caa a22 4500 606150005 CHVBK 20210128100537.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s00531-015-1152-8 doi (NATIONALLICENCE)springer-10.1007/s00531-015-1152-8 Carbonate inclusions in Lower Cretaceous picrites from the Hončova hůrka Hill (Czech Republic, Outer Western Carpathians): Evidence for primary magmatic carbonates? [Elektronische Daten] [Kamil Kropáč, Zdeněk Dolníček, David Buriánek, Tomáš Urubek, Vlastimil Mašek] Porphyritic picrites from the Hončova hůrka site in the Silesian Unit (Western Carpathians) are composed mostly of olivine phenocrysts enclosed in a black fine-grained groundmass, which consists of clinopyroxene, biotite, magnetite, chlorite, feldspars, and zeolites. The rocks are variably affected by hydrothermal alteration. The freshest samples contain potentially primary igneous calcite and aragonite, which occur as globular inclusions hosted by olivine phenocrysts, or as fillings of the miarolitic cavities in the picrite groundmass. In this paper, we try to clarify the nature of investigated carbonates using the combination of several petrological methods. Based on the texture, mineral composition, and relationship to the alteration patterns of the host mineral, we distinguished three basic types of inclusions: carbonate inclusions, silicate inclusions, and a combined type consisting of both carbonate and silicate domains. Only the fresh olivine-hosted round carbonate globules can contain the primary igneous calcite. These globules cannot represent immiscible carbonatite melt since they lack Si, alkalis, and other essential components (e.g. P, F, Cl, and S) present in natural carbonate melts. Instead, they can be interpreted as product of equilibrium crystallization of calcite from carbonated silicate melt (i.e. crystal cumulates). In contrast, the calcite-aragonite assemblage in inclusions hosted by altered olivine and in miaroles most probably originated during recrystallization of primary calcite during late-magmatic or post-magmatic stages or is related to the superimposed hydrothermal alteration. Springer-Verlag Berlin Heidelberg, 2015 Magmatic carbonate nationallicence Carbonated silicate melt nationallicence Picrite nationallicence Teschenite association nationallicence Magma evolution nationallicence Outer Western Carpathians nationallicence Kropáč Kamil Department of Geology, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 77146, Olomouc, Czech Republic aut Dolníček Zdeněk Department of Geology, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 77146, Olomouc, Czech Republic aut Buriánek David Czech Geological Survey, Leitnerova 22, 65859, Brno, Czech Republic aut Urubek Tomáš Department of Geology, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 77146, Olomouc, Czech Republic aut Mašek Vlastimil Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacký University Olomouc, Hněvotínská 5, 77900, Olomouc, Czech Republic aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1299-1315 1437-3254 104:5<1299 2015 104 531 https://doi.org/10.1007/s00531-015-1152-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00531-015-1152-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kropáč Kamil Department of Geology, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 77146, Olomouc, Czech Republic aut NATIONALLICENCE 700 1- Dolníček Zdeněk Department of Geology, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 77146, Olomouc, Czech Republic aut NATIONALLICENCE 700 1- Buriánek David Czech Geological Survey, Leitnerova 22, 65859, Brno, Czech Republic aut NATIONALLICENCE 700 1- Urubek Tomáš Department of Geology, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 77146, Olomouc, Czech Republic aut NATIONALLICENCE 700 1- Mašek Vlastimil Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacký University Olomouc, Hněvotínská 5, 77900, Olomouc, Czech Republic aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1299-1315 1437-3254 104:5<1299 2015 104 531