Brannerite (ideally UTi2O6) contains up to 56% UO2 and 4% ThO2. The mineral (Lumpkin et al., 2012; Zhang et al., 2013) is characterized by an amorphization of its crystal structure due to radiation damage, and it represents an interesting challenge to mineralogists and material scientists. The mechanisms of brannerite metamictization and thermally induced recrystallization are of interest for the studies related to the problems of the spent nuclear waste storage.