Rietveld studies of leucite analogs

A M T Bell, C M B Henderson, R J Cernik

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    Structures were detd. by the Rietveld method for synthetic analogs of the natural mineral leucite (KAlSi2O6) studied by high-resoln. synchrotron x-ray powder diffractometry. MAS-NMR and electron diffraction were also used to provide structural information. The samples were prepd. by heating a mixt. of appropriate amts. of high-purity amorphous alkali metal carbonate and divalent metal oxide in a Pt crucible and then quenching in liq. N to form a glass. The powd. glass was heated in air at ambient pressure for dry synthesis and was heated under pressure with water in a hydrothermal synthesis. The crystal structure of dry synthesized Cs2CuSi5O12 is Ia3d cubic. Hydrothermally synthesized Rb2MgSi5O12, Rb2CdSi5O12, and Cs2MnSi5O12 analogs have the Cs2CdSi5O12 Pbca structure. Hydrothermally synthesized Cs2CuSi5O12, Cs2ZnSi5O12, and Cs2MgSi5O12 have a previously unknown P42/ncm structure. [on SciFinder(R)]
    Original languageEnglish
    Pages (from-to)765-770
    Number of pages6
    JournalMater. Sci. Forum
    Issue numberPt. 2, European Powder Diffraction: EPDIC IV, Pt. 2
    Publication statusPublished - 1996


    • Crystal structure (of synthetic leucite analogs)
    • crystal structure leucite synthetic analog
    • alkali zinc copper silicate crystal structure
    • magnesium manganese alkali silicate crystal structure


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