Browsing ELibrary by Author "Dal Negro A."

Browsing ELibrary by Author "Dal Negro A."

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  • CRYSTAL CHEMISTRY OF CR3+ - V3+-RICH CLINOPYROXENES 
    Secco L.; Martignago F.; Dal Negro A.; Reznitskii L.Z.; Sklyarov E.V. (2002)
    Eleven clinopyroxenes from the Sludyanka Crystalline Complex in Russia belonging to the ternary join crystal diffractometry and electron probe microanalysis. The crystal chemical data show that the T site is almost completely ...
  • HOW CR3+ AND FE3+ AFFECT MG-AL ORDER-DISORDER TRANSFORMATION AT HIGH TEMPERATURE IN NATURAL SPINELS 
    Martignago F.; Dal Negro A.; Carbonin S. (2003)
    Three natural Mg(Al2-yCry)O4 spinels (y 0.07–0.16), highly ordered in terms of Mg–Al, and one Mg(Al2–yFe3+y)O4 spinel (y0.08), highly ordered also in terms of Fe3+, were studied by means of X-ray single-crystal diffraction. ...
  • X-RAY SINGLE-CRYSTAL STUDY OF SPINELS: IN SITU HEATING 
    Carbonin S.; Martignago F.; Menegazzo G.; Dal Negro A. (2002)
     Two MgAl2O4 stoichiometric spinel crystals, one natural and one synthetic, were heated from 25 to 950 °C and studied in situ by single-crystal X-ray diffraction. The natural crystal, quenched from 850 °C, was further ...