View changes made in:
  • Sep 28, 2019
    • Alpersite
      • Mineral Comment changed from

        Peterson R C, Hammarstrom J M, Seal R R (2006) Alpersite (Mg,Cu)SO4·7H2O, a new mineral of the melanterite group, and cuprian pentahydrite: Their occurrence within mine waste, American Mineralogist 91, 261-269

        to

        Peterson R C, Hammarstrom J M, Seal R R (2006) Alpersite (Mg,Cu)SO4·7H2O, a new mineral of the melanterite group, and cuprian pentahydrite: Their occurrence within mine waste, American Mineralogist 91, 261-269

        Chemical formula changed from (Mg,Cu)SO4·7H2O:
        Miyawaki R, Hatert F, Pasero M, Mills S J (2019) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 50. New minerals and nomenclature modifications approved in 2019. Mineralogical Magazine 83, 615-620

  • Sep 16, 2019
    • Alpersite
      • RRUFF Ideal Chemistry changed from "(Mg,Cu2+)S6+O4·7H2O" to "MgS6+O4·7H2O"
      • IMA Ideal Chemistry changed from "(Mg,Cu)(SO4)·7H2O" to "Mg(SO4)·7H2O"
  • Oct 13, 2017
    • Alpersite
      • IMA Ideal Chemistry changed from "(Mg,Cu2+)SO4·7H2O" to "(Mg,Cu)(SO4)·7H2O"
  • Feb 23, 2015
    • Alpersite
      • RRUFF Ideal Chemistry changed from "(Mg,Cu2+)SO4·7H2O" to "(Mg,Cu2+)S6+O4·7H2O"
  • Jun 19, 2012
    • Alpersite
      • Mineral Comment changed from

        Peterson R C, Hammarstrom J M, Seal R R (2006) Alpersite (Mg,Cu)SO4·7H2O, a new mineral of the melanterite group, and cuprian pentahydrite: Their occurrence within mine waste, American Mineralogist 91, 261-269

        to

        Peterson R C, Hammarstrom J M, Seal R R (2006) Alpersite (Mg,Cu)SO4·7H2O, a new mineral of the melanterite group, and cuprian pentahydrite: Their occurrence within mine waste, American Mineralogist 91, 261-269

  • Feb 16, 2008
    • Alpersite
      • RRUFF Ideal Chemistry changed from "(Mg,Cu)SO4·7H2O" to "(Mg,Cu2+)SO4·7H2O"
      • IMA Ideal Chemistry changed from "(Mg,Cu)SO4·7H2O" to "(Mg,Cu2+)SO4·7H2O"
  • Apr 1, 2007
  • Jun 30, 2006
    • Alpersite
      • New Mineral Entry
      • Mineral Display Name changed to "Alpersite"
      • RRUFF Ideal Chemistry changed to "(Mg,Cu)SO4·7H2O"
      • IMA Ideal Chemistry changed to "(Mg,Cu)SO4·7H2O"