1. T. Mikuš, J. Vlasáč, J. Majzlan, J. Kopecký Plášil, J. Sejkora, M. Števko, V. Petříček & E. Makovicky
    New minerals auropolybasite, [Ag15AuSb2S11] and auropearceite, [Ag15AuAs2S11], and the implications for the formation of bonanza ores in epithermal systems
    American Mineralogist 111(2) (2026) 289-302.
  2. J. Kopecký Plášil, G. Steciuk, R. Škoda, S. Philippo & M. Guennou
    Extending the mineralogy of U6+ (III.): Pendevilleite-(Y), a new uranyl carbonate mineral from Kamoto-East Open-Cut, Democratic Republic of Congo
    Mineralogical Magazine 90 (2026) 150-163.
  3. J. Kopecký Plášil, N. Steciuk, G. Steciuk, J. Sejkora, M. Jarošová, J. Rohlíček, S. Philippo, I. Němec & A. Matthies
    Extending the mineralogy of U6+ (IV.): Uranyl phosphate sheet of novel topology in the crystal structure of ranunculite
    Mineralogical Magazine 90 (2026) 164-175.
  4. J. Sejkora, J. Kopecký Plášil, E. Makovicky, P. Škácha, Z. Dolníček & R. Gramblička
    Argentopearceite, Ag16As2S11, a new silver mineral from the Mikulov and Moldava deposits (Czech Republic)
    Mineralogical Magazine 90 (2026) 21-32.
  5. J. Kopecký Plášil, E. Makovicky, V. Petříček & P. Škácha
    Dervillite from Jáchymov, Czech Republic: a non-harmonic approach to the refinement of atomic displacement parameters of silver
    Mineralogical Magazine 89 (2025) 257-265.
  6. W. Hornfeck
    Chiral spiral cyclic twins. III. Twins galore
    Structural Chemistry 36 (2025) 2007-2019.
  7. J. Kopecký Plášil, G. Steciuk, R. Škoda, J. Sejkora, Z. Dolníček, N. Meisser, S. Ansermet & C. Slotta
    Extending the mineralogy of U6+ (II.): Barronite, a new uranyl silicate related to weeksite from Menzenschwand, Germany
    Mineralogical Magazine 89 (2025) 638-649.
  8. A.R. Kampf, T.A. Olds, J. Kopecký Plášil, C. Ma, A.J. Celestian & J. Marty
    Svornostite-(NH4), (NH4)2Mg(UO2)2(SO4)4(H2O)8, a new mineral from the Blue Lizard mine, San Juan County, Utah, USA, and the establishment of the svorno...
    Mineralogical Magazine 89 (2025) 609-617.
  9. J. Kopecký Plášil, G. Steciuk, J. Sejkora, A.R. Kampf, P. Uher, M. Ondrejka, R. Škoda, Z. Dolníček, S. Philippo, M. Guennou, N. Meisser, J. Rohlíček & F. Mees
    Extending the mineralogy of U6+ (I.): Crystal structure of lepersonnite-(Gd) and a description of the new mineral lepersonnite-(Nd)
    Mineralogical Magazine 89 (2025) 549-565.
  10. V.V. Gurzhiy, A.V. Kasatkin, J. Kopecký Plášil
    Uramphite, (NH4)(UO2)(PO4)·3H2O, from the second world occurrence, Beshtau uranium eposit, Northern Caucasus, Russia: Crystal-structure refinement, infrared spectroscopy, and relation to uramarsite
    American Mineralogist 110 (2025) 319-327.
  11. A.V. Kasatkin, J. Kopecký Plášil, F.D. Sandalov, F. Nestola, R. Škoda, V.V. Gurzhiy, A.A. Agakhanov & S.Y. Stepanov
    Brusnitsynite, Mn3CuPbAs3Sb2S12, a First As-dominant Member of the Lillianite-andorite Homologous Series from the Vorontsovskoe Au Deposit, Nothern Urals, Russia
    Zapiski rossijskogo mineralogičeskogo obščestva 6 (2025) 40-58.
  12. A.R. Kampf, J. Kopecký Plášil, T.A. Olds, C. Emproto, C. Ma, J. Sejkora, P.M. Adams & J. Marty
    Hubbardite, a new magnesium uranyl-sulfate mineral closely related to zippeite
    Journal of Geosciences 70 (2025) 151-161.
  13. J. Kopecký Plášil, R. Škoda, A.R. Kampf, I. Nemec, N. Meisser & G. Favreau
    Crystal structure of synthetic “magnesiorietveldite”, Raman spectroscopy data and bond-valence approach to the svornostite group of minerals
    Journal of Geosciences 70 (2025) 163-176.
  14. G. Steciuk, J. Majzlan, J. Rohlíček, R. Škoda, J. Kopecký Plášil
    Znucalite, the only known zinc uranyl carbonate: Its crystal structure and environmental implications
    American Mineralogist 109 (2024) 949-959.
  15. T.A. Olds, J. Kopecký Plášil, A.R. Kampf, P.C. Burns, J. Marty & J.S. McCloy
    Bobfinchite, Na[(UO2)8O3(OH)11]·10H2O, a new Na-bearing member of the schoepite family
    American Mineralogist 109 (2024) 1266-1274.
  16. Y. Zhang, T.A. Ablott, M.K. Nicholas, J. Kopecký Plášil
    Capturing ammonium nitrate in a synthetic uranium oxide hydrate phase: revealing the role of ammonium ions and anion inclusions
    Dalton Transactions 53 (2024) 11112-11119.
  17. J. Majzlan, D. Ozdín, J. Sejkora, G. Steciuk, J. Kopecký Plášil, C. Rößler & C. Matthes
    Zipserite, a new bismuth chalcogenide Bi5(S,Se)4 from Nagybörzsöny in Hungary with a modulated R– 3m(00γ)00 structure
    Mineralogical Magazine 88 (2024) 482-492.
  18. J. Kopecký Plášil, J. Sejkora, Z. Dolníček, V. Petříček, J. Désor, J. Majzlan, M. Gross, G. Möhn & C. Schürmann
    Theuerdankite, Ag3AsO4, a new mineral from the Alter Theuerdank Mine (St. Andreasberg), Germany
    Mineralogical Magazine 88 (2024) 557-564.
  19. R. Pažout, M. Dušek, J. Sejkora, J. Kopecký Plášil, G. Ilinca & Z. Dolníček
    Lazerckerite, Ag3.75Pb4.5(Sb7.75Bi4)S24, from Kutná Hora, Czech Republic: a new Sb–Bi member of the andorite branch of the lillianite homologous series
    European Journal of Mineralogy 36 (2024) 641-656.
  20. J. Sejkora, J. Kopecký Plášil, Z. Dolníček, J. Ulmanová & R. Škoda
    Škáchaite, CaCo(CO3)2, a new member of the dolomite group, from the Brod deposit near Příbram, Czech Republic
    Mineralogical Magazine 88 (2024) 255-261.
  21. J. Kopecký Plášil
    Chenowethite, rare Mg-uranyl -sulphate, from the Jáchymov ore district, Krušné hory Mountains (Czech Republic) - description and Raman spectroscopy
    Bulletin Mineralogie Petrologie 32(1) (2024) 37-44.
  22. J. Sejkora, J. Kopecký Plášil
    Neustädtelite group minerals from Jáchymov in the Krušné hory Mts. (Czech Republic)
    Bulletin Mineralogie Petrologie 321) (2024) 54-60.
  23. A.R. Kampf, T.A. Olds, J. Kopecký Plášil, B.P. Nash & J. Marty
    Libbyite, (NH4)2(Na2□)[(UO2)2(SO4)3(H2O)]2·7H2O, a new mineral with uranyl-sulfate sheets from the Blue Lizard mine, San Juan County, Utah, ...
    Mineralogical Magazine 87 (2023) 767-772.
  24. T.A. Olds, A.J. Lussier, V. Petříček, J. Kopecký Plášil, A.R. Kampf, A.G. Oliver, P.C. Burns, M. Dembowski & I.M. Steele
    Shinkolobweitite, from the Shinkolobwe Mine, Democratic Republic of Congo: A New Mineral Containig Uranium in the Rare Pentavalent Oxidation State
    The Canadian Journal of Mineralogy and Petrology 61 (2023) 999-1020.
  25. W. Hornfeck
    Chiral spiral cyclic twins. II. A two-parameter family of cyclic twins composed of discrete circle involute spirals
    Acta Crystallographica Section A 79 (2023) 570-586.
  26. T. Mikuš, J. Vlasáč, J. Majzlan, J. Sejkora, G. Steciuk, J. Kopecký Plášil, C. Rossler & C. Matthes
    Argentotetrahedrite-(Cd), Ag6(Cu4Cd2)Sb4S13, a new member of the tetrahedrite group from Rudno nad Hronom, Slovakia
    Mineralogical Magazine 87(2) (2023) 262-270.
  27. A.V. Kasatkin, F. Nestola, J. Kopecký Plášil, J. Sejkora, A. Vymazalová & R. Škoda
    Tolstykhite, Au3S4Te6, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia
    Mineralogical Magazine 87 (2023) 34-39.
  28. J. Kopecký Plášil, A.R. Kampf, C. Ma & J. Desor
    Oldsite, K2Fe2+[(UO2)(SO4)2]2(H2O)8, a new uranyl sulfate mineral from Utah, USA: its description and implications for the formation and occurrences of uranyl sul...
    Mineralogical Magazine 87 (2023) 151-159.
  29. J. Majzlan, M. Števko, J. Kopecký Plášil, J. Sejkora & E. Dachs
    Thermodynamics of the Cu, Zn, and Cu–Zn phases: zincolivenite, adamite, olivenite, ludjibaite, strashimirite, and slavkovite
    Journal of Geosciences 68 (2023) 67-80.
  30. J. Majzlan, A. Plumhoff, M. Števko, G. Steciuk, J. Kopecký Plášil, E. Dachs & A. Benisek
    Thermodynamic and structural variations along the olivenite–libethenite solid solution
    European Journal of Mineralogy 35 (2023) 157-169.
  31. A.R. Kampf, J. Kopecký Plášil, T.A. Olds, C. Ma & J. Marty
    Shinarumpite, a new cobalt uranyl sulfate mineral from the Scenic mine, San Juan County, Utah, USA, structurally related to leydetite
    Mineralogical Magazine 87 (2023) 348-355.
  32. M. Števko, T. Mikuš, J. Sejkora, J. Kopecký Plášil, E. Makovicky, J. Vlasáč & A. Kasatkin
    Argentopolybasite, Ag16Sb2S11, a new member of the polybasite group
    Mineralogical Magazine 87 (2023) 382-395.
  33. U. Kolitsch, J. Sejkora, D. Topa, A.R. Kampf, J. Kopecký Plášil, B. Rieck & K.H. Fabritz
    Prachařite, CaSb5+2(As3+2O5)2O2·10H2O, a new mineral from Lavrion, Greece
    MINERALOGY AND PETROLOGY 117 (2023) 269-280.
  34. J. Sejkora, J. Kopecký Plášil
    Ammoniozippeite from the Jáchymov ore district, Krušné hory Mountains (Czech Republic) - description and Raman spectroscopy
    Bulletin Mineralogie Petrologie 31(1) (2023) 1-9.
  35. K.T. Lu, Y. Zhang, T. Wei, T.A. Ablott, J. Kopecký Plášil, I. Karatchevtseva & R. Zheng
    Investigation of uranium oxide hydrates with barium(II) ions: structural diversity, uranium valences and implications
    New Journal of Chemistry 47 (2023) 13286-13296.
  36. R. Pažout, J. Kopecký Plášil, M. Dušek, J. Sejkora & Z. Dolníček
    Holubite, Ag3Pb6(Sb8Bi3)Σ11S24, from Kutná Hora, Czech Republic, a new member of the andorite branch of the lillianite homologous series
    Mineralogical Magazine 87 (2023) 582–590-582–590.
  37. D.A. Banaru, W. Hornfeck, S.M. Aksenov & A.M. Banaru
    On the origin of the combinatorial complexity of the crystal structures with 0D, 1D, or 2D primary motifs
    CrystEngComm 25 (2023) 2144-2158.
  38. W. Hornfeck
    Chiral spiral cyclic twins
    Acta Crystallographica Section A 78 (2022) 21-35.
  39. G. Steciuk, R. Škoda, J. Kopecký Plášil
    Chemical variability in vyacheslavite, U(PO4)(OH): Crystal-chemical implications for hydrous and hydroxylated U4+, Ca, and REE phosphates
    American Mineralogist 107 (2022) 131-137.
  40. J. Kopecký Plášil, R. Škoda & K. Fatková
    Crystallization of Uranyl Silicate Natroboltwoodite during an Experimental Dissolution of the Mineral Yttrialite-(Y): Crystal Structure and Raman Spectroscopy
    Crystal Growth & Design 22 (2022) 1202-1211.
  41. N.D. Tolstykh, M. Tuhý, A. Vymazalová, F. Laufek, J. Kopecký Plášil, F. Košek
    Gachingite, Au(Te1-xSex) 0.2≈x≤0.5, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia
    Mineralogical Magazine 86(2) (2022) 205-213.
  42. J. Sejkora, J. Kopecký Plášil, E. Makovicky
    Stibioústalečite, Cu6Cu6(Sb2Te2)Se13, the first Te–Se member of tetrahedrite group, from the Ústaleč, Czech Republic
    Journal of Geosciences 67 (2022) 275-283.
  43. A.V. Kasatkin, G.S. Anisimova, F. Nestola, J. Kopecký Plášil, J. Sejkora, R. Škoda, E.P. Sokolov, L.A. Kondratieva & V.N. Kardashevskaia
    Amgaite, Tl3+2Te6+O6, a New Mineral from the Khokhoyskoe Gold Deposit, Eastern Siberia, Russia
    Minerals 12 (2022) 1064(1)-1064(11).
  44. A.R. Kampf, J. Kopecký Plášil, T.A. Olds, Chi Ma & J. Marty
    Scenicite, a new uranyl-sulfate mineral from the White Canyon district, San Juan County, Utah, USA
    Mineralogical Magazine 86 (2022) 743-748.
  45. A. Vymazalová, M.D. Welch, F. Laufek, V.V. Kozlov, C.J. Stanley, J. Kopecký Plášil
    Sluzhenikinite, Pd15(Sb7-xSnx) 3 ≤ x ≤ 4, a new platinum group mineral (PGM) from the Oktyabrsk deposit, the Norilsk deposits, Russia
    Mineralogical Magazine 86(4) (2022) 577-585.
  46. G. Steciuk, U. Kolitsch, V. Goliáš, R. Škoda, J. Kopecký Plášil, F.X. Schmidt
    Uranotungstite, the only natural uranyl tungstate: Crystal structure revealed from 3D electron diffraction
    American Mineralogist 107 (2022) 1709-1716.
  47. A.V. Kasatkin, J. Kopecký Plášil, E. Makovicky, R. Škoda, A.A. Agakhanov, M.V. Tsyganko
    Pokhodyashinite, CuTlSb2(Sb1-xTlx)AsS7-x, a new thallium sulfosalt from the Vorontsovskoe gold deposit, Northern Urals, Russia
    Journal of Geosciences 67 (2022) 41-51.
  48. A.R. Kampf, J. Kopecký Plášil, R. Škoda & J. Čejka
    Michalskiite, Cu2+Mg3Fe3+3.33(VO4)6, an Mg analogue of lyonsite, from the Ronneburg uranium deposit, Thuringia, Germany
    Journal of Geosciences 67 (2022) 33-40.
  49. A.V. Kasatkin, J. Kopecký Plášil, E. Makovicky, N.V. Chukanov, R. Škoda, A.A. Agakhanov, M.V. Tsyganko
    Gungerite, TlAs5Sb4S13, a new thallium sulfosalt with a complex structure containing covalent As-As bonds
    American Mineralogist 107 (2022) 1164-1173.
  50. A.R. Kampf, T.A. Olds, J. Kopecký Plášil, B.P. Nash & J. Marty
    Nitscheite, (NH4)2[(UO2)2(SO4)3(H2O)2]·3H2O, a new mineral with an unusual uranyl-sulfate sheet
    American Mineralogist 107 (2022) 1174-1180.