Bačík P., Fridrichová J., 2021: Cation partitioning among crystallographic sites based on bond-length constraints in tourmaline-supergroup minerals. American Mineralogist, 106, 851-861

Bačík P., Miyawaki R., Atencio D., Cámara F., Fridrichová J., 2017: Nomenclature of gadolinite supergroup. European Journal of Mineralogy, 29, 1067-1082

Bačík P., Cempírek J., Uher P., Ozdín D., Filip J., Novák M., Škoda R., Breiter K., Klementová M., Ďuďa R., Groat L., 2013: Oxy-schorl, Na(Fe2+2Al)Al6Si6O18(BO3)3(OH)3O, a new mineral species from Zlatá Idka, Slovak Republic: Description and crystal structure. American Mineralogist, 98, 485-492.

Bačík P., Uher P., Ertl A., Jonsson E., Nysten P., Kanický V. & Vaculovič T., 2012: Zoned REE-enriched dravite from a granitic pegmatite in Forshammar, Bergslagen province, Sweden: An EMPA, XRD and LA-ICP-MS study. Canadian Mineralogist, 50, 825-841.

Bačík P., Ozdín D., Miglierini B., Kardošová P., Pentrák M. & Haloda J., 2011: Crystallochemical effects of heat treatment on Fe-dominant tourmalines from Dolní Bory (Czech Republic) and Vlachovo (Slovakia). Physics and Chemistry of Minerals, 38, 599-611.

Bačík P.,Fridrichová J., Uher P.,Vaculovič T.,Bizovská V.,Škoda R.,Dekan J.,Miglierini M.,Malíčková I., 2021: Beryl crystal chemistry and trace elements: Indicators of pegmatite development and fractionation (Damara Belt, Namibia). Lithos, 404-405, 106441

Bačík P., Fridrichová J., 2021: Cation partitioning among crystallographic sites based on bond-length constraints in tourmaline-supergroup minerals. American Mineralogist, 106, 851-861

Bačík P., Ozdín D., Uher P., Chovan M., 2022: Crystal chemistry and evolution of tourmaline in tourmaline-rich rocks from Zlatá Idka, Slovakia. Journal of Geosciences, 67, 209–222

Bačík P., Kardošová P., Fridrichová J., Rybnikova O., Škoda R., 2024: Crystal-chemical effects of heat treatment on Cr- and V-bearing Ca-dominant green tourmalines (fluor-uvite, magnesio-lucchesiite). Periodico di Mineralogia, 93, 147-164

Bačík, P., Wildner, M., Cempírek, J., Škoda, R., Cibula, P., & Vaculovič, T. (2023). The position of vanadium in the crystal structure of zoisite, variety tanzanite: Structural refinement, optical absorption spectroscopy and bond-valence calculations. Mineralogical Magazine, 87(4), 599-610.

Bačík P., Méres Š. & Uher P., 2011: Vanadium-bearing tourmaline in metacherts from Chvojnica, Slovak Republic: Crystal chemistry and multistage evolution. Canadian Mineralogist, 49, 1, 195-206.

In: [o1] 2011 van Hinsberg, V.J. - Henry, D.J. - Marschall, H.R.: Canadian Mineralogist, Vol. 49, No. 1, 2011, s. 1-16 - SCI ; SCOPUS

Bačík P., Ozdín D., Miglierini M., Kardošová P., Pentrák M., Haloda J. 2011: Crystallochemical effects of heat treatment on Fe-dominant tourmalines from Dolni Bory(Czech Republic) and Vlachovo (Slovakia). Physics and Chemistry of Minerals, 38, 599-611.

In: [o1] 2012 Ertl, A. - Kolitsch, U. - Dyar, M.D. - Hughes, J.M. - Rossman, G.R. - Pieczka, A. - Henry, D.J. - Pezzotta, F. - Prowatke, S. - Lengauer, C.L. - Korner, W. - Brandstatter, F. - Francis, C.A. - Prem, M. - Tillmanns, E.: AmericanMineralogist, Vol. 97, No. 8-9, 2012, s. 1402-1416 - SCI ; SCOPUS

Bačík P., Uher P., Ertl A., Jonsson E., Nysten P., Kanický V. & Vaculovič T., 2012: Zoned REE-enriched dravite from a granitic pegmatite in Forshammar, Bergslagen province, Sweden: An EMPA, XRD and LA-ICP-MS study. Canadian Mineralogist, 50, 825-841.

In: [o1] 2014 Hawthorne, F.C. - Reznitskii, L. - Clark, C.M. - Grice, J.D.c, - Skogby, H. - Halenius, U. - Bosi, F.: American Mineralogist, Vol. 99, No. 8-9, 2014, s. 1767-1773 - SCI ; SCOPUS

Bačík P., Cempírek J., Uher P., Ozdín D., Filip J., Novák M., Škoda R., Breiter K., Klementová M., Ďuďa R., Groat L., 2013: Oxy-schorl, Na(Fe2+2Al)Al6Si6O18(BO3)3(OH)3O, a new mineral species from Zlatá Idka, Slovak Republic: Description and crystal structure. American Mineralogist, 98, 485-492.

In: [o1] 2018 Bosi, F.: American Mineralogist, Vol. 103, No. 2, 2018, s. 298-306 - SCOPUS

Bačík P., Ertl A., Števko M., Sečkár P., Giester G., 2015: Acicular zoned tourmaline (magnesio-foitite to foitite) from a quartz vein near Tisovec, Slovakia: The relationship between crystal chemistry and acicular habitus. Canadian Mineralalogist, 53, 221-234.

In: [o1] 2016 Dutrow, B.L. - Henry, D.J.: Canadian Mineralogist, Vol. 54, No. 1, 2016, s. 311-335 - SCOPUS

APVV-18-0065 (2019-2023 - principal investigator) Light litophile elements (Li, Be, B) in selected minerals: from crystal structure to geological processes.

The project included mineralogical and crystal-chemical studies of minerals that contain light cations from the second period of the periodic system - lithium, beryllium and boron in their structure. Research was focused on two areas and two types of minerals will be examined. The first area of research focused on crystal-chemical patterns down to the subatomic level using state-of-the-art analytical methods. The second area was focused on the behaviour of these elements in the mineral and rock environment. Firstly, minerals containing Be, B and Li directly in their crystal-chemical formula (these elements are dominant at least at one structural site) were studied. These included silicates (tourmaline supergroup, gadolinite supergroup, beryl and cordierite, Li mica, spodumen, bertrandite, phenakite), borates (whole class), phosphates (herderite) and oxides (chrysoberyl). However, we focused also on the minerals in which Be, B and Li substitute for the other cations, but are not dominant. In this context, the distribution of studied elements in various minerals in variable rock environments was studied.

VEGA 1/0137/20 (2020-2023 - principal investigator) Experimental study of physico-chemical properties of selected minerals (oxides, phosphates and silicates).

The experimental mineralogical approach is suitable for the detailed crystal-chemical study of properties and processes within the crystal structure and its stability, but also for the precious stones treatment within the gemmology. Some of these experiments are not sufficiently described, and the colour-changing mechanisms are similarly not clearly known, as well as the processes leading to the mineral structure breakdown. The crystal-chemical properties of selected minerals (oxides, phosphates and silicates) were studied by thermal, thermal-pressure and radiation experiments, especially the oxidation or reduction of cations, the formation or disappearance of colour centres and structural defects. The mineral decomposition processes and new phase formation were also studied under experimental conditions.

VEGA-1/0151/19 (2019-2021, investigator; principal investigator Prof. Dr. Marián Putiš) Petrology and geochronology of crustal and mantle dyke systems in Cretaceous accretionary wedge of the Western Carpathians and eastern Austroalpine margin”.

Cretaceous accretionary wedges of the Western Carpathians and the Austro-Alpine unit of the eastern Alps contains dykes of the crustal and mantle rocks. These rocks are significant indicator of Permian-Triassic or Jurassic-Cretaceous extension and the opening of the Neotethys and Atlantic Tethys respectively. They are of the key importance for the reconstruction of palaeotectonic and geodynamic evolution of the Carpathians and Alps. The mineral rock composition (EPMA, LA-ICP-MS) and their whole-rock chemistry (ICP-MS) will be used for definition of their palaeotectonic origin. The isotopic study (Rb/Sr, Lu/Hf, Sm/Nd. U/Pb) of the rocks and minerals, and their isotopic dating (U-Pb SIMS, nano-SIMS, LA-MC-ICP-MS, K-Ar) will enhance creation of geodynamic evolution model of mentioned accretionary complexes. Their occasional economic potential can be estimated. We will utilize possibilities of our broad international co-operation particularly in isotope geochronology.

09I03-03-V04-00060 TheoCrystMin (2024-2026, vedúci projektu) The main goal of the project is to create a robust theoretical basis for the description of structural properties and crystal-chemical properties and processes in minerals. Minerals, unlike synthetic materials, are almost always solid solutions of two or more end-member compositions. Theoretical mineralogical study is based on several different approaches, but in mineral crystallography, the most promising is a combination of structural and bond topology and bond-valence theory. This approach enables the prediction and analysis of bonding properties in different mineral structures and the determination of the substitution effects on the local structure as well as over a longer distance. Moreover, in conjunction with other approaches, such as ligand field theory, it could improve the interpretation and prediction of spectroscopic properties of minerals. Therefore, a wide range of analytical methods will be applied to verify theoretical predictions. The research will focus in detail on specific problems in various oxide minerals (silicates, oxides, phosphates), but also on the development of functional theory and software in general. The results of the project would have wide applications from basic mineralogy to applications such as gemmology, material physics and technologies based on the use of minerals.

VEGA 1/0189/23 (2023-2025, principal investigator) "Experimental mineralogical study of crystal-chemical changes, structural stability and breakdown products of selected oxides, phosphates and silicates induced by high temperature, radiation and biosphere"

Experimental research of minerals is suitable for a detailed crystal-chemical study of properties and processes within the structure and its stability, but also for the modification of the gemstone properties in gemmology. The aim of this project is a detailed crystal-chemical description of experiments, the mechanism causing the colour change, or the processes leading to the decomposition of the mineral structure. Crystal-chemical processes in selected minerals (oxides, phosphates and silicates) will be studied using thermal, radiation and biomineralogical experiments. In the experimental biomineralogical research of the REE phosphates and silicates stability, their interaction with the biosphere, i.e., fungi, will be studied. Standard mineralogical methods will be used for the study, especially electron microanalysis, X-ray diffraction analysis, HRTEM, LA-ICP-MS, but also a wide range of spectroscopic methods such as infrared absorption, Raman, optical absorption and Mössbauer spectroscopy.