Assoc. Prof. Martin Ondrejka, PhD

Position:Associate professor
Phone:+421 2 9014 9296
Publicationslist of publications
Section of Petrology

Scientific interests

  • Rock-fluid interaction processes, stability and alteration of accessory minerals (e.g. monazite, xenotime, apatite, allanite, titanite), post-magmatic to low-T (supergene) remobilization and fractionation of rare lithophile elements (REE, Zr, Hf, Nb, Ta, U, Th, Rb, Be, F, B).
  • Petrology, mineralogy, geochemistry, and geochronology of granitoids and felsic volcanics (esp. A-types=ferroan).
  • Member of awarded excellent scientific mineralogical-petrological team (Putiš, Uher, Ondrejka and Bačík) according to the evaluation by the Accreditation Commission of Slovak Rep. in 2015 and 2018.
  • Reviewer (SCI journals): Mineralogical Magazine, Canadian Mineralogist, Mineralogy and Petrology, Geologica Carpathica
  • Reviewer (SCOPUS journals): Zeitschrift für Geologische Wissenschaften, Bulletin Mineralogie a Petrologie, Acta Geologica Slovaca, Mineralia Slovaca
  • Handling editor: Acta Geologica Slovaca

Pedagogical activities

My teaching activities are mainly focused on petrography and petrology of magmatic rocks and genetic mineralogy.

Bachelor degree:

  • Petrography of Magmatic Rocks
  • Rocks under the microscope
  • Laboratory Methods in Geology
  • Microscopy of Rock-forming Minerals,
  • Field course of mineralogy and petrology

Master’s degree

  • Petrology of Magmatic Rocks
  • Thermodynamics and Phase Equilibria
  • Alteration Processes in Rocks
  • Genetic Mineralogy of Rocks
  • Genetic Mineralogy of Natural Resources
  • Microscopic Petrology

Doctoral degree

  • Magmatic Petrology
  • Genetic Mineralogy
  • Geochemistry of Rocks
  • Isotope Geology and Geochronology

The most significant publications

  • Ondrejka M., Uher P., Pršek J., Ozdín D. (2007) Arsenian monazite-(Ce) and xenotime-(Y), REE arsenates and carbonates from the Tisovec-Rejkovo rhyolite, Western Carpathians, Slovakia: Composition and substitutionsin the (REE,Y)XO4 system (X = P, As, Si, Nb, S). Lithos 95, 1-2, 116-129
  • Uher P., Ondrejka M., Konečný P. (2009) Magmatic and post-magmatic Y-REE-Th phosphate, silicate and Nb-Ta-Y-REE oxide minerals in A-type metagranite: an example from the Turčok massif, the Western Carpathians, Slovakia. Mineralogical Magazine 73, 6, 1009-1025.
  • Pršek J., Ondrejka M., Bačík P., Budzyń B., Uher P. (2010) Metamorphic-hydrothermal REE minerals in the Bacúch magnetite deposit, Western Carpathians, Slovakia: (Sr,S)-rich monazite-(Ce) and Nd-dominant hingganite. Canadian Mineralogist 48, 1, 81-94.
  • Förster H.-J., Ondrejka M., Uher P. (2011) Mineralogical responses to subsolidus alteration of granitic rocks by oxidizing As-bearing fluids: REE arsenates and As-rich silicates from the Zinnwald granite, Eastern Erzgebirge, Germany. Canadian Mineralogist 49, 4, 913-930.
  • Ondrejka M., Uher P., Putiš P., Broska I., Bačík P., Konečný P., Schmiedt I. (2012) Two-stage breakdown of monazite by post-magmatic and metamorphic fluids: An example from the Veporic orthogneiss, Western Carpathians, Slovakia. Lithos 142–143, 245–255.
  • Uher P.,  Ondrejka M., Bačík P., Broska I., Konečný P. 2015: Britholite, monazite, REE carbonates, and calcite: Products of hydrothermal alteration of allanite andapatite in A-type granite from Stupne, Western Carpathians, Slovakia. Lithos 236, 212–225.
  • Ondrejka M., Putiš M., Uher P., Schmiedt I., Pukančík L., Konečný P. 2016 Fluid-driven destabilization of REE-bearing accessoryminerals in the granitic orthogneisses of North Veporic basement (Western Carpathians, Slovakia). Mineralogy and Petrology, 110, 561–580.
  • Ondrejka M., Bačík P., Sobocký T., Uher P., Škoda R., Mikuš T., Luptáková J., Konečný P. 2018: Minerals of the rhabdophane group and the alunite supergroup in microgranite: products of low-temperature alteration in a highly acidic environment from the Velence Hills, Hungary. Mineralogical Magazine, 82, 1277–1300.
  • Ondrejka M., Li, X.-H., Vojtko R., Putiš M., Uher P., Sobocký T. 2018: Permian A-type rhyolites of the Muran Nappe, Inner WesternCarpathians, Slovakia: in-situ zircon U-Pb SIMS ages and tectonic setting. Geologica Carpathica, 69, 187–198.
  • Ondrejka M., Bačík P., Putiš M., Uher P., Mikuš T., Luptáková J., Ferenc Š., Smirnov A. 2020: Carbonate-bearing phosphohedyphane–hydroxylphosphohedyphane and cerussite: Supergene products of galena alteration in Permian aplite (Western Carpathians, Slovakia). Canadian Mineralogist, 58, 347–365.

Current Projects

APVV-19-0065 – member of the research team (2020-2023, principal investigator M. Putiš) „Petrological-geochronological record of riftogenesis and crust-mantle recycling in the Western Carpathians orogenic wedge”

APVV-18-0065 – member of the research team  (2019-2023, principal investigator P. Bačík). Light litophile elements (Li, Be, B) in selected minerals: from crystal structure to geological processes

VEGA 1/0467/20 – principal investigator (2020-2022) Remobilisation and fractionation of rare lithophile elements under hydrothermal and supergene conditions


Slovak Geological Society Price for most important scientific paper between 2007 and 2008, category II. – Scientific papers of young authors under 35. 

Awarded publication: Ondrejka M., Uher P., Pršek J., Ozdín D. 2007: Arsenian monazite-(Ce) and xenotime-(Y), REE arsenates and carbonates from the Tisovec-Rejkovo rhyolite, Western Carpathians, Slovakia: Composition and substitutions in the (REE,Y)XO4 system (X = P, As, Si, Nb, S), Lithos, 95, 1, 116-129.