 | | Journal (article/letter/editorial) | | compositional evolution of pegmatite-forming melts through magmatic crystallization and pegmatite melt â host-rock... At the former locality, tourmaline from the pegmatite units is essentially magmatic, whereas at the...involved the introduction of B, Li and Al from pegmatite-generated fluids to form metasomatic haloes. The...from tourmaline with a signature influenced by pegmatite â host-rock interaction. The behavior of Ca in...useful in recognizing late-stage Ca-enrichment in pegmatite-forming melts as a result of CaâF complexing, |  | | Journal (article/letter/editorial) | | (green coloured) zones. In the core (zone I) âfluor-elbaiteâ could be identified for the first time for... (up to 40 mol%), while the liddicoatite- and elbaite-components are decreasing. The intermediate zone...schörl-component of all zones (up to ~11 mol%), while the elbaite-component is decreasing. In the rim (zone IV) the...decreases to ~6 mol%, while simultaneously the elbaite-component increases. Our investigation shows that...Fe-rich tourmalines (schörl, foitite) in this pegmatite was in a final stage and therefore in this pegmatitic |  | 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...respectively. (ii) Tourmaline (schorl, fluor-schorl, fluor-elbaite) from more evolved pegmatites (evolved...(evolved euxenite-type and mixed (NYF + LCT) pegmatite) show a depletion in REE and Sc with progressive crystallization...concentrations of Y + REE and REE patterns in relation to pegmatite family (LCT or NYF), degree of fractionation, |  | | Journal (article/letter/editorial) | | tourmaline fibers intergrown with a deep pink elbaite host from the Cruzeiro mine, Minas Gerais, Brazil...magmatic and hydrothermal fluids involved in pegmatite formation. Optical and back-scattered electron...Fe-rich elbaite to Li-rich schorl, and the third generation is a yellowish-green âfluor-elbaiteâ. Volumetrically...Ca, and F during late crystallization of the pegmatite. The composition was reset to a Li-rich schorl...fibrous tourmaline, tourmaline dissolution, foitite, elbaite, fluids, Cruzeiro mine, Minas Gerais, Brazil. |  | 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...crystallizing as schorl. The FeâMg-free and LiâAl-rich elbaite is typical of the transition between the intermediate...replacement pockets. The bright turquoise blue elbaite known as âParaĂba tourmalineâ is produced in the...high Cu contents, up to 1.07 wt.% CuO. In other occurrences of the âParaĂba tourmalineâ in the BPP, up to |  | | Journal (article/letter/editorial) | | âŒ35 km subsequently followed by the ITD to the upper/middle crustal level (âŒ15 km depth). The PâT evolution...yielded a medium-pressureâmedium-temperature (MPâMT) metamorphic peak of 0.85â1.10 GPa at 720â780 °C...pre-industrial, and to some extent post-industrial metal or fluor suppliers. The Pfunderer Berg mine is a Permian...ROSSI, MONTE SPAGNOLO, AND THE 2002/03 LAVA FLOW, MT. ETNA: EVIDENCE FOR MAGMA MIXING Bauer, M.1, Ntaflos...University of Ferrara, Via Savonarola, 9, 44121 Ferrara, Italy 3 Department of Biol., Env. and Geol. Sciences, |  | | 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...a vast range of geologic environments from the upper mantle through to the near surface environment....with NC pyrrhotite. For single phase pyrrhotite occurrences in this study, 4C pyrrhotite was more Ni-rich |  | | 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 |  | | 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 |
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