1. Adair, R.N.: Stratigraphy, structure, and geochemistry of the Halfmile Lake massive-sulphide deposit, New Brunswick. J. Explor. Min. Geol. 1, 151–166 (1992)
2. Bakheit, A.K.: Geochemical and tectonic control of sulphide-gold mineralization in Ariab mineral district, Red Sea Hills, Sudan. Ph. D. thesis: Techn. Univ. Berlin, 157p (1991)
3. Campbell, I.H., Lencher, C.M., Coast, P., Franklin, J.M., Gorton, M.P., Thurston, P.C.: Rare earth mobility in alteration pipes below massive sulfide Cu-Zn sulfide deposits. J. Chem. Geol. 45, 181–202 (1984)
4. Cullers, R.L., Medaris, L.G., Haskin, L.A.: Experimental studies of the distribution of rare earth as trace elements among silicate minerals and liquids and water. J. Geochim. Cosmochim. Acta 37, 1499–1512 (1973)
5. Gale, G. H., Fedikow, M. A. F.: The application of rare earth element analyses in the exploration for volcanogenic massive sulphide type deposits in Manitoba; In: Report of Activities, 1999, Manitoba Industry, Trade and Mines, Geological Services, p. 9 (1999)