Geochemistry of minerals, waters and weathering from the Fonte Santa mine area, NE of Portugal
作者： Ana Margarida R. Neiva , F. A. L. Pacheco , Paulo Bravo Silva , I. Margarida H. Ribeiro Antunes , M. E. P. Gomes
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摘要: 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 dam land metal content water increased. cuts quartzites close to muscovite granite. granite contains quartz, microcline, albite, muscovite, chlorite, columbite-tantalite, volframite, W-ixiolite ilmenite. contain tourmaline, scheelite, pyrrhotite, pyrite, sphalerite, chalcopyrite, galena, arsenopyrite, magnetite, jarosite, phosphates Pb, Fe Al. waters related are poorly mineralized, with electrical conductivity < 965 μS / cm, mixed type or HCO3 SO4 types. These have Mn contents that forbid use human consumption agriculture. Sodium, Mg K associated alteration chlorite country rock, while Ca is W-bearing veins. Key-words: mineralizations, waters, contamination
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