of Pegmatites in an Ensialic Orogen...quartz at the core of the pegmatite is concerned. In comparison with other pegmatite deposits in the area...area, however, the Hagendorf-Pleystein Pegmatite Province (HPPP) is not only the largest concentration of...everything has been told about this prominent pegmatite. Professor Strunz was a generous and open-minded |  | | Thesis/Dissertation | | Idefjorden âTerraneâ, respectively. The Lindvikskollen pegmatite area was the focus of field work and sampling...in the area. In the case of the Lindvikskollen pegmatite, which intruded a metagabbro body and its albitized...tourmaline and bulk rock chemistry indicates that the pegmatite was probably formed by mixed partial melting of...albitite host rocks. In addition, the nearby Tangen pegmatite intrudes the same metagabbro, and its overlapping...host rock tourmaline-bearing gneiss to be the pegmatite melt source. This thesis concludes that the source |  | | Book | | Roland Bouhelier in 1973 from the "Bouhelier pegmatite", and shortly thereafter acquired by the Canadian...scale, countless scientifically interesting occurrences. No other locality in the cou;ntry, however,...concerning the origin of the Monteregian Hills alkaline province, and a brief description of each member. The geology...late Henry Budgen (Canada), Gianfranco Ciccolini (Italy), the late Rock Currier (USA), Robert Gault [digital...under the current administrative divisions, the Province of Quebec has been divided into regions and Regional |  | | Journal (volume) | | bodies and fracture fillings. From the Haapaluoma pegmatite the following minerals, inter aha, are described:...zircon, xenotime, cheralite, brockite, spodumene, columbite and microlite; the four last mentioned with chemical...potash feldspar, beryl and columbite are presented. From the Hunnakko pegmatite mineralogical description...Quartz diorite and granodiorite, granite and pegmatite . ...... .. . . . 13 13 Tectonics and stratigraphy... . . . . . . . . . . . . . . . . . . . . . . Columbite . . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (volume) | | (Romania) (Slovakia) (China) (Germany) (Poland) (Italy) (Czech Republic) (Romania/USA) (Germany) (Hungary)...extra-terrestrial nanodiamonds: Recent progress in the occurrences, structures and uses...797 13. THERMODYNAMICS...lateral eruption started March 20 at the FimmvörĂ°uhĂĄls pass. Relatively primitive olivine and plagioclase bearing...this was nicely shown for the case of oxidation of Mn(II) by bacteria [5]. Due to the rather low absorption...a vast range of geologic environments from the upper mantle through to the near surface environment. |  | | Book | | Helvetica Printedand bound by L.E.G.OSpA, Vicenza, Italy CONTENTS Preface ...............................MB/ are a series of maps to give the mineral occurrences both a spatial and geological context, and some..."British" species. A further 11 British first occurrences have since been recorded from specimens held...species to his increasing list of British first occurrences. What went unnoticed at the time was that the... so that the context of many of the mineral occurrences can be better understood. The accompanying figures |
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