- 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 to
- 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
- 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)"
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