Affiliation: | 1. CSIRO Division of Mineralogy, P.O. Box 136, North Ryde, N.S.W. 2113, Australia;2. School of Chemistry, Macquarie University, North Ryde, N.S.W. 2113, Australia;3. CSIRO Division of Fossil Fuels. P.O. Box 136, North Ryde, N.S.W. 2113, Australia |