 | | Journal (article/letter/editorial) | | Lisboa, 1749‑016 Lisbon, Portugal 2 ICT Research Centre/Universidade do Minho, Campus de Gualtar, 4710‑057...4710‑057 Braga, Portugal 3 Departamento de Geología, Universidad de Salamanca, 37008 Salamanca, Spain...Several granite-hosted tourmaline sets from the Castelo Branco, Idanha-a-Nova (Antunes 2006), and Penamacor-Monsanto...their host granites from Alijó-Sanfins and Rebordelo (Trás-os-Montes, Portugal), and from the Alamo Complex...in this paper. Bulk-rock geochemistry for the Castelo Branco and Idanhaa-Nova granites was obtained at |  | | Journal (article/letter/editorial) | | granitic aplites and pegmatites from Alij6-Sanfins, northern Portugal A. M. R. NEIVA Department of Earth Sciences...University of Coimbra, 3000 Coimbra, Portugal Abstract At Alij6-Sanfins there are many granitic aplite and...rocks. Thirty-four samples of K-feldspar and 34 of albite from these veins and host granites were analysed...whereas Na increases and Sr and Ca decrease in albite, from granites to aplites and pegmatites. In a...K-feldspar, and Rb increases and Sr decreases in albite from aplite to coexisting pegmatite. Equilibrium |  | | Journal (article/letter/editorial) | | Geology, University of Coimbra, 3000 Coimbra (Portugal) (Received March 22, 1983; revised and accepted...(S-type), with primary albite and muscovite, and greisenized granites with metasomatic albite and muscovite....Mo-bearing p o t e n t i a l o f granites. L a w r e n c e ( 1 9 7 4 ) also c o n s i d e r e d t h e R b / S...S r ratio as a useful diagnostic o f ore p o t e n t i a l o f acid igneous rocks. Beus and Grigorian...granites. Oliveira and Pereira ( 1 9 8 0 ) c o n s i d e r e d K / R b , B a / R b , Mg/Li and R b / S r ratios |  | | Journal (article/letter/editorial) | | aplites and their minerals from central northern Portugal A. HALL Department of Geology, Royal Holloway...Coimbra, Portugal Abstract The ammonium content of pegmatites, aplites and granites from Alij6-Sanfins, northern...northern Portugal, averages 162, 109 and 159 ppm respectively. There is no systematic difference in the...WO RO S: ammonium, pegmatite, aplite, granite, Portugal. Introduction THE ammonium ion is present as...were studied are from the Alij6-Sanfins area in central northern Portugal, where pegmatites and aplites |  | | Journal (article/letter/editorial) | | Series A. M. R. Neiva1,*. M. M. V. G. Silva1, M. E. P. Gomes2 and T. F. C. Campos3 1 Department of Earth...Coimbra, Portugal Department of Geology, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal 3 Department...Department of Geology, Federal University of Rio Grande do Norte, Natals, Brazil 2 Received: 5. 10. 2000 ·...evolution, as suggested by regression lines, which do not generally pass through the origin. Most trace...Coimbra, 3000-272 Coimbra, Portugal Tel.: ++351-239 823 022; Fax: ++351-239 837 711; e-mail: neiva@ci.uc.pt |  | | Journal (article/letter/editorial) | | wollastonite, 649; lithian tourmaline, 747 Newhurst quarry, Shepshed, Leicestershire, vesigni6ite, 533 Cornwall...glauconite, 753 SCOTLAND France Auchinstarry quarry, Kil~yth, Stirlingshire, julgoldite, 761 Blackcraig... 59 Portsoy, Banffshire, migmatites, 66r Ratho quarry, Edinburgh, julgoldite, 761 Champagnac, Cantal...Loire, basalt, ultrabasic xenoliths, I53 Portugal Alijo-Sanfins, granite, biotite, 453 Switzerland (Helvetia)...tufts, 5oi Dashkesan, heulandite, 5Ol Afghanistan Sar e Sang, sapphirine, kyanite-gedrite-talc schist, 171 |  | | Journal (article/letter/editorial) | | GREISENIZATION OF A MUSCOVITE-BIOTITE ALBITE GRANITE OF NORTHERN PORTUGAL A.M.R. NEIVA Department of Mineralogy...Mineralogy and Geology, University of Coimbra, Coimbra (Portugal) (Accepted for publication April 5, 1974) ABSTRACT...Greisenization of a muscovite-biotite albite granite of northern Portugal. Chem. Geol., 13: 295--308. Greisenization...Greisenization of a muscovite-biotite albite granite of Alij6-Sanfins, northern Portugal, is studied for both major...t h e r n Portugal, t h e r e are various t y p e s o f m u s c o v i t e - b i o t i t e albite granites |  | | Journal (article/letter/editorial) | | M I N E R A L O G I C A L MAGAZINE, MARCH 1 9 7 6 , VOL. 40, PP. 4 5 3 - 6 6 The geochemistry of biotites...granites of northern Portugal with special reference to their tin content A. M. R. N E I V A 1 Department...Mineralogy and Geology, University of Coimbra, Portugal SUMMARY.Biotites from a number of granites have...granites o f Alijd-Sanfins, n o r t h e r n P o r t u g a l , have been a n a l y s e d as p a r t o f...with tin a n d tungsten m i n e r a l i z a t i o n a n d the present p a p e r deals with the a c c u m |  | | Journal (article/letter/editorial) | | rocks and of their biotites from central northern Portugal and their petrogenesis A. M. Ro NEIVA LITHOS...rocks and of t~eir biotites from central northern Portugal and their petrogene~is. Lithos 14, 149-163. Oslo...Franzilhal, S. Lourenfo and Pombal, central northern Portugal, occur rocl~s ranging from hornblende-biotite...10a/Fe~*, Ni.I(P/Mg, Li.I0S/Mg, Cs. 1031K ratios of ~ e rocks and of F of biotite cannot be explained by miners~...and Geotogy, University ~f Oporto, d 000 Oporto, Portugal; 1st October 1980. In the areas of Aregos, Pombal |  | Alfonso, P., Melgarejo, J. C., Yusta, I., Velasco, F. (2003) GEOCHEMISTRY OF FELDSPARS AND MUSCOVITE IN GRANITIC PEGMATITE FROM THE CAP DE CREUS FIELD, CATALONIA, SPAIN. The Canadian Mineralogist, 41 (1) 103-116 doi:10.2113/gscanmin.41.1.103 | Journal (article/letter/editorial) | | Universitat de Barcelona, C/ Martí Franquès s/n, E–08028 Barcelona, Spain IÑAKI YUSTA AND FRANCISCO...Petrología, Universidad del País Vasco, Apdo 644, E–48080 Bilbao, Spain ABSTRACT The Cap de Creus pegmatite...pegmatites (type III) and albite-type pegmatites (type IV). There is an increase in the albite content, relative...microcline-rich pegmatites have low contents of albite, whereas in type IV, albite is the only feldspar. The K/Rb value...contents in Ba, Rb, Cs, Nb, Y, Sn, V and Cr than albite. Albite is richer in Sr, Zr, Cu, As, Ce and Ga. Pb |  | | Journal (article/letter/editorial) | | APLITES AND PEGMATITES FROM CENTR.4J. NORTHERN PORTUGAL A.M.R. NEIVA* Department of Mineralogy and Geology...Geology, L'nivemi~ of Coimbra, Coimbra ¢.Portugal) (Received March 30, 1976; accepted for publication... aplites end pegmatitse from central northern Portugal. Chem. Geol., 20: 223-233. Data on the compositions...granites, aplites and pegmatites of Alij6-Sanfins (northern Portugal) are discussed from the standpoint of...existence o f equilibrium relationships. Major elements do not show walldefined equilibrium abundancies b u |  | | Journal (article/letter/editorial) | | minerals from Paredes da Beira-Penedono, northern Portugal M.M.V.G. Silva and A.M.R. Neiva Department of...Geology, University of Coimbra, 3000 Coimbra (Portugal) (Received November 11, 1989; revised and accepted...minerals from Paredes da Beira-Penedono, northern Portugal. Chem. Geol., 85:147-170. Seven types of Hercynian...granites. However, in the area of Alij6-Sanfins (northern Portugal) there are syntectonic and post-tectonic...field evidence and geochemical data and the numbers do not correspond to those of Sousa ( 1982 ) who did |  | | Journal (article/letter/editorial) | | specialized (in ppm) (Sn: 8-14, W: 5-6, Be: 7-10) but do not carry remarkable enrichment of rare alkaline...%,) Na-rich plagioclase (24), orthoclase (22), albite (6), quartz (40), and Li-rich micas (Li-siderophyllite...fractionated YIC melts are realized in intrusions of albite granites (type Zinnwald) which as a rule occur...(topaz-rhyolitic) dykes are equivalents of such albite granites. Highly evolved granites and ongonites...Peninsula,A;hska €4 Alijd-Sanfins, Portugal S e r r a d a EstreIa,Portugal V Blue Tier, Tasmania -----___ |  | | Journal (article/letter/editorial) | | D OF THEIR MINERALS FROM CENTRAL N O R T H E R N PORTUGAL A.M.R. NEIVA* Department of Mineralogy and...and Geology, University of Coimbra, Coimbra (Portugal) (Received October 31, 1974; revised and accepted...pegmatites and of their minerals from central northern Portugal. Chem. Geol., 16 : 153--177. The major-, minor-...their minerals from the central area of northern Portugal indicates that the composition of the rocks and...schists occur in the central area of northern Portugal. In the literature no references were found for |  | | Journal (article/letter/editorial) | | and Geology, University of Oporto, 4000 Oporto (Portugal) (Received June 1, 1979; revised and accepted...area of northern Portugal there are several different types of muscovite--biotite--albite granites and related...-Alij6--Sanfins in central-northern Portugal several o u t crops of muscovite--biotite--albite granites...mineral assemblage is quartz--white mica--chlorite--albite (An4). In the outer contact metamorphic zone of...assemblage is quartz--white mica--chlorite--biotite--albite (Ans--7). The inner contact metamorphic zone, which |  | Bačík, P., Uher, P., Ertl, A., Jonsson, E., Nysten, P., Kanický, V., Vaculovič, T. (2012) Zoned REE-Enriched Dravite from a Granitic Pegmatite in Forshammar Bergslagen Province, Sweden an EMPA XRD and LA-ICP-MS Study. The Canadian Mineralogist, 50 (4) 825-841 doi:10.3749/canmin.50.4.825 | Journal (article/letter/editorial) | | distinct optical zoning, occurs with quartz, blocky albite and muscovite in the Forshammar granitic pegmatite...granitic pegmatite, Forshammar, Bergslagen, Sweden. § E-mail address: bacikp@fns.uniba.sk 826 the canadian...Fig. 1), in the Forshammar area. The Limbergsbo quarry is still in operation. The granitic pegmatites...59°46’6”N, 15°30’56”E) situated about 1 km northeast of the Klinttjärnbo quarry in the Forshammar area...forsterite (MgKa), willemite (ZnKa), pure Ni (NiKa), albite (NaKa), orthoclase (KKa), BaF2 (FKa) and NaCl (ClKa) |  | | Journal (article/letter/editorial) | | Antarctica, 429 A c t i v e g e o t h e r m a l f i e l d , and t a m a r u g i t e , NaAI(SOa)2-6H20, from...179 ALB1NO, G.V., 383 Albite, in granitic aplites and pegmatites from Portugal, 35 Albitite, the chemical...orientation in synthetic alexandrite, 111 ALIETTI, E., 149 Alkali feldspar, micropores and micropermeable...quantum molecular dynamics of minerals, 597 CONDLIFFE,E., 661 Confocal microscopy, generated images and the...hausmannite from hydrotherm a l l y a l t e r e d m a n g a n e s e ore in the Palaeoproterozoic Kalahari |  | | Journal (article/letter/editorial) | | that are used in characterizing one pegmatite field E-mail address: rune.larsen@ngu.no 137 40#1-fév-02-2328-09... Bjørlykke 1935, 1937, 1939, Åmli 1975, 1977). Albite of the “cleavelandite” habit, microlite and tantalite...coarse-grained subsolidus exsolution-induced domains of albite in pegmatitic K-feldspar effectively prevent direct...gneiss 100 90 Gjerstad suite Augen gneiss 86 E 6480000 88 87 Høvringsvatnet granite-complex ... 103 85 98 83 Agder basement complex 82 81 e 6470000 Bamble basement complex Pegmatite fields |  | Morozova, Lyudmila, Zozulya, Dmitry, Selivanova, Ekaterina, Serov, Pavel, Bazai, Aya (2022) Distribution of Trace Elements in K-Feldspar with Implications for Tracing Ore-Forming Processes in Pegmatites: Examples from the World-Class Kolmozero Lithium Deposit, NW Russia. Minerals, 12 (11) 1448 doi:10.3390/min12111448 | Journal (article/letter/editorial) | | Citation: Morozova, L.; Zozulya, D.; Selivanova, E.; Serov, P.; Bazai, A. Distribution of Trace Elements...chemical variability and fractionation degree of albite-spodumene and barren feldspar pegmatites of the...deposit in the Kola region, Russia. K-feldspar from albite-spodumene pegmatite is represented by two generations:...component; and (ii) high contents of Sr, Ba, Pb, and an albite component. K/Sr, K/Ba, Rb/Ba, and Rb/Sr element...decrease in K-feldspar, from feldspar pegmatites to albite-spodumene pegmatites. These trends reflect different |  | | Journal (article/letter/editorial) | | (Salamanca, Spain): characteristics and petrogenesis E. RODAROBLES1, A. PESQUERAPEREZ1, F. VELASCOROLDAN1...Mineralogia y Petrologia, Universidad del Pals Vasco 644, E-48080, Bilbao, Spain 2 Laboratoire de Min6ralogie...(pegmatites T1, T2, T3 and T4) with quartz, K-feldspar > albite, muscovite, tourmaline _+ andalusite __ garnet;...and T8), with lepidolite, cassiterite, columbite, albite > K-feldspar, montebrasite and spodumene. Tourmaline...the Fregeneda area (Salamanca, Spain) has been E. RODA ROBLESETAL. studied. Different types of pegmatite |  | Sánchez-Muñoz, Luis, Müller, Axel, Andrés, Sol López, Martin, Robert F., Modreski, Peter J., de Moura, Odulio J.M. (2017) The P–Fe diagram for K-feldspars: A preliminary approach in the discrimination of pegmatites. Lithos, 272. 116-127 doi:10.1016/j.lithos.2016.10.030 | Journal (article/letter/editorial) | | Geológicas, Universidad Complutense de Madrid, E-28040, Spain. MA e Natural History Museum, London SW7 5BD...Instituto de Cerámica y Vidrio – CSIC, Kelsen 5, E-28049 Madrid, Spain,*lsm@icv.csic.es Earth and Planetary...criteria applied mainly to mineralized pegmatites, and do not lead to broadly defined or accepted categories...important to note that many pegmatite occurrences do not contain rare minerals, and a clear geochemical...III and IV, although accessory apatite and monazite do occur. The silica-rich pegmatites of type II consist |  | | Book | | Singapore Libre,, ,.u.,. '"--'·"·· "··M~ lo'f e 5 S I , J. 1 C. I \ Copyright © 1982 by J ohn...International Geological Correla tion P rogramme at th e meeting in Prague l 97 1.' Vol. 3 contains papers... International Geological Co rrelatio n Programm e. III. P rague. Ustfedni ustav Geologicky. IV . Metallizatio... . . . . . . . . . . . . . . . 91 W. Gocht and E. Pluhar Fluid Inclusion Evidence on the Genesis of...the Formation of some Tin-tungsten Deposits in Portugal . . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | These features are consistent with early growth but do not require it. In contrast, experimental petrology...crystalline ones, demonstrates that natural magmas do not precipitate significant K-feldspar while they...non-megacrystic granites as well) require exsolution of albite component down to temperatures of *400 °C. The...Carolina at Chapel Hill, Chapel Hill, NC 27599-3315, USA e-mail: afg@unc.edu Present Address: B. R. Johnson Anadarko...by their textures and mineral compositions. They do indeed show many aspects of metamorphic rocks, although |  | Müller, Axel, Seltmann, Reimar, Halls, Christopher, Siebel, Wolfgang, Dulski, Peter, Jeffries, Teresa, Spratt, John, Kronz, Andreas (2006) The magmatic evolution of the Land's End pluton, Cornwall, and associated pre-enrichment of metals. Ore Geology Reviews, 28 (3) 329-367 doi:10.1016/j.oregeorev.2005.05.002 | Journal (article/letter/editorial) | | megacrystic biotite (Mg-siderophyllite) granites and albite microgranites and younger Li-siderophyllite granites...common crustal magmatic reservoir, apart from the albite microgranite, which has a different source. Trace...Trondheim, Norway. Tel.: +47 73904216; fax: +47 73921620. E-mail address: Axel.Muller@ngu.no (A. Müller). 0169-1368/$...and is composed of zinnwaldite–albite granite, being the only known albite granite in the Land’s End pluton...directly from the small intrusion and offsets the albite microgranite (Fig. 3b). The youngest dyke generation |  | Müller, Axel, Ihlen, Peter M., Snook, Ben, Larsen, Rune Berg, Flem, Belinda, Bingen, Bernard, Williamson, Ben J. (2015) The Chemistry of Quartz in Granitic Pegmatites of Southern Norway: Petrogenetic and Economic Implications. Economic Geology, 110 (7) 1737-1757 doi:10.2113/econgeo.110.7.1737 | Journal (article/letter/editorial) | | http://econgeol.geoscienceworld.org/. † Corresponding author: e-mail: axel.muller@nhm.uio.no 0361-0128/15/4347/1737-21...replacement zones consisting of “cleavelandite” (albite variety), “amazonite” (K-feldspar variety), quartz...of the pegmatites and a new sequence of quartz-albite-epidote-stilpnomelane-pyritecalcite-fluorite crystallized...et al., 2005, 2008a). However, mica and feldspar do show significant chemical variations and, therefore...460000 an dF dF au au lt Z on lt Z e 6495000 Hynnekleiv e 6495000 Hynnekleiv BAMBLE DOMAIN 5 |
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