Sulphur isotope geochemistry of the ores and country rocks at the Almadén mercury deposit, Ciudad Real, Spain

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doi: 10.1016/0016-7037(92)90169-J
Authors:Saupé, Francis; Arnold, Michel
Author Affiliations:Primary:
Centre de Recherches Pétrographiques et Géochimiques, Vandoeuvre-lès-Nancy, France
Volume Title:Geochimica et Cosmochimica Acta
Source:Geochimica et Cosmochimica Acta, 56(10), p.3765-3780. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037
Publication Date:1992
Note:In English. 89 refs.; illus. incl. sects., 6 tables, sketch map
Summary:Sulphur isotope analyses are presented of ore minerals (cinnabar, metacinnabar, pyrite, baryte), other pyrites, quartzite, shale, lamprophyres, spilites and dolerite. Average delta34S values differ between the three orebodies to indicate three different mineralization episodes and/or processes. These results confirm other data that these bodies were formed during three distinct episodes under slightly differing physicochemical conditions, with ore formation soon after sedimentation at or near the sediment/water interface. The mean S isotopic composition of cinnabar (delta34S 5.6 per mille) is close to that of the Footwall Shales and to the mean of the volcanic rocks, and either was a possible S source, although the Shales were more likely. Sea- water sulphate was the likely S source in the San Fransisco orebody because of its isotopically heavier delta34S. Where pyrite and cinnabar are coeval they were deposited in isotopic disequilibrium. [R.K.H.]
Subjects:Cinnabar; Country rocks; Economic geology; Isotopes; Mercury ores; Metal ores; S-34/S-32; Stable isotopes; Sulfides; Sulfur; Castilla-La Mancha Spain; Ciudad Real Spain; Europe; Iberian Peninsula; Southern Europe; Spain; Almaden Deposit
Abstract Numbers:93M/1877
Record ID:1992060820
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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