Hydrothermal alteration associated with gold mineralization in the southern Apuseni Mountains, Romania; preliminary Sr isotopic data

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doi: 10.1007/s001260050167
Authors:Alderton, D. H. M.; Thirlwall, M. F.; Baker, J. A.
Author Affiliations:Primary:
London University, Royal Holloway, Egham, United Kingdom
Volume Title:Mineralium Deposita
Source:Mineralium Deposita, 33(5), p.520-523. Publisher: Springer-Verlag, Berlin, Federal Republic of Germany. ISSN: 0026-4598
Publication Date:1998
Note:In English. 13 refs.; illus., incl. 1 table, sect.
Summary:Precious metal mineralization in the S Apuseni Mts of W Romania is hosted by mid-Miocene (∼14 m.y.) andesitic stocks and lava flows. The mineralized veins are surrounded by aureoles of 13.7-15.7 m.y. old hydrothermal alteration, which immediately followed igneous activity and consists of quartz, sericite, K-feldspar, pyrite and calcite. The alteration process caused a total homogenization of initial 87Sr/86Sr in the rocks. A large influx of radiogenic Sr took place during alteration, this Sr probably being derived from the hydrothermal leaching of continental metasedimentary rocks in the basement. [M.K.N.]
Sections:Geochemistry
Subsections:Minerals and ores
Subjects:Alkaline earth metals; Andesites; Gold ores; Hydrothermal alteration; Igneous rocks; Isotopes; Metal ores; Metals; Metasomatism; Mica group; Mineralization; Sericite; Sheet silicates; Silicates; Strontium; Veins; Volcanic rocks; Apuseni Mountains; Europe; Romania; Southern Europe
Abstract Numbers:99M/2800
Record ID:1999072772
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe
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