A reinterpretation of the genesis of the Cae Coch pyrite deposit, north Wales

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doi: 10.1144/gsjgs.149.4.0581
Authors:Bottrell, S. H.; Morton, M. D. B.
Author Affiliations:Primary:
University of Leeds, Department of Earth Sciences, Leeds, United Kingdom
Volume Title:Journal of the Geological Society of London
Source:Journal of the Geological Society of London, 149(4), p.581-584. Publisher: Geological Society of London, London, United Kingdom. ISSN: 0016-7649
Publication Date:1992
Note:In English. 17 refs.; illus., incl. 1 table
Summary:Data are presented on S isotope and Ca/Ni ratios of samples from the Cae Coch massive pyrite body and adjacent lithogies near Trefriw, North Wales. Most of the pyrite has light delta34S (-20 to -24 per mille) indicative of a predominantly biogenic sulphur source; a few heavier values are interpreted as a result of sulphur depletion during the last stages of bacterial sulphide production. These values are much lighter than those from volcanic-associated, exhalative massive sulphide deposits found in similar geological settings elsewhere; the Co/Ni ratios at Cae Coch (0.2-0.5) are also far lower than usual for such deposits. An alternative syn-diagenetic inhalative origin is proposed for the sulphide mineralization at Cae Coch. [R.A.H.]
Subjects:Caradocian; Depositional environment; Iron ores; Isotope ratios; Isotopes; Marine environment; Massive deposits; Massive sulfide deposits; Metal ores; Mineral deposits, genesis; Ordovician; Paleozoic; Pyrite; S-34/S-32; Stable isotopes; Sulfides; Sulfur; Upper Ordovician; Europe; Great Britain; United Kingdom; Wales; Western Europe; Cae Coch Deposit; Trefriw Wales
Coordinates:N530900 N530900 W0035000 W0035000
Abstract Numbers:94M/1936
Record ID:2008063293
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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