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Title: Fluid inclusion and stable isotope studies in Sn-W deposits of western Spain
Authors: Perez-Torrado, Francisco-Jose 
Mangas, José 
UNESCO Clasification: 250611 Mineralogía
Issue Date: 1995
Publisher: Balkema
Conference: Third Biennial SGA Meeting
Abstract: Most of the Spanish Sn-W mineralizations are related to the syn- to late-tectonic Hercynian granites. Fluid inclusion and stable isotope studies have been carried out in quartz, cassiterite, scheelite and wolframite from different types of deposits : Sn diseminations in apogranites (Golpejas and Penouta), Sn pegmatite (Feli) and Sn, Sn-W, W quartz veins ( Teba, San Finx, La Parrilla and Virgen de la Penouta), Sn The fluids probably responsible for the Sn-W mineralizations belong to H₂O-NaCl-CO₂-CH₄-N₂-H₂S system with salinities below 15 Wi. % eq. NaCl and homogenization temperatures ranging between 240 and 430⁰C. With salinitIes below 15 wt. % eq. NaCl and homogenization temperatures ranging between 240 and 430⁰C. δ18 O (SMOW) %₀ values show small variations: from 9.4 to 15.6 in quartz, -3.8 to 7.3 in cassiterite, 5.8 to 6.9 in scheelite, 4.9 in wolframite, and -2.9 to 8.2 in waterof the metalliferous fluids. These fluids are mainly magmatic or with incorporation of other isotopically ligther waters.
ISBN: 90-5410-550-X
Source: Mineral Deposits : from Their Origin to Their Environmental Impacts/Jan Pasava, Bohdan Kribek & Karel Zak, p. 473-476 [Third Biennial SGA Meeting, Prague, Czeich Republic, 28-31 AUGUST 1995 ]
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