Radvanec M. & Uher P., 2016: Platinum-group minerals in metapyroxenite from Jasov, Meliatic Unit, Slovakia. Acta Geologica Slovaca, 8, 2, 195–201.
Platinum-group minerals in metapyroxenite from Jasov, Meliatic Unit, Slovakia
Martin Radvanec1 & Pavel Uher2
1State Geological Institute of Dionýz Štúr, Mlynská dolina 1, 817 04 Bratislava, Slovakia; martin.radvanec@geology.sk
2Department of Mineralogy and Petrology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia; puher@fns.uniba.sk
Abstract
The platinum-group minerals (PGM) occur in Triassic-Jurassic metapyroxenite from allochtonous serpentinite body near Jasov village, Meliatic Unit, Inner Western Carpathians, eastern Slovakia. The PGM assemblage originated during two genetic stages. The primary magmatic stage 1, formed under very low fO2; it comprises older generation of PGM: laurite (RuS2), erlichmanite? (OsS2), sperrylite (PtAs2), iridium, and osmium. The younger generation of PGM formed during post-magmatic, hydrothermal-metamorphic stage 2, including irarsite [(Ir,Rh)AsS], hollingworthite [(Rh,Ir)AsS], possibly part of sperrylite (PtAs2), temagamite (Pd3HgTe3), vasilite-like mineral [Pd2(S,Te)], and unnamed phases of (Ir,Os)As3, (Pd,Ni)3Sb, and Pd6Ni3Sb2 (?) stoichiometry. Minerals of the magmatic stage were derived from the deep mantle source under highly reductive conditions, and the primary rock was probably transported by a plume to shallower upper mantle depth. The hydrothermal-metamorphic stage originated by partial hydratation and serpentinization of the metapyroxenite under the blueschists facies metamorphism. The Jasov metapyroxenite represents the first reported occurrence of PGM in the Western Carpathians.
Key words: platinum-group minerals, awaruite, metapyroxenite, serpentinization, Western Carpathians, Meliatic Unit
Manuskript doručený: 2016-07-01
Manuskript revidovaný: 2016-11-04
Informácie
Pripravované články
AGEOS 2023, roč. 15, č. 2
- Lačný A., Lánczos T., Hók J., Józsa Š., Rybárik M., Blaškovič B. & Pachinger P.: Geology, morphology, and speleothems of the Jaskyňa Dezidera Horváta Cave (Western Carpathians)
- Krčmář D., Hodasová K., Ondrejková I. & Fľaková R.: The thermal footprint of urbanization: Linking high-density basement structures to groundwater heat contamination
- Hodasová K., Krčmář D., Zatlakovič M. & Ondrejková I.: Drought hazard assessment using GIS techniques in the Banská Bystrica region
- Aubrecht R.: Palaeokarst clefts and their filling at the type locality of the Honce Limestone (Turňa Unit): Petrographic analysis and its preliminary interpretation
- Pivko D.: The boom-and-bust cycles of the Spiš travertine extraction during nine centuries (northeastern Slovakia)
Archív
- AGEOS 2023, roč. 15, č. 1
- AGEOS 2022, roč. 14, č. 2
- AGEOS 2022, roč. 14, č. 1
- AGEOS 2021, roč. 13, č. 2
- AGEOS 2021, roč. 13, č. 1
- AGEOS 2020, roč. 12, č. 2
- AGEOS 2020, roč. 12, č. 1
- AGEOS 2019, roč. 11, č. 2
- AGEOS 2019, roč. 11, č. 1
- AGEOS 2018, roč. 10, č. 2
- AGEOS 2018, roč. 10, č. 1
- AGEOS 2017, roč. 9, č. 2
- AGEOS 2017, roč. 9, č. 1
- AGEOS 2016, roč. 8, č. 2
- AGEOS 2016, roč. 8, č. 1
- AGEOS 2015, roč. 7, č. 2
- AGEOS 2015, roč. 7, č. 1
- AGEOS 2014, roč. 6, č. 2
- AGEOS 2014, roč. 6, č. 1
- AGEOS 2013, roč. 5, č. 2
- AGEOS 2013, roč. 5, č. 1
- AGEOS 2012, monografia
- AGEOS 2012, roč. 4, č. 2
- AGEOS 2012, roč. 4, č. 1
- AGEOS 2011, roč. 3, č. 2
- AGEOS 2011, roč. 3, č. 1
- AGEOS 2010, roč. 2, č. 2
- AGEOS 2010, roč. 2, č. 1
- AGEOS 2009, roč. 1, č. 2
- AGEOS 2009, roč. 1, č. 1
- AGEOS 2009, monografia