 | | 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 |  | 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 Raúl LIRA§ CONICET–CICTERRA, Museo de Mineralogía y Geología...Universidad Nacional de Córdoba, Av. V. Sarsfield 299, (5000) Córdoba, Argentina Miguel Ángel GALLISKI...Ruiz Leal s/n, (5500) Mendoza, Argentina Federico BERNARD YPF, 9 de Septiembre esquina Roca s/n, Las...Santa Cruz, Argentina María Belén ROQUET Departmento de Geología, Universidad Nacional de San Luis, Chacabuco...Chacabuco y Pedernera, (5700) San Luis, Argentina Abstract The Potrerillos granitic pegmatites, in the |  | | Journal (article/letter/editorial) | | Even the common minerals of microcline, bladed albite, and smoky quartz are enhanced by a purple or green... Fluorite, 10 × 7.2 × 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...USA Crystal Park–Bear Creek, El Paso County, CO, USA Pikes Peak Granite NYF Miarolitic topaz, amazonite |  | | Journal (article/letter/editorial) | | igneous rocks, including the wellstudied Blond granite in the Massif Central, France (Soufi, 2015; Soufi...Eurajoki granite stock, Finland (Haapala, 1997); (E) Groundmass of rhyolite dikes from Eurajoki granite stock...high-relief topaz; (H) Topaz-zinnwaldite alkali-fedspar granite of Eibenstock, Germany re (Ditterová, 2014),...(I) Subhedral topaz grain in the equigranular granite from the Kymi stock, within the Wiborg rapakivi...Medium-grained Li-F granite, Krásno stock, Czech Republic (Jarchovský, 2006). K-feldspar and albite are enclosed |  | 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) | | Central Andes (Chivinar volcanic complex, NW Argentina): Constraints from texture, mineralogy and rock...Facultad de Ciencias Naturales, Universidad Nacional de Salta, CEGA–CONICET Salta, Argentina d Dipartimento...correspondence of the transtensive Calama–Olacapato–El Toro fault system, suggesting preferred extensional...transverse NW-trending lineaments as the Calama–Olacapato–El Toro (COT) fault system. (B) Regional geologic map...between the magmatic arc and backarc. SAC: San Antonio de los Cobres. (C) Geologic map of the Chivinar volcano |  | | 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 δ18O of granite, aplite and pegmatite and compositions of their |  | | Journal (article/letter/editorial) | | Shield is an alkaline granite complex comprising an inner core of biotite granite that outwardly becomes...sodic-calcic amphibole (ferrobarroisite–katophorite) 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 (820–1050...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 “contaminated” with xenocrystic zircon with |  | 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...biotite granites and a younger intrusive suite of albite-annite granites with topaz. The most fractionated...residual magma crystallized at Podlesí 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) | | geochronology of the Permian A-type Hasanrobat granite, Sanandaj–Sirjan belt: A new record of the Gondwana...Keywords: Hasanrobat Sanandaj–Sirjan belt A-type granite Permian Neotethys Gondwana a b s t r a c t The...Neoproterozoic–Phanerozoic ages. The Hasanrobat granite in central SSB occurs as a single pluton, ~ 20...coarse-grained quartzite at contact with the granite. The granite is metaluminous to slightly peraluminous...zircon grains separated from a representative granite sample yielded concordant U–Pb ages with weighted |  | Debowski, Beatriz Pereira, Potratz, Guilherme Loriato, Tavares Júnior, Armando Dias, Alves Martins, Maria Virgínia, Geraldes, Mauro Cesar (2022) Age and Origin of the Massangana Intrusive Suite and Associated Mineralizations, in the Rondônia 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 Rondônia Tin Province: Petrography, U-Pb, and Lu-Hf Isotopes Zircons...Associated Mineralizations, in the Rondônia Tin Province: Petrography, U-Pb, and Lu-Hf Isotopes Zircons...Received: 20 August 2022 Faculdade de Geologia, Departamento de Mineralogia e Petrologia Ígnea (DMPI)...Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524—Bloco A, Rio de Janeiro 20550-013...20550-013, Brazil Instituto de Física, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier |
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