Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic Indicators
The Ozren ophiolite complex (OOC) of the Dinaridic Ophiolite Belt is one of the six ophiolite complexes in Bosnia and Herzegovina. This paper deals with the mineral chemistry of amphiboles determined by electron probe micro-analysis and micro-Raman spectroscopy. The detected amphibole generations an...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-02-01
|
| Series: | Minerals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-163X/14/3/239 |
| _version_ | 1797239956833304576 |
|---|---|
| author | Samir Ustalić Ondrej Nemec Stanislava Milovská Marián Putiš Elvir Babajić Sergii Kurylo Peter Ružička |
| author_facet | Samir Ustalić Ondrej Nemec Stanislava Milovská Marián Putiš Elvir Babajić Sergii Kurylo Peter Ružička |
| author_sort | Samir Ustalić |
| collection | DOAJ |
| description | The Ozren ophiolite complex (OOC) of the Dinaridic Ophiolite Belt is one of the six ophiolite complexes in Bosnia and Herzegovina. This paper deals with the mineral chemistry of amphiboles determined by electron probe micro-analysis and micro-Raman spectroscopy. The detected amphibole generations and types in mafic, ultramafic, and metamorphic rocks suggest a polystage evolution and are therefore useful petrogenetic indicators of the investigated OOC. Most gabbroic rocks and dolerites contain primary magmatic amphibole1 (magnesio-hornblende to pargasite, occasionally hastingsite) and prismatic to needle-like aggregates of late magmatic amphibole2 (magnesio-hornblende), while plagiogranite contains ferri-winchite and ferro-ferri-winchite as primary magmatic amphibole. Post-magmatic amphiboles were detected in dolerites, troctolites, and lesser in peridotites. The Na-(Ti)-rich amphibole3 (ferri-winchite and ferro-ferri-winchite to katophorite and ferri-katophorite) with amphibole4 (grunerite) rim formed along the grain boundaries of clinopyroxene, amphibole1, and plagioclase in dolerites. A part of these amphiboles grows into amphibole1, 2. Kaersutite to ferri-kaersutite, associated with phlogopite, occur in troctolites and dunites, while Mhbl was detected in harzburgite. The ultramafic rocks (lherzolites, harzburgites, and dunites) and the gabbroic layer are crosscut by clinopyroxene–plagioclase gabbroic and clinopyroxene–plagioclase–amphibole gabbro–dolerite dykes, suggesting ‘dry’ and ‘hydrated’ percolating melts generated in inferred subridge and supra-subduction settings, respectively. The amphibole3 and 4 in gabbros and dolerites and similar amphibole types in ultramafic rocks could be related to inferred arc-type basaltic and plagiogranitic percolating melts and fluids. Low-Al amphibole5 (tremolite and actinolite) and associated chlorite, albite, and clinozoisite represent the ocean-floor alterations in mafic rocks. Amphibole6 (magnesio-hornblende to pargasite) was identified in metamorphic sole amphibolites. Micro-Raman spectroscopy provided typical Raman spectra for the studied amphiboles, highlighting distinct features such as bands related to <sup>C</sup>Mg content, <sup>C</sup>Fe<sup>3+</sup> presence, TO<sub>4</sub> ring-breathing mode, TiO<sub>6</sub> stretching mode, presence > 0.3 <i>apfu</i> of <sup>C</sup>Ti, and TO<sub>4</sub> stretching indicating <sup>C</sup>Fe<sup>2+</sup> in the structure. Applied amphibole geothermobarometry revealed the formation P–T conditions of amphibole (Amp)1 (avg. 863 °C at 0.23 GPa), Amp2 (avg. 747 °C at 0.17 GPa), Amp in the mantle rocks (avg. 853 °C at 0.64 GPa), Amp5 (avg. 349 °C at 0.03 GPa), and Amp6 (avg. 694 °C at 0.46 GPa). |
| first_indexed | 2024-04-24T17:59:47Z |
| format | Article |
| id | doaj.art-c9469afe83574704a234fb4e4ae44dd0 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-04-24T17:59:47Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-c9469afe83574704a234fb4e4ae44dd02024-03-27T13:56:11ZengMDPI AGMinerals2075-163X2024-02-0114323910.3390/min14030239Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic IndicatorsSamir Ustalić0Ondrej Nemec1Stanislava Milovská2Marián Putiš3Elvir Babajić4Sergii Kurylo5Peter Ružička6Department of Mineralogy, Petrology and Economic Geology, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, SlovakiaDepartment of Mineralogy, Petrology and Economic Geology, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, SlovakiaEarth Science Institute of the Slovak Academy of Sciences, Ďumbierska 1, 974 11 Banská Bystrica, SlovakiaDepartment of Mineralogy, Petrology and Economic Geology, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, SlovakiaDepartment of Mineralogy and Petrology, Faculty of Mining, Geology and Civil Engineering, University of Tuzla, Urfeta Vejzagića 2, 75 000 Tuzla, Bosnia and HerzegovinaEarth Science Institute of the Slovak Academy of Sciences, Ďumbierska 1, 974 11 Banská Bystrica, SlovakiaDepartment of Mineralogy, Petrology and Economic Geology, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 842 15 Bratislava, SlovakiaThe Ozren ophiolite complex (OOC) of the Dinaridic Ophiolite Belt is one of the six ophiolite complexes in Bosnia and Herzegovina. This paper deals with the mineral chemistry of amphiboles determined by electron probe micro-analysis and micro-Raman spectroscopy. The detected amphibole generations and types in mafic, ultramafic, and metamorphic rocks suggest a polystage evolution and are therefore useful petrogenetic indicators of the investigated OOC. Most gabbroic rocks and dolerites contain primary magmatic amphibole1 (magnesio-hornblende to pargasite, occasionally hastingsite) and prismatic to needle-like aggregates of late magmatic amphibole2 (magnesio-hornblende), while plagiogranite contains ferri-winchite and ferro-ferri-winchite as primary magmatic amphibole. Post-magmatic amphiboles were detected in dolerites, troctolites, and lesser in peridotites. The Na-(Ti)-rich amphibole3 (ferri-winchite and ferro-ferri-winchite to katophorite and ferri-katophorite) with amphibole4 (grunerite) rim formed along the grain boundaries of clinopyroxene, amphibole1, and plagioclase in dolerites. A part of these amphiboles grows into amphibole1, 2. Kaersutite to ferri-kaersutite, associated with phlogopite, occur in troctolites and dunites, while Mhbl was detected in harzburgite. The ultramafic rocks (lherzolites, harzburgites, and dunites) and the gabbroic layer are crosscut by clinopyroxene–plagioclase gabbroic and clinopyroxene–plagioclase–amphibole gabbro–dolerite dykes, suggesting ‘dry’ and ‘hydrated’ percolating melts generated in inferred subridge and supra-subduction settings, respectively. The amphibole3 and 4 in gabbros and dolerites and similar amphibole types in ultramafic rocks could be related to inferred arc-type basaltic and plagiogranitic percolating melts and fluids. Low-Al amphibole5 (tremolite and actinolite) and associated chlorite, albite, and clinozoisite represent the ocean-floor alterations in mafic rocks. Amphibole6 (magnesio-hornblende to pargasite) was identified in metamorphic sole amphibolites. Micro-Raman spectroscopy provided typical Raman spectra for the studied amphiboles, highlighting distinct features such as bands related to <sup>C</sup>Mg content, <sup>C</sup>Fe<sup>3+</sup> presence, TO<sub>4</sub> ring-breathing mode, TiO<sub>6</sub> stretching mode, presence > 0.3 <i>apfu</i> of <sup>C</sup>Ti, and TO<sub>4</sub> stretching indicating <sup>C</sup>Fe<sup>2+</sup> in the structure. Applied amphibole geothermobarometry revealed the formation P–T conditions of amphibole (Amp)1 (avg. 863 °C at 0.23 GPa), Amp2 (avg. 747 °C at 0.17 GPa), Amp in the mantle rocks (avg. 853 °C at 0.64 GPa), Amp5 (avg. 349 °C at 0.03 GPa), and Amp6 (avg. 694 °C at 0.46 GPa).https://www.mdpi.com/2075-163X/14/3/239amphibolesmineral chemistrymicro-Raman spectroscopyamphibole geothermobarometryOzren ophiolitesBosnia and Herzegovina |
| spellingShingle | Samir Ustalić Ondrej Nemec Stanislava Milovská Marián Putiš Elvir Babajić Sergii Kurylo Peter Ružička Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic Indicators Minerals amphiboles mineral chemistry micro-Raman spectroscopy amphibole geothermobarometry Ozren ophiolites Bosnia and Herzegovina |
| title | Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic Indicators |
| title_full | Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic Indicators |
| title_fullStr | Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic Indicators |
| title_full_unstemmed | Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic Indicators |
| title_short | Amphibole Group Minerals in the Ozren Massif Ophiolites of Bosnia and Herzegovina as Petrogenetic Indicators |
| title_sort | amphibole group minerals in the ozren massif ophiolites of bosnia and herzegovina as petrogenetic indicators |
| topic | amphiboles mineral chemistry micro-Raman spectroscopy amphibole geothermobarometry Ozren ophiolites Bosnia and Herzegovina |
| url | https://www.mdpi.com/2075-163X/14/3/239 |
| work_keys_str_mv | AT samirustalic amphibolegroupmineralsintheozrenmassifophiolitesofbosniaandherzegovinaaspetrogeneticindicators AT ondrejnemec amphibolegroupmineralsintheozrenmassifophiolitesofbosniaandherzegovinaaspetrogeneticindicators AT stanislavamilovska amphibolegroupmineralsintheozrenmassifophiolitesofbosniaandherzegovinaaspetrogeneticindicators AT marianputis amphibolegroupmineralsintheozrenmassifophiolitesofbosniaandherzegovinaaspetrogeneticindicators AT elvirbabajic amphibolegroupmineralsintheozrenmassifophiolitesofbosniaandherzegovinaaspetrogeneticindicators AT sergiikurylo amphibolegroupmineralsintheozrenmassifophiolitesofbosniaandherzegovinaaspetrogeneticindicators AT peterruzicka amphibolegroupmineralsintheozrenmassifophiolitesofbosniaandherzegovinaaspetrogeneticindicators |