 | Martins, T., Lima, A., Simmons, W. B., Falster, A. U., Noronha, F. (2011) GEOCHEMICAL FRACTIONATION OF Nb-Ta OXIDES IN Li-BEARING PEGMATITES FROM THE BARROSO-ALVAO PEGMATITE FIELD, NORTHERN PORTUGAL. The Canadian Mineralogist, 49 (3) 777-791 doi:10.3749/canmin.49.3.777 | Journal (article/letter/editorial) | | Li-BEARING PEGMATITES FROM THE BARROSO–ALVÃO PEGMATITE FIELD, NORTHERN PORTUGAL Tânia MARTINS§ Geology Centre...University of Porto, Rua do Campo Alegre, 687, Porto, Portugal Alexandre LIMA Geology Centre, and Department...University of Porto, Rua do Campo Alegre, 687, Porto, Portugal William B. SIMMONS and Alexander U. FALSTER Department...Porto, Portugal Abstract The Barroso–Alvão granitic pegmatite field, located in northern Portugal, is known...petalite-bearing bodies. Recent work on this pegmatite field characterized other types of pegmatites, and |  | | Journal (article/letter/editorial) | | EVOLUTION OF MICAS IN THE BARROSO–ALVÃO PEGMATITE FIELD, NORTHERN PORTUGAL Tânia MARTINS§ Geology Centre...University of Porto, Rua do Campo Alegre, 687, Porto, Portugal Encarnación RODA-ROBLES Dpto. Mineralogia y Petrologia...University of Porto, Rua do Campo Alegre, 687, Porto, Portugal Philippe de Parseval Géosciences Environnement...the granitic pegmatites found in the Barroso–Alvão pegmatite field and the Cabeceiras de Basto granite...paragenesis. This pegmatite field in northern Portugal has numerous and varied aplite–pegmatite intrusions as |  | Novák, Milan, Vieira, Romeu, Lima, Alexandre, Škoda, Radek, Martins, Tania, dos Anjos Ribeiro, Maria (2009) Ferronigerite with dominant substitution TiSn−1 in muscovite+chlorite aggregate from massive quartz nodule associated with a petalite-rich aplite-pegmatite of the Barroso-Alvão pegmatite field, Northern Portugal. Neues Jahrbuch für Mineralogie - Abhandlungen, 186 (1) 67-78 doi:10.1127/0077-7757/2009/0132 | Journal (article/letter/editorial) | | aggregate from massive quartz nodule associated with a petalite-rich aplite-pegmatite of the Barroso-Alvão...Barroso-Alvão pegmatite field, Northern Portugal Milan Novák, Romeu Vieira, Alexandre Lima, Radek Škoda, Tania Martins...muscovite+chlorite aggregate from a quartz nodule enclosed in a mica schist host. The quartz nodule is located close...petalite-rich aplite-pegmatite dike Lousas from the Barroso-Alvão pegmatite field. Ferronigerite-6N6S...Li2O (2.35-3.12 apfu) seem to be too high. The quartz nodule consists of an aggregate of zoned tourmaline |  | Dias, Filipa, Ribeiro, Ricardo, Gonçalves, Filipe, Lima, Alexandre, Roda-Robles, Encarnación, Martins, Tânia (2023) Calibrating a Handheld LIBS for Li Exploration in the Barroso–Alvão Aplite-Pegmatite Field, Northern Portugal: Textural Precautions and Procedures When Analyzing Spodumene and Petalite. Minerals, 13 (4) 470 doi:10.3390/min13040470 | Journal (article/letter/editorial) | | Li Exploration in the Barroso–Alvão Aplite-Pegmatite Field, Northern Portugal: Textural Precautions and...Handheld LIBS for Li Exploration in the Barroso–Alvão Aplite-Pegmatite Department of Geosciences, Environment...Porto, Rua Campo Alegre, 687, 4169-007 Porto, Portugal Institute of Earth Sciences, ICT, Pole of University...University of Porto, 4169-007 Porto, Portugal Department of Geology, University of País Vasco (UPV/EHU)...spodumene, such as those from the Barroso– Alvão (BA) aplite-pegmatite field, calibrating a portable laser-induced |  | Lepore, G. O., Bindi, L., Di Benedetto, F., Mugnaioli, E., Viti, C., Zanetti, A., Ciriotti, M. E., Bonazzi, P. (2017) A multimethodic approach for the characterization of manganiceladonite, a new member of the celadonite family from Cerchiara mine, Eastern Liguria, Italy. Mineralogical Magazine, 81 (1) 167-173 doi:10.1180/minmag.2016.080.087 | Journal (article/letter/editorial) | | consists of braunite with minor quartz layers interbedded with hematite and quartz bands originated at low-temperature...with calcite and braunite (L. Ceccantini photo); field of view is 2 mm. hkl d(obs) d(calc) I/I0 001...electron FIG. 2. (a) Low magnification bright field TEM image of manganiceladonite forming nanosized...C. (1992) A manganese-rich miarolitic granite pegmatite assemblage from the Sawtooth batholith, South...evolution of micas in the Barroso–Alvão pegmatite field, Northern Portugal. The Canadian Mineralogist |  | Roda-Robles, Encarnación, Gil-Crespo, Pedro Pablo, Pesquera, Alfonso, Lima, Alexandre, Garate-Olave, Idoia, Merino-Martínez, Enrique, Cardoso-Fernandes, Joana, Errandonea-Martin, Jon (2022) Compositional Variations in Apatite and Petrogenetic Significance: Examples from Peraluminous Granites and Related Pegmatites and Hydrothermal Veins from the Central Iberian Zone (Spain and Portugal) Minerals, 12 (11) 1401 doi:10.3390/min12111401 | Journal (article/letter/editorial) | | Veins from the Central Iberian Zone (Spain and Portugal) Encarnación Roda-Robles 1, *, Pedro Pablo Gil-Crespo...Veins from the Central Iberian Zone (Spain and Portugal). Minerals 2022, 12, 1401. https:// doi.org/10...Alegre, 4169-007 Porto, Portugal ICT (Institute of Earth Sciences)—Porto Pole (Portugal), Rua Campo Alegre...Alegre, 4169-007 Porto, Portugal Department of Geology and Subsurface, Centro Nacional Instituto Geológico...during the evolution of granitic magmas and as a pegmatite exploration tool. With this aim, a detailed compositional |  | | Journal (article/letter/editorial) | | Part II: Sn, W and Ti minerals in intra-granitic quartz veins Teresa LLORENS*, María Candelas MORO Department...tllg@usal.es * Corresponding author The mineralized quartz veins hosted by the distal granitic facies of the...the late open spaces and cavities were sealed by quartz and carbonates. The crystallization of wolframite...of the main Fe–Zn sulphide precipitation in the quartz veins. The scarcity of Sn during the latest stages...the Jálama Batholith. Keywords: Jálama Batholith, quartz veins, cassiterite, wolframite, rutile, ixiolite |  | Marchal, Karen L., Simmons, William B., Falster, Alexander U., Webber, Karen L., Roda-Robles, Encarnación (2014) GEOCHEMISTRY, MINERALOGY, AND EVOLUTION OF Li-Al MICAS AND FELDSPARS FROM THE MOUNT MICA PEGMATITE, MAINE, USA. The Canadian Mineralogist, 52 (2) 221-233 doi:10.3749/canmin.52.2.221 | Journal (article/letter/editorial) | | Li-Al MICAS AND FELDSPARS FROM THE MOUNT MICA PEGMATITE, MAINE, USA Karen L. MARCHAL§, William B. SIMMONS...poorly zoned, sodic LCT-type pegmatite consisting dominantly of quartz, albite, and muscovite in the...portion of the pegmatite. Micas are the principal K minerals throughout the pegmatite. Potassium feldspar...pollucite are restricted to the core zone of the pegmatite. The dearth of rare element (Li, F, Cs, and Rb)...substitution in minerals of the outer portion of the pegmatite and the relatively low K/ Rb ratio of K-feldspar |  | | Journal (article/letter/editorial) | | II, BAZZITE, BAVENITE) FROM EUXENITE-TYPE NYF PEGMATITE RELATED TO THE OROGENIC ULTRAPOTASSIC TŘEBÍČ...Abstract An intragranitic, euxenite-type NYF pegmatite, Kožichovice II, derived from the ultrapotassic...aggregates. They are typically enclosed in massive quartz at the contact with albite or K-feldspar. Beryl...fractionation, granitic pegmatite, Třebíč pluton, Czech Republic. Sommaire La pegmatite intragranitique de...radiaires. Ils sont typiquement encaissés dans le quartz massif au contact avec albite ou feldspath potassique |  | | Journal (article/letter/editorial) | | grained inequigranular rock mainly comprised of quartz, albite, K-feldspar, and muscovite. Accessory minerals...Keppler, 1997; Linnen, 1998; London, 2008) and field evidences in pegmatites (Dewaele et al., 2015) and...leucogranite, aplitepegmatite dykes, greisen and quartz veins hosted in the metamorphic country rock (Llorens...with fine to medium grain size. It consists of quartz, albite, white mica and microcline, as essential...essential constituents. XRD analyses indicate that quartz varies from 15 to 67 wt.%, albite from 2 to 40 wt |  | | Journal (issue) | | in southwestern Fennoscandia: Backdrop to the pegmatite fields of southern Norway……………………………………………………………………………………...paleoclimate controls of lithium-cesium-tantalum (LCT) pegmatite genesis, exhumation, and preservation……………………...earth element mineralization in a rediscovered pegmatite in the Stettin Complex, Wausau Syenite Compley...Mineralogical study of the Gonçalo Li-pegmatite deposit, Portugal……………………………………..23 FALSTER, A.U., SIMMONS...perhamite-pollucite-lepidolite-fluorapatite-quartz assemblage in the Emmons pegmatite, Greenwood, Oxford Co., Maine |  | | Journal (article/letter/editorial) | | Theessential essentialminerals mineralsare arequartz, quartz,albite, albite,K-feldspar, K-feldspar,musmusgneisses...capacity may result in a more positive change than in real-life situations. However, steady-state mass balance...Li-bearing pegmatites from the Barroso–Alvão pegmatite field, Northern Portugal. Can. Mineral. 2011, 49, 777–791 |  | | Journal (article/letter/editorial) | | Isotopic compositions in the Monts d’Ambazac Pegmatite Field (French Massif Central) RI P T exhibit a...with the degree of magmatic evolution of each pegmatite type: from 630 ppm in Type II up to 13,500 ppm...ppm in the more evolved NU Type VI pegmatite. Although the rare-element contents e.g., Li, Cs, Ta of...of the micas are MA consistent with pegmatite differentiation, 7Li (‰) are firstly, independent of the...degree of magmatic differentiation (independent of pegmatite type) and secondly, independent ED of the content |  | | Journal (article/letter/editorial) | | Manuscript Geology and chemistry of Variscan-type pegmatite systems (SE Germany) With special reference to...Dill, Geology and chemistry of Variscan-type pegmatite systems (SE Germany) With special reference to...pertain. Geology and chemistry of Variscan-type pegmatite systems (SE Germany) - With special reference...D-30167 Hannover, Germany Abstract: The geology of pegmatite systems encompasses lithology, shape, and structure...Zn-Cu-Bi-Rb-Nb in), (2) supergene (Zr-Ti in). Key words: Pegmatite; lithology; structural geology; chemistry; Variscan-type |  | | Journal (article/letter/editorial) | | oxides from pegmatites of the Cape Cross–Uis pegmatite belt, Namibia WARRICK C. FUCHSLOCH*, PAUL A.M...wfuchsloch@gmail.com Abstract The Cape Cross-Uis pegmatite belt, Damara Orogen, north-central Namibia hosts...Ta-Nboxides from an aqueous fluid at the late-stages of pegmatite petrogenesis is highly debated, significantly...Columbite-group minerals, tapiolite, cassiterite, granitic pegmatite, Damara Orogen, Namibia. Introduction The internal...internal evolution processes of a pegmatite forming magma, such as fractionation (Černý and Ercit, 1985; |  | | Journal (article/letter/editorial) | | isotopic constraints on the origin of Li-poor pegmatite with implications for Li mineralization Bin Chen...isotopic constraints on the origin of Li-poor pegmatite with implications for Li mineralization, Chemical...isotopic constraints on the origin of Li-poor pegmatite with implications for Li mineralization Bin Chen*...alternative model to interpret the genesis of pegmatite and factors controlling Li mineralization based...Li-poor pegmatites (barren) from the Qinghe of pegmatite field of the Altai orogen (NW China). The Qinghe |  | Van Daele, J., Hulsbosch, N., Dewaele, S., Boiron, M.-C., Piessens, K., Boyce, A., Muchez, Ph. (2018) Mixing of magmatic-hydrothermal and metamorphic fluids and the origin of peribatholitic Sn vein-type deposits in Rwanda. Ore Geology Reviews, 101. 481-501 doi:10.1016/j.oregeorev.2018.07.020 | Journal (article/letter/editorial) | | leucogranite mineralization, pegmatites, cassiterite, quartz veins, fluid mixing, geochemical modelling Abstract...Abstract The fluid sources of granite-related Sn-quartz vein deposits are commonly obscured by fluid mixing...metamorphic fluids in the formation of peribatholitic Sn-quartz veins. In particular, fluid mixing in the Sn-mineralized...Sn-mineralized Rwamagana-Musha-Ntunga pegmatite-quartz vein field in East Rwanda has been evaluated by the...the following four methods: quartz stable isotopes, muscovite geochemistry, fluid inclusion microthermometry |  | | Journal (article/letter/editorial) | | mineralizing fluid are similar to those of oil-field brine (Ye Lin,2000). Therefore, it is suggested...mineralizing fluid of the deoposit possibly came from oil-field brine of Majiang paleooil pool. The mineralizing...contains higher SO42and Cl-, was derved from oil-field brine, leached Cd and Zn etc. ore-forming elecments...China. The deposit contains a number of tungsten quartz veins occurring in precambrian lower grade metamorphic...ore-forming fluid through study of the inclusions in quartz associated with ore bodies. Our work shows that |
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