• journal_title：American Mineralogist
• Contributor：Evgeny V. Galuskin ; Irina O. Galuskina ; Leonid S. Dubrovinsky ; Janusz Janeczek
• Publisher：Mineralogical Society of America
• Date：2012-
• Format：text/html
• Language：en
• Identifier：10.2138/am.2012.4092
• journal_abbrev：American Mineralogist
• issn：0003-004X
• volume：97
• issue：5-6
• firstpage：1002
• section：Actinides in Geology, Energy, and the Environment

Vorlanite, cubic CaUO₄ heated at temperatures above 750 °C, transforms irreversibly into rhombohedral CaUO₄, proving that the latter crystallized as a precursor of vorlanite in high-temperature skarns. Vorlanite most probably originated due to pseudomorphic transformation of rhombohedral CaUO₄, caused by disordering of cations and uranyl-bonds that resulted from α-decay events of uranium. The ease of the transition from rhombohedral CaUO₄ to vorlanite and the fast reversal transition during heating can be explained by the similarity of both structures. Formation of vorlanite prevents CaUO₄ from undergoing metamictization.