 | | 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) | | 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) | | pegmatite genesis. Wise and Brown address the granite–pegmatite link at the famous Sebago system, southern...pegmatites in this region, although another fertile granite–pegmatite system may be responsible for some anomalous...A-type El Portezuelo granite and related miarolitic pegmatites at Catamarca, northwestern Argentina. The...The micas (biotite, muscovite, zinnwaldite) exhibit compositional evolution characteristic of NYF-type...NYF-type granite– miarolitic pegmatite systems. Beal and Lentz present detailed mineralogical and isotopic study |  | | Journal (article/letter/editorial) | | 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...amazonite, phenakite Pikes Peak Granite NYF Miarolitic topaz, amazonite, phenakite References Muntyan |  | | Journal (article/letter/editorial) | | igneous rocks, including the wellstudied Blond granite in the Massif Central, France (Soufi, 2015; Soufi... USA, as a primary phenocryst phase including biotite (Congdon and Nash, 1991); (D) Phenocrysts of quartz...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 |  | 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) | | 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...(microcline and perthite), sodic plagioclases and biotite are the main constituents, commonly associated...coarse-grained quartzite at contact with the granite. The granite is metaluminous to slightly peraluminous |  | 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...Rb, Cs and high-field-strength elements between biotite and leucocratic melt were studied by Bea et al...mostly metaluminous amphibole-biotite tonalites and quartz diorites to biotite trondhjemites and granodiorites...rocks; (2) the high-K calc-alkaline Blatná suite – biotite ± amphibole granodiorites and granites and associated...porphyritic amphibole-biotite melasyenites and melagranites (durbachites), biotite-two-pyroxene melasyenites |  | | 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 |  | | Journal (article/letter/editorial) | | area intruded a biotite > muscovite granite which is related to another two-mica granite. Variation diagrams...of major elements indicate that the biotite > muscovite granite and aplite-pegmatite veins and sills...two-mica granite magma by fractional crystallization of quartz, plagioclase, K-feldspar, biotite and ilmenite...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 |  | 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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