 | | Journal (article/letter/editorial) | | from the A-type El Portezuelo Granite and related pegmatites, Catamarca (NW Argentina) Fernando COLOMBO1...DORAIS3 1 2 3 * CONICET-Museo de Mineralogía “Dr Stelzner” – Facultad de Ciencias Exactas, Físicas y Naturales...Universidad Nacional de Córdoba, Vélez Sarsfield 299 (5000) Córdoba, Argentina; fosfatos@yahoo.com.ar...ar Current address: Cátedra de Geología General, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad...Universidad Nacional de Córdoba, Vélez Sarsfield 1611 (X5016GCA) Córdoba, Argentina Department of Geological |  | Breiter, Karel, Vaňková, Michaela, Galiová, Michaela Vašinová, Korbelová, Zuzana, Kanický, Viktor (2017) Lithium and trace-element concentrations in trioctahedral micas from granites of different geochemical types measured via laser ablation ICP-MS. Mineralogical Magazine, 81 (1) 15-33 doi:10.1180/minmag.2016.080.137 | Journal (article/letter/editorial) | | D S : trioctahedral micas, Li-mica, rare-metal granite, Bohemian Massif, laser ablation inductively coupled...crystallized at Podlesí as albite-zinnwaldite-topaz granite in the form of layered rock with comb-quartz layers...study the vertical differentiation of a rare-metal granite intrusion. Nineteen samples were collected from...greisenized granite and greisen (#4685, 4930, 4931 and 4975), albite-zinnwaldite granite (#4677, 4683...4690, 4691, 4936, 4937 and 4938) and Li-annite granite (#4692, 4693, 4940, 4941 and 4942). Rozvadov Pluton |  | | Journal (article/letter/editorial) | | intruded a biotite > muscovite granite which is related to another two-mica granite. Variation diagrams of major...muscovite granite and aplite-pegmatite veins and sills are derived from the earlier two-mica granite magma... probably also lithium micas (zinnwaldite, polylithionite and rare lepidolite), cassiterite, columbite-tantalite...and Li, Sn, F and Ta concentrations. Key words: granite, aplite, pegmatite, feldspars, micas, columbite-tantalite...Introduction Most pegmatites are derived from granite melts (e.g., JAHNS & BURNHAM 1969, LONDON 2008 |
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