View changes made in:
  • Apr 17, 2021
    • Olmsteadite
      • RRUFF Ideal Chemistry changed from "KFe2+2Nb5+O2(P5+O4)2·2H2O" to "KFe2+2Nb5+O2(PO4)2·2H2O"
  • May 23, 2017
    • Olmsteadite
      • RRUFF Ideal Chemistry changed from "KFe2+2NbO2(PO4)2·2H2O" to "KFe2+2Nb5+O2(P5+O4)2·2H2O"
      • Mineral Comment changed from

        Moore P B, Araki T, Kampf A R, Steele I M (1976) Olmsteadite, K2Fe2+2[Fe2+2(Nb,Ta)5+2O4(H2O)4(PO4)4], a new species, its crystal structure and relation to vauxite and montgomeryite, American Mineralogist 61, 5-11

        to

        Moore P B, Araki T, Kampf A R, Steele I M (1976) Olmsteadite, K2Fe2+2[Fe2+2(Nb,Ta)5+2O4(H2O)4(PO4)4], a new species, its crystal structure and relation to vauxite and montgomeryite, American Mineralogist 61, 5-11

  • May 26, 2007
    • Olmsteadite
      • RRUFF Ideal Chemistry changed from "KFe2+2(Nb,Ta)O2(PO4)2·2H2O" to "KFe2+2NbO2(PO4)2·2H2O"
  • Apr 10, 2007
    • Olmsteadite
      • IMA Ideal Chemistry changed from "KFe2+2(Nb,Ta)O2(PO4)2·2H2O" to "KFe2+2NbO2(PO4)2·2H2O"
  • Apr 22, 2006
    • Olmsteadite
      • IMA Ideal Chemistry changed to "KFe2+2(Nb,Ta)O2(PO4)2·2H2O"