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Title

A contribution to regional tin exploration in the Iberian Massif

AuthorsFernandez-Turiel, J. L. ; Durán Barrachina, M. E.
Issue DateMar-1989
PublisherElsevier
CitationJournal of Geochemical Exploration 31(3): 295-305 (1989)
AbstractThe aim of this study was to develop a method for regional tin exploration applicable to the geological, physiographic and climatic characteristics of the western Iberian Peninsula. During the spring of 1985, 299 panned concentrates and water samples were collected from the drainage system of an area of 150 km2 in the east of the province of Zamora (Spain). One split of the panned concentrates was analyzed for Sn, W, As, Ph, Zn, Cu and Ba, while the heavy-mineral composition was determined on the other. Fluorine, Na and K were analyzed in the water samples. Log-probability plots were used to determine regional background and anomaly class levels. The pattern of Sn content of the panned concentrates and of F of the stream water samples clearly define anomalous zones. The mineralogical study of the concentrates revealed that cassiterite produces geochemical Sn anomalies. There are two types of cassiterite: one brown in colour and the other black and accompanied by wolframite. The first type is related to cassiterite disseminations in aplites and cassiterite-quartz veins and the second type to cassiterite-quartz veins and cassiterite disseminations in leucogranites and aplopegmatites. Thus, the results obtained suggest that Sn and F can be used to find new mineralizations.
Description11 páginas, 5 figuras, 1 tabla.
Publisher version (URL)http://dx.doi.org/10.1016/0375-6742(89)90107-6
URIhttp://hdl.handle.net/10261/31623
DOI10.1016/0375-6742(89)90107-6
ISSN0375-6742
Appears in Collections:(ICTJA) Artículos
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