| PrĆĄek, Jaroslav, Majka, Jaroslaw, Uher, Pavel, ChudĂk, Peter (2010) Niobium-tantalum minerals in the Skoddefjellet NYF granitic pegmatite, Svalbard Archipelago, Norway: Primary versus secondary assemblage. Neues Jahrbuch fĂŒr Mineralogie - Abhandlungen, 187 (3) 235-248 doi:10.1127/0077-7757/2010/0172 | Journal (article/letter/editorial) | Niobium-tantalum minerals in the Skoddefjellet NYF granitic pegmatite, Svalbard Archipelago, Norway: Primary versus secondary...of Nb-Ta mineralization in a granitic pegmatite from the Svalbard Archipelago, Arctic Caledonides and the...phases are discussed. The Skoddefjellet NYF pegmatite located in southwest Spitsbergen (Wedel Jarlsberg Land)...The secondary assemblage comprises Nb,Ta-bearing rutile (†23 wt. % Nb2O5, †1.7 wt. % Ta2O5), ilmenite...environment and increasing fluorine activity during the pegmatite evolution. The formation of secondary phases is | | Majka, J., PrĆĄek, J., BudzyĆ, B., BaÄĂk, P., Barker, A. K., ĆodziĆski, M. (2011) Fluorapatite-hingganite-(Y) coronas as products of fluid-induced xenotime-(Y) breakdown in the Skoddefjellet pegmatite, Svalbard. Mineralogical Magazine, 75 (1) 159-167 doi:10.1180/minmag.2011.075.1.159 | Journal (article/letter/editorial) | fluid-induced xenotime-(Y) breakdown in the Skoddefjellet pegmatite, Svalbard J. MAJKA1,*, J. PRSÌEK2, B. BUDZYNÌ3...The pre-Caledonian NYF Skoddefjellet pegmatite in Wedel Jarlsberg Land, Svalbard, contains xenotime-(Y)...Ca- and F-bearing fluids interacting with the pegmatite. The occurrence of hinnganite-(Y) as a breakdown...There are few Ca-bearing primary phases in the pegmatite, indicating that the source of fluid was probably...of the pegmatite (i.e. beryl dissolution). K EY WORDS : xenotime, hingganite, apatite, pegmatite, Svalbard | | | Journal (article/letter/editorial) | diverse Sc- and Snbearing Nb-Ti-minerals (niobian rutile, nioboaeschynite, samarskite), barite, sphalerite... nioboaeschynite; bastnaesite-(Nd); Nb-bearing oxides (Nb-rutile, Nb-ilmenite); and commonly colourless fluorite...bastnaesite), with minor microcline, aeschynite, rutile, quartz, and calcite. Monazite appears to be...diverse Sc- and Sn-bearing Nb-Ti-minerals (niobian rutile, nioboaeschynite, samarskite), barite, sphalerite...after monazite, xenotime, bafertisite, niobian rutile, and phlogopite but contemporaneously with late-stage | | Ć vecovĂĄ, E., ÄopjakovĂĄ, R., Losos, Z., Ć koda, R., Nasdala, L., CĂcha, J. (2016) Multi-stage evolution of xenotimeâ(Y) from PĂsek pegmatites, Czech Republic: an electron probe micro-analysis and Raman spectroscopy study. Mineralogy and Petrology, 110 (6) 747-765 doi:10.1007/s00710-016-0442-6 | Journal (article/letter/editorial) | alkali-rich fluids during the hydrothermal stage of the pegmatite evolution. The magmatic xenotime underwent intense...xenotime-(Y) from three granitic pegmatites of the PĂsek pegmatite field, Czech Republic. The chemical variability...Geological setting Moldanubian Zone The PĂsek pegmatite field is located 5â10 km E from the city of PĂsek...overprint (331â326 Ma). Pegmatites of the PĂsek pegmatite field Beryl-bearing pegmatites with abundant tourmaline...tourmaline are characteristic for the PĂsek pegmatite field. They intruded the migmatized gneisses of | | | Report (issue) | local garnet and muscovite, abundant aplite and pegmatite dikes JHgg.e equigranular granite foliated...magmatic layering, zoned K-feldspar, and Kfeldspar pegmatite common sodic(?) amphibole and pyroxene, apatite...178.8 to 178.4 Ma); and 3) massive syenite and pegmatite (ca. 177 to 175 Ma). The older biotite pyroxenite...fersmite differ from those found in carbonatite- and pegmatite-related deposits. The zonation, non-metamict appearance...fersmite to those of fersmite from carbonatite- and pegmatite-related deposits, furthering the value of fersmite |
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