Found as inclusion in recrystallized zircon grains in a phengite-epidote-chlorite schist in the north-eastern New Caledonia.
Quality of samples:
not specified / average specimens
Spandler, C.; Hermann, J. and Rubatto, R. (2004) : Exsolution of thortveitite, yttrialite, and xenotime during low-temperature recrystallization of zircon from New Caledonia, and their significance for trace element incorporation in zircon. American Mineralogist 89: 1795-1806