 | | 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 MineralogĂa âDr Stelznerâ â Facultad de Ciencias Exactas, FĂsicas y Naturales...Universidad Nacional de CĂłrdoba, VĂ©lez Sarsfield 299 (5000) CĂłrdoba, Argentina; fosfatos@yahoo.com.ar...ar Current address: CĂĄtedra de GeologĂa General, Facultad de Ciencias Exactas, FĂsicas y Naturales, Universidad...Universidad Nacional de CĂłrdoba, VĂ©lez Sarsfield 1611 (X5016GCA) CĂłrdoba, Argentina Department of Geological |  | | Journal (article/letter/editorial) | | family and granite tectonic type were re-examined using a large data set of published granite compositions...regard to the orogenic settings of the source granite origin. Pearce trace-element discrimination diagrams...diagrams for these granites suggest that LCT granite-pegmatite systems originate in orogenic and perhaps...in the granite from each tectonic setting are reflected in the pegmatite mineralogy. Granite that is...well as tourmaline group minerals. In contrast, granite that is parental to NYF pegmatites is typically |  | | Journal (article/letter/editorial) | | icing on the more spectacular crystals of beryl, topaz, and tourmaline. Even the common minerals of microcline... Fluorite, 10 Ă 7.2 Ă 5.7 cm, from the Conway Granite, near Red Stone quarry, Conway, Carroll County...minerals. He currently works in Chengdu, Sichuan Province, China, as a development geophysicist for Chevron...at 08:14 13 August 2013 2 Locality Parental Granite Pegmatite Class Mineral associates of significance...ParkâBear Creek, El Paso County, CO, USA Pikes Peak Granite NYF Miarolitic topaz, amazonite, phenakite |  | Lira, R., Galliski, M. A., Bernard, F., Roquet, M. B. (2012) The Intragranitic Potrerillos NYF Pegmatites and Their a-Type Host Granites of the las Chacras - Potrerillos Batholith, Sierra de San Luis, Argentina. The Canadian Mineralogist, 50 (6) 1729-1750 doi:10.3749/canmin.50.6.1729 | Journal (article/letter/editorial) | | POTRERILLOS BATHOLITH, SIERRA DE SAN LUIS, ARGENTINA RaĂșl LIRA§ CONICETâCICTERRA, Museo de MineralogĂa y GeologĂa...Universidad Nacional de CĂłrdoba, Av. V. Sarsfield 299, (5000) CĂłrdoba, Argentina Miguel Ăngel GALLISKI...Ruiz Leal s/n, (5500) Mendoza, Argentina Federico BERNARD YPF, 9 de Septiembre esquina Roca s/n, Las...Santa Cruz, Argentina MarĂa BelĂ©n ROQUET Departmento de GeologĂa, Universidad Nacional de San Luis, Chacabuco...Chacabuco y Pedernera, (5700) San Luis, Argentina Abstract The Potrerillos granitic pegmatites, in the |  | | Journal (article/letter/editorial) | | Pre-proof Origin and physical-chemical control of topaz crystallization in felsic igneous rocks: Contrasted...Soufi, Origin and physical-chemical control of topaz crystallization in felsic igneous rocks: Contrasted...Pre-proof Origin and physical-chemical control of topaz crystallization in felsic igneous rocks: contrasted...In highly evolved F-rich felsic igneous rocks, topaz Al2SiO4(F,OH)2 forms in different genetic re stages:...deciphering the origin of OHâF variations in topaz. We conclude that topaz compositions in magmatic and post-magmatic |  | Gioncada, Anna, Orlandi, Paolo, Vezzoli, Luigina, Omarini, Ricardo H., Mazzuoli, Roberto, Lopez-Azarevich, Vanina, Sureda, Ricardo, Azarevich, Miguel, Acocella, Valerio, Ruch, Joel (2014) Topaz magmatic crystallization in rhyolites of the Central Andes (Chivinar volcanic complex, NW Argentina): Constraints from texture, mineralogy and rock chemistry. Lithos, 184. 62-73 doi:10.1016/j.lithos.2013.10.023 | Journal (article/letter/editorial) | | journal homepage: www.elsevier.com/locate/lithos Topaz magmatic crystallization in rhyolites of the Central...Central Andes (Chivinar volcanic complex, NW Argentina): Constraints from texture, mineralogy and rock...Facultad de Ciencias Naturales, Universidad Nacional de Salta, CEGAâCONICET Salta, Argentina d Dipartimento...2013 Available online 30 October 2013 Keywords: Topaz-bearing rhyolite Fluorine Magmatic volatiles Miarolitic...Miarolitic texture Central Andes a b s t r a c t Topaz-bearing rhyolite lavas were erupted as domes and |  | Breiter, Karel, VaĆkovĂĄ, Michaela, GaliovĂĄ, Michaela VaĆĄinovĂĄ, KorbelovĂĄ, Zuzana, KanickĂœ, 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...intrusive suite of albite-annite granites with topaz. The most fractionated, extremely F- and P-rich...crystallized at PodlesĂ as albite-zinnwaldite-topaz granite in the form of layered rock with comb-quartz...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 |  | | 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...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...trace and rare earth elements (REE) and ÎŽ18O of granite, aplite and pegmatite and compositions of their |  | Debowski, Beatriz Pereira, Potratz, Guilherme Loriato, Tavares JĂșnior, Armando Dias, Alves Martins, Maria VirgĂnia, Geraldes, Mauro Cesar (2022) Age and Origin of the Massangana Intrusive Suite and Associated Mineralizations, in the RondĂŽnia Tin Province: Petrography, U-Pb, and Lu-Hf Isotopes Zircons. Minerals, 12 (10) 1304 doi:10.3390/min12101304 | Journal (article/letter/editorial) | | Associated Mineralizations, in the RondĂŽnia Tin Province: Petrography, U-Pb, and Lu-Hf Isotopes Zircons...Associated Mineralizations, in the RondĂŽnia Tin Province: Petrography, U-Pb, and Lu-Hf Isotopes Zircons...Received: 20 August 2022 Faculdade de Geologia, Departamento de Mineralogia e Petrologia Ăgnea (DMPI)...Universidade do Estado do Rio de Janeiro (UERJ), Rua SĂŁo Francisco Xavier, 524âBloco A, Rio de Janeiro 20550-013...20550-013, Brazil Instituto de FĂsica, Universidade do Estado do Rio de Janeiro (UERJ), Rua SĂŁo Francisco Xavier |  | | Journal (article/letter/editorial) | | Shield is an alkaline granite complex comprising an inner core of biotite granite that outwardly becomes...sodic-calcic amphibole (ferrobarroisiteâkatophorite) granite. A combined study of mineral chemistry and single...estimates suggested that the Jabal Al-Hassir A-type granite magma was generated at high temperature (820â1050...assemblages, to collisional calc-alkaline TTG and granite assemblages, to post-collisional within-plate A-type...Sinai (Egypt), where a 594 ± 8 Ma post-tectonic granite is âcontaminatedâ with xenocrystic zircon with |
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