[1]
C. Maijer, P. A. M. Andriessen, E. H. Hebeda, J. B. H. Jansen, and R.H. Verschure, “Osumilite, an approximately 970 Ma old high-temperature index mineral of the granulite-facies metamorphism in Rogaland, SW Norway”, njg, pp. 267-272, Jan. 1981.