Geological, mineralogical and geochemical characteristics of the Carles gold mineralization, Asturias, Spain |
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| Authors: | J García Iglesias and J Loredo |
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| Institution: | (1) Escuela de Minas, Independencia 13, 33004 Oviedo, Spain |
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| Abstract: | In the western part of the Cantabrian Zone, Carlés gold mineralization is related to an igneous stock of granodioritic composition which intruded into devonian limestones, forming a well-developed exo-skarn and quantitatively less important endo-skarn. The skarn is characterized by the presence of garnet, pyroxenes, amphiboles, layers of hornfels corresponding to pelitic intercalations, and a number of opaque oxides and sulfides. Gold inclusions in arsenic minerals are present in quartzveins occurring in the skarn and in the granodiorite, but gold-rich zones are limited to the skarn. The crystallization temperature of arsenopyrite is coherent with T-P conditions (T = 460°C, P = 2200 bars) deduced from intersections of isochores of aqueous and carbonic fluid inclusions studied in samples of cogenetic quartz. |
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