The amount of criteria in the current search has forced the use of a temporary URL. This link should not be saved or shared as part of long-term use.

IMA database

Search TermDefinition
itemSearches for datafields containing the word "item".
"item"Searches for datafields containing only the word "item" and nothing else.
!itemSearches for datafields that does not contain "item".
!"item"Searches for datafields that contain anything other than just the word "item".
""Searches for datafields that contain nothing. (empty)
!""Searches for datafields that contain anything at all. (not empty)
","
"!"		Searches for datafields that contain a comma character or an exclamation point character.
abc xyz
abc && xyz		Searches for datafields containing both "abc" and "xyz".
"abc xyz"Searches for datafields containing the phrase "abc xyz".
abc, xyz
abc OR xyz
abc || xyz		Searches for datafields containing either "abc", or "xyz", or both.
>123Searches for datafields containing a number greater than 123.
>=123Searches for datafields containing a number greater than or equal to 123.
<123Searches for datafields containing a number less than 123.
<=123Searches for datafields containing a number less than or equal to 123.
>123 <456Searches for datafields containing a number between 123 and 456.
  Search Ancestor:

    Polyhalite
    Plhl
    K2Ca2Mg(SO4)4(H2O)2
    K2Ca2Mg(S6+O4)4(H2O)2
    K Ca Mg S6+ O H
    Stromeyer F (1817) Ein neu entdecktes Metall und Analyse eines neuen Minerals. Journal für Chemie und Physik 21, 297-306  [view file]
    Chemical formula changed from K2Ca2Mg(SO4)4·2H2O to K2Ca2Mg(SO4)4(H2O)2:
    Pasero M (2025) The New IMA List of Minerals - A Work in Progress - Updated: November 2025. International Mineralogical Association 2025-11  [view file]
    Sowerby J (1817) Polyhalite. in Exotic Mineralogy or, Coloured Figures of Foreign Minerals as a Supplement to British Mineralogy, Volume 2, Arding and Merrett (London) 101-102  [view file]
    Xu H, Guo X, Bai J (2017) Thermal behavior of polyhalite: A high-temperature synchrotron XRD study. Physics and Chemistry of Minerals 44, 125-135  [view file]
      HOM File
     
      File was made public on 2024-08-05
      Uploaded 2024-08-05 by Nate Stone
      66.4 Kb
    polyhalite.pdf
    Bindi L (2005) Reinvestigation of polyhalite, K2Ca2Mg(SO4)4·2H2O. Acta Crystallographica E61, i135-i136
    Cheng H, Chen Y, Zhang S (2026) New insights into the thermodynamic properties and Raman vibrational modes of polyhalite from density functional theory. Molecules 31, 1269 ; https://doi.org/10.3390/molecules31081269  [view file]
    Lane M D (2007) Mid-infrared emission spectroscopy of sulfate and sulfate-bearing minerals. American Mineralogist 92, 1-18  [view file]
    Pasero M (2025) The New IMA List of Minerals - A Work in Progress - Updated: November 2025. International Mineralogical Association 2025-11  [view file]
    Schaller W T, Henderson E P (1932) Mineralogy of drill cores from the potash field of New Mexico and Texas. U.S. Geological Survey Bulletin 833, 1-124  [view file]
    Schlatti M, Sahl K, Zemann A, Zemann J (1970) Die Kristallstruktur des Polyhalits, K2Ca2Mg(SO4)4(H2O)2. Tschermaks Mineralogische und Petrographische Mitteilungen 14, 75-86
    Sowerby J (1817) Polyhalite. in Exotic Mineralogy or, Coloured Figures of Foreign Minerals as a Supplement to British Mineralogy, Volume 2, Arding and Merrett (London) 101-102  [view file]
    Stromeyer F (1817) Ein neu entdecktes Metall und Analyse eines neuen Minerals. Journal für Chemie und Physik 21, 297-306  [view file]
    Stromeyer F (1820) Mineralogisch-chemische Untersuchungen über ein neues fossiles Salz. Journal für Chemie und Physik 29, 389-410  [view file]
    Stromeyer H (1819) Chemische Untersuchung der natürlichen Boraxsäure, des Eisenpecherzes, des Picro-Pharmacoliths und des Polyhalits, eines neuen fossilen-Salzes. Annalen der Physik 61, 177-189  [view file]
    Xu H, Guo X, Bai J (2017) Thermal behavior of polyhalite: A high-temperature synchrotron XRD study. Physics and Chemistry of Minerals 44, 125-135  [view file]