The Lece-Radan area of the Oligo-Miocene magmatic complex (former Tethyan active margin, southern Serbia) contains more or less altered volcanic and/or pyroclastic rocks of predominant andesitic, andesitic-dacitic, to dacitic composition. Alteration seen at exposures varies in type and intensity. Samples with documented alunitization were collected from hydrothermally altered zones embedded within local geological units of Oligo-Miocene age. Mineralogical-chemical study has confirmed for the first time the presence of alunite group minerals (thirty-one occurrences) in this area. The minerals of the alunite group described exhibit different compositions that are remarkably consistent with both different alteration types and host lithologies. Six samples characterized in detail show the following solid solutions: Alu52Nal43Sch5, Alu48Nal40Sch12, Nal48Alu35Sch17, Nal44Alu35Sch21, Alu36Sch33Nal31 and Sch46Alu27Nal27 (Alu, Nal and Sch refer to alunite, natroalunite and schlossmacherite, res...pectively). The cross-cutting alunite-bearing fracture pattern and its density indicate a high-sulphidation epithermal palaeoenvironment. The alunite discovery is consistent with the structural setting (fracture frequency) emphasizing its dominant role in controlling the local mineralization.
Keywords:
Lece-Radan volcanic complex / alunite group minerals / high-sulphidation epithermal environment / structural factor / Vardar Zone / Serbo-Macedonian metallogenic province
Source:
Geological Quarterly, 2021, 65, 1, 19-
Publisher:
Polish Geological Institute - National Research Institute
TY - JOUR
AU - Tančić, Pavle
AU - Spahić, Darko
AU - Jovanović, Dragan
AU - Ćirić, Aleksandra
AU - Poznanović-Spahić, Maja
AU - Vasić, Nenad
PY - 2021
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/5884
AB - The Lece-Radan area of the Oligo-Miocene magmatic complex (former Tethyan active margin, southern Serbia) contains more or less altered volcanic and/or pyroclastic rocks of predominant andesitic, andesitic-dacitic, to dacitic composition. Alteration seen at exposures varies in type and intensity. Samples with documented alunitization were collected from hydrothermally altered zones embedded within local geological units of Oligo-Miocene age. Mineralogical-chemical study has confirmed for the first time the presence of alunite group minerals (thirty-one occurrences) in this area. The minerals of the alunite group described exhibit different compositions that are remarkably consistent with both different alteration types and host lithologies. Six samples characterized in detail show the following solid solutions: Alu52Nal43Sch5, Alu48Nal40Sch12, Nal48Alu35Sch17, Nal44Alu35Sch21, Alu36Sch33Nal31 and Sch46Alu27Nal27 (Alu, Nal and Sch refer to alunite, natroalunite and schlossmacherite, respectively). The cross-cutting alunite-bearing fracture pattern and its density indicate a high-sulphidation epithermal palaeoenvironment. The alunite discovery is consistent with the structural setting (fracture frequency) emphasizing its dominant role in controlling the local mineralization.
PB - Polish Geological Institute - National Research Institute
T2 - Geological Quarterly
T1 - Occurrences and characterization of alunite group minerals from the Lece-Radan Oligo-Miocene volcanic complex (Serbia)
VL - 65
IS - 1
SP - 19
DO - 10.7306/gq.1587
ER -
@article{
author = "Tančić, Pavle and Spahić, Darko and Jovanović, Dragan and Ćirić, Aleksandra and Poznanović-Spahić, Maja and Vasić, Nenad",
year = "2021",
abstract = "The Lece-Radan area of the Oligo-Miocene magmatic complex (former Tethyan active margin, southern Serbia) contains more or less altered volcanic and/or pyroclastic rocks of predominant andesitic, andesitic-dacitic, to dacitic composition. Alteration seen at exposures varies in type and intensity. Samples with documented alunitization were collected from hydrothermally altered zones embedded within local geological units of Oligo-Miocene age. Mineralogical-chemical study has confirmed for the first time the presence of alunite group minerals (thirty-one occurrences) in this area. The minerals of the alunite group described exhibit different compositions that are remarkably consistent with both different alteration types and host lithologies. Six samples characterized in detail show the following solid solutions: Alu52Nal43Sch5, Alu48Nal40Sch12, Nal48Alu35Sch17, Nal44Alu35Sch21, Alu36Sch33Nal31 and Sch46Alu27Nal27 (Alu, Nal and Sch refer to alunite, natroalunite and schlossmacherite, respectively). The cross-cutting alunite-bearing fracture pattern and its density indicate a high-sulphidation epithermal palaeoenvironment. The alunite discovery is consistent with the structural setting (fracture frequency) emphasizing its dominant role in controlling the local mineralization.",
publisher = "Polish Geological Institute - National Research Institute",
journal = "Geological Quarterly",
title = "Occurrences and characterization of alunite group minerals from the Lece-Radan Oligo-Miocene volcanic complex (Serbia)",
volume = "65",
number = "1",
pages = "19",
doi = "10.7306/gq.1587"
}
Tančić, P., Spahić, D., Jovanović, D., Ćirić, A., Poznanović-Spahić, M.,& Vasić, N.. (2021). Occurrences and characterization of alunite group minerals from the Lece-Radan Oligo-Miocene volcanic complex (Serbia). in Geological Quarterly
Polish Geological Institute - National Research Institute., 65(1), 19.
https://doi.org/10.7306/gq.1587
Tančić P, Spahić D, Jovanović D, Ćirić A, Poznanović-Spahić M, Vasić N. Occurrences and characterization of alunite group minerals from the Lece-Radan Oligo-Miocene volcanic complex (Serbia). in Geological Quarterly. 2021;65(1):19.
doi:10.7306/gq.1587 .
Tančić, Pavle, Spahić, Darko, Jovanović, Dragan, Ćirić, Aleksandra, Poznanović-Spahić, Maja, Vasić, Nenad, "Occurrences and characterization of alunite group minerals from the Lece-Radan Oligo-Miocene volcanic complex (Serbia)" in Geological Quarterly, 65, no. 1 (2021):19,
https://doi.org/10.7306/gq.1587 . .
