View changes made in:
  • Oct 1, 2018
    • Ursilite
      • Mineral Comment changed from

        Chernikov A A, Krumetskaia O V, Sidel'nikova V D (1957) Ursilite - a new silicate of uranium, Atomnaya Energiya Voprosy Geologii Urana, Supplement 6, 61-65

        to

        Chernikov A A, Krumetskaia O V, Sidel'nikova V D (1957) Ursilite - a new silicate of uranium, Atomnaya Energiya Voprosy Geologii Urana, Supplement 6, 61-65

        Discredited as an obsolete redundancy given calcioursilite and magnesioursilite:
        Hålenius U, Hatert F, Pasero M, Mills S J (2018) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 43. New minerals and nomenclature modifications approved in 2018. Mineralogical Magazine 82, 779-785

  • Oct 13, 2017
    • Ursilite
      • IMA Ideal Chemistry changed from "Mg4(UO2)4(Si2O5)5.5(OH)5·13H2O" to "Mg4(UO2)2(Si2O5)5.5(OH)5·13H2O"
  • Sep 4, 2017
    • Ursilite
      • RRUFF Ideal Chemistry changed from "Mg4(UO2)4(Si2O5)5.5(OH)5·13H2O" to "Mg4(U6+O2)4(Si2O5)5.5(OH)5·13H2O"
  • Jul 13, 2013
    • Ursilite
      • RRUFF Ideal Chemistry changed from "(Mg,Ca)4(UO2)4(Si2O5)5.5(OH)5•13H2O" to "Mg4(UO2)4(Si2O5)5.5(OH)5·13H2O"
      • IMA Ideal Chemistry changed from "Mg4(UO2)4(Si2O5)5.5(OH)5•13H2O" to "Mg4(UO2)4(Si2O5)5.5(OH)5·13H2O"
      • Mineral Comment changed from

        Fleischer M (1959) New mineral names, American Mineralogist 44, 464-470

        It appears that Ca-ursilite was not distinct from haiweeite, and we surmise that Mg-ursilite on close inspection is only a Mg bearing haiweeite.
        Glossary of Mineral Synonyms (de Fourrestier)

        to

        Chernikov A A, Krumetskaia O V, Sidel'nikova V D (1957) Ursilite - a new silicate of uranium, Atomnaya Energiya Voprosy Geologii Urana, Supplement 6, 61-65

  • Apr 16, 2007
    • Ursilite
      • IMA Ideal Chemistry changed to "Mg4(UO2)4(Si2O5)5.5(OH)5•13H2O"
  • Apr 2, 2007
  • Mar 8, 2007
  • Mar 6, 2007
    • Ursilite
      • New Mineral Entry
      • Mineral Display Name changed to "Ursilite"
      • RRUFF Ideal Chemistry changed to "(Mg,Ca)4(UO2)4(Si2O5)5.5(OH)5•13H2O"