Institution: | 1. Bureau of Mineral Resources , P.O. Box 378, Canberra City, A.C.T., 2601;2. Bureau of Mineral Resources , Canberra;3. Department of Geology , University of Adelaide ,;4. Research School of Earth Sciences , Australian National University ,;5. 22 Eucumbene Drive, Duffy, A.C.T.;6. Department of Geology , University of Melbourne , |