Geo-Platinum 87

Invited Papers.- 1. Exploration for Platinum: A Contemporary Viewpoint.- 2. The Platinum Market: Recent History and Future Developments.- Analytical Techniques.- 3. Evaluation of the Nickel Sulphide Bead Method of Fire-assay for the Platinum-Group Elements using Neutron Activation Analysis.- 4. Preconcentration of Precious Metals by Tellurium Sulphide Fire-assay Followed by Instrumental Neutron Activation Analysis.- 5. The Potential of Fire-assay and ICP-MS for the Determination of Platinum-Group Elements in Geological Materials (Abstract).- 6. ICP-AES Determination of Precious Metals in Difficult Materials (Abstract).- 7. New Detection Techniques for Locating Precious Metal Minerals by Beta Autoradiography: Preliminary Results for Rhodium and Silver Grains.- Theoretical and Experimental Studies.- 8. Solubility and Transport of Platinum-Group Elements in Hydro-thermal Solutions: Thermodynamic and Physical Chemical Constraints.- 9. New Mechanisms for the Mobilization of the Platinum-Group Elements in the Supergene Zone.- 10. Spinel Non-stoichiometry as the Explanation for Ni-, Cu- and PGE-enriched Sulphides in Chromitites.- 11. The Potential for Hydrothermal Platinum Deposits (Abstract).- Europe and North Africa.- 12. The Use of Mantle Normalization and Metal Ratios in Discriminating Between the Effects of Partial Melting, Crystal Fractionation and Sulphide Segregation on Platinum-Group Elements, Gold, Nickel and Copper: Examples from Norway.- 13. Noble Metal Geochemistry of Some Ni-Cu Deposits in the Sveco-norwegian and Caledonian Orogens in Norway.- 14. The Significance of Cumulus Chlorapatite and High-temperature Dashkesanite to the Genesis of PGE Mineralization in the Koitelainen and Keivitsa-Satovaara Complexes, Northern Finland (Abstract).- 15. The Shetland Ophiolite: Evidence for a Supra-subduction Zone Origin and Implications for Platinum-Group Element Mineralization (Abstract).- 16. Nickel-Copper and Precious Metal Mineralisation in the Caledonian Mafic and Ultramafic Intrusions of North-East Scotland (Abstract).- 17. Platinum-Group Element Analyses of Serpentinites in the Eastern Central Alps, from Davos (Switzerland) to the Valmalenco (Italy).- 18. Further Data on Platinum-Palladium Minerals from the Ivrea-Verbano Sulphide Deposits (Abstract).- 19. Platinum-Group Elements and Au Distribution in Ni Arsenide-Chromite Veins from the Rifo-Betic Lherzolite Massifs (Morocco-Spain).- 20. PGE Distribution in Some Ultramafic Rocks and Minerals from the Bou-Azzer Ophiolite Complex (Morocco).- North and South America.- 21. Exploration for Platinum-Group Elements in the Labrador Trough, Canada.- 22. Platinum-Group Element Mineralisation and the Relative Importance of Magmatic and Deuteric Processes: Field Evidence from the Lac des Iles Deposit, Ontario, Canada.- 23. Platinum-Group Mineral Precipitation from Fluids in Pegmatitic Gabbro: Two Duck Lake Intrusion, Coldwell Complex, Ontario, Canada (Abstract).- 24. Interelement Correlation, Stratigraphic Variation and Distribution of PGE in the Ultramafic Series of the Bird River Sill, Canada.- 25. Distribution of PGE in Sulphides of the Bay of Islands Ophiolite Complex, Newfoundland (Abstract).- 26. Chemical Evolution of Vapour During Crystallization of the Stillwater Complex (Abstract).- 27. The Distribution of the Platinum-Group Elements in the Palisades Sill, New Jersey and New York (Abstract).- 28. Platinum-Group Element Mineralogy of the Pole Corral Podiform Chromite Deposit, Rattlesnake Creek Terrane, Northern California (Abstract).- 29. PGE in Hawaiian Basalt: Implications of Hydrothermal Alteration on PGE Mobility in Volcanic Fluids (Abstract).- 30. Platinum-Group Minerals in Chromite-rich Horizons of the Niquelandia Complex (Central Goias, Brazil).- Equatorial and South Africa.- 31. Further Studies of the Development of Platinum-Group Minerals in the Laterites of the Freetown Layered Complex, Sierra Leone.- 32. The Geology and Economic Potential of the PGE-rich Main Sul