View changes made in:
  • Jul 27, 2023
  • May 10, 2021
    • Piemontite
      • RRUFF Ideal Chemistry changed from "Ca2Mn3+Al2(Si2O7)(SiO4)O(OH)" to "Ca2(Al2Mn3+)(Si2O7)(SiO4)O(OH)"
  • Oct 13, 2017
    • Piemontite
      • IMA Ideal Chemistry changed from "Ca2Mn3+Al2(Si2O7)(SiO4)O(OH)" to "Ca2(Al2Mn3+)[Si2O7][SiO4]O(OH)"
  • Oct 21, 2008
    • Piemontite
      • Mineral Comment changed from

        Kenngott G A (1853) Piemontit, Das Mohs’sche Mineralsystem (Wien) 75

        to

        Kenngott A (1853) Piemontit, in Das Mohs’sche Mineralsystem, (Wien) 74-75

  • Oct 15, 2008
    • Piemontite
      • Mineral Comment changed to

        Kenngott G A (1853) Piemontit, Das Mohs’sche Mineralsystem (Wien) 75

  • Mar 24, 2008
    • Piemontite
      • RRUFF Ideal Chemistry changed from "Ca2(Al2Mn3+)[Si2O7][SiO4]O(OH)" to "Ca2Mn3+Al2(Si2O7)(SiO4)O(OH)"
      • IMA Ideal Chemistry changed from "Ca2(Al2Mn3+)[Si2O7][SiO4]O(OH)" to "Ca2Mn3+Al2(Si2O7)(SiO4)O(OH)"
  • Dec 14, 2006
    • Piemontite
      • RRUFF Ideal Chemistry changed from "(Ca,Pb,Ce)2(Mn3+,Fe3+)Al2(Si2O7)(SiO4)(O,OH)2" to "Ca2(Al2Mn3+)[Si2O7][SiO4]O(OH)"
      • IMA Ideal Chemistry changed from "(Ca,Pb,Ce)2(Mn3+,Fe3+)Al2(Si2O7)(SiO4)(O,OH)2" to "Ca2(Al2Mn3+)[Si2O7][SiO4]O(OH)"
  • May 10, 2006
    • Piemontite
      • IMA Ideal Chemistry changed to "(Ca,Pb,Ce)2(Mn3+,Fe3+)Al2(Si2O7)(SiO4)(O,OH)2"