Encontrados 12 documentos, a visualizar página 1 de 2
Combined U–Pb geochronology and Lu–Hf isotope systematics by LAM–ICPMS of zirco...
Teixeira, R.J.S.; Neiva, A.M.R.; Silva, P.B.; Gomes, M.E.P.; Andersen, T.; Ramos, J.M.F.
Geochemistry of waters associated with the old mine workings at Fonte Santa (NE...
Gomes, M.E.P.; Antunes, I.M.H.R.; Silva, P.B.; Neiva, A.M.R.; Pacheco, F.A.L.
Weathering and hydrochemistry associated with the old mine workings at Fonte Sa...
Gomes, M.E.P.; Antunes, I.M.H.R.; Silva, P.B.; Neiva, A.M.R.; Pacheco, Fernando António Leal
Geochemistry of waters associated with the old mine workings at Fonte Santa (NE...
Gomes, M.E.P.; Antunes, I.M.H.R.; Silva, P.B.; Neiva, A.M.R.; Pacheco, F.A.L.
Geochemistry of waters associated with the old mine workings at Fonte Santa (NE...
Gomes, M.E.P.; Antunes, I.M.H.R.; Silva, P.B.; Neiva, A.M.R.; Pacheco, F.A.L.DOI:10.1016/j.gexplo.2010.05.001 ; The quartz veins containing scheelite from Fonte Santa mine cut the Lower 10 Ordovician quartzites. A muscovite-biotite granite (G1) and a muscovite granite (G2), 11 both S-type, crop out close to the Fonte Santa mine and are related to the Moncorvo - 12 Bemposta shear zone. The most altered samples of G2 show intense muscovitization and 13 microclinization and contain chlori...
Mineralogia dos filões aplito-pegmatíticos litiníferos da região de Segura
Antunes, I.M.H.R.; Neiva, A.M.R.; Silva, M.M.V.G.; Silva, P.B.Publicação comemorativa do "Ano Internacional do Planeta Terra". ; Na região de Segura, os filões aplito-pegmatíticos litiníferos Variscos instruíram o Complexo Xisto-Grauváquico, Câmbrico. Os filões pegmatíticos são do tipo REL-Li e incluem-se na família dos pegmatitos LCT. A ocorrência de lepidolite, montebrasite, microlite, cassiterite e minerais do grupo da columbite primários sugerem um elevado grau de ...
Weathering and hydrochemistry associated with the old mine workings at Fonte Sa...
Gomes, M.E.P.; Antunes, I.M.H.R.; Pacheco, F.A.L.; Neiva, A.M.R.; Silva, P.B.Weathering and hydrochemistry associated with the old mine workings at Fonte Santa (NE Portugal)
Geochemistry of minerals, weathering and hidrogeochemistry from the Fonte Santa...
Gomes, M.E.P.; Antunes, I.M.H.R.; Neiva, A.M.R.; Pacheco, Fernando António Leal; Silva, P.B.
Geochemistry of minerals, waters and weathering from the Fonte Santa mine area ...
Gomes, M.E.P.; Antunes, I.M.H.R.; Neiva, A.M.R.; Pacheco, F.A.L.; Silva, P.B.The quartz veins containing scheelite from Fonte Santa mine area were exploited for W between 1942 and 1982. At the end of November 2006, a flood event damaged the dam land of Fonte Santa mine and metal content of water increased. Fonte Santa mine area cuts the quartzites close to the Fonte Santa muscovite granite. The granite contains quartz, microcline, albite, muscovite, chlorite, columbite-tantalite, volfra...
Geochemistry of Li-bearing aplite-pegmatite veins from Cabeço Queimado and asso...
Antunes, I.M.H.R.; Neiva, A.M.R.; Silva, M.M.V.G.; Ramos, J.M.F.; Silva, P.B.At Segura area, two-mica granite, muscovite granite, granitic aplite veins and Libearing granitic aplite-pegmatite veins from Cabeco Queimado intruded the Cambrian schist-metagraywacke complex. Aplite veins also intruded both granites. Variation diagrams of major and trace elements of the granitic rocks show fractionation trends for: a) two-mica granite and Li-bearing aplite-pegmatite veins; b) muscovite granit...
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