View changes made in:
  • Sep 4, 2023
    • Perrierite-(La)
      • RRUFF Ideal Chemistry changed from "(La,Ce,Ca)4Fe2+(Ti4+,Fe3+)4(Si2O7)2O8" to "(La,Ce3+,Ca)4Fe2+(Ti4+,Fe3+)4(Si2O7)2O8"
  • May 1, 2021
    • Perrierite-(La)
      • RRUFF Ideal Chemistry changed from "(La3+,Ce3+,Ca)4Fe2+(Ti4+,Fe3+)4(Si2O7)2O8" to "(La,Ce,Ca)4Fe2+(Ti4+,Fe3+)4(Si2O7)2O8"
  • Oct 13, 2017
    • Perrierite-(La)
      • IMA Ideal Chemistry changed from "(La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4(Si2O7)2O8" to "(La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4[(Si2O7)O4]2"
  • Aug 2, 2014
    • Perrierite-(La)
      • RRUFF Ideal Chemistry changed from "(La,Ce,Ca)4Fe2+(Ti,Fe3+)4(Si2O7)2O8" to "(La3+,Ce3+,Ca)4Fe2+(Ti4+,Fe3+)4(Si2O7)2O8"
  • Jun 5, 2012
    • Perrierite-(La)
      • RRUFF Ideal Chemistry changed from "(La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4(Si2O7)2O8" to "(La,Ce,Ca)4Fe2+(Ti,Fe3+)4(Si2O7)2O8"
      • Mineral Comment changed from

        Chukanov, N.V., Blab, G., Pekov, I.V., Belakovsky, D.I., Van, K.V., Rastsvetaeva, R.K. and Aksenov, S.M. (2011) Perrierite-(La), IMA 2010-089. CNMNC Newsletter No. 9, August 2011, page 2537; Mineralogical Magazine, 75, 2535-2540

        to

        Chukanov N V, Blass G, Pekov I V, Belakovskiy D I, Van K V, Rastsvetaeva R K, Aksenov S M (2011) Perrierite-(La) (La,Ce,Ca)4Fe2+(Ti,Fe)4(Si2O7)2O8 - a new mineral species from volcanic region Eifel, Germany, Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva 140, 34-44

  • May 30, 2012
  • Apr 7, 2012
  • Sep 12, 2011
    • Perrierite-(La)
      • RRUFF Ideal Chemistry changed from "(La,Ce,Ca)4(Fe,Mn2+,Mg)(Ti,Fe)4Si4O22" to "(La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4(Si2O7)2O8"
      • IMA Ideal Chemistry changed from "La4Fe2+Fe3+2Ti^4+2O8(Si2O7)2" to "(La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4(Si2O7)2O8"
      • Mineral Comment changed to

        Chukanov, N.V., Blab, G., Pekov, I.V., Belakovsky, D.I., Van, K.V., Rastsvetaeva, R.K. and Aksenov, S.M. (2011) Perrierite-(La), IMA 2010-089. CNMNC Newsletter No. 9, August 2011, page 2537; Mineralogical Magazine, 75, 2535-2540

  • Apr 10, 2007
    • Perrierite-(La)
      • IMA Ideal Chemistry changed to "La4Fe2+Fe3+2Ti^4+2O8(Si2O7)2"
  • May 10, 2006
    • Perrierite-(La)
      • RRUFF Ideal Chemistry changed to "(La,Ce,Ca)4(Fe,Mn2+,Mg)(Ti,Fe)4Si4O22"
  • May 4, 2006
    • Perrierite-(La)
      • New Mineral Entry
      • Mineral Display Name changed to "Perrierite-(La)"