Geo-platinum 87 / Геоплатина 87

Exploration for Platinum: A Contemporary Viewpoint C.J. MORRISSEY (Riofinex North Ltd, Bristol, UK)
The Platinum Market: Recent History and Future Developments C. R. N. CLARK (Johnson Matthey pIc, London, UK)

Evaluation of the Nickel Sulphide Bead Method of Fire-assay for the Platinum-Group Elements using Neutron Activation Analysis S.J. Parry, I. W. Sinclair & M. Asif {Imperial College Reactor Centre, Ascot, UK)
Preconcentration of Precious Metals by Tellurium Sulphide Fire-assay Followed by Instrumental Neutron Activation Analysis I. Shazali, L. Van’t dack & R. Gijbels {University of Antwerp, Belgium)
The Potential of Fire-assay and ICP-MS for the Determination of Platinum-Group Elements in Geological Materials {Abstract) The late A. R. Date, A. E. Davies & Y. Y. Cheung {British Geological Survey, London, UK)
ICP-AES Determination of Precious Metals in Difficult Materials P. Whitehead {Johnson Matthey Technology Centre, Reading, UK) <...>

New Detection Techniques for Locating Precious Metal Minerals by Beta Autoradiography: Preliminary Results for Rhodium and Silver Grains

P. J. POTTS (The Open University, Milton Keynes, UK)

Theoretical and Experimental Studies 8. Solubility and Transport of Platinum-Group Elements in Hydrothermal

Solutions: Thermodynamic and Physical Chemical Constraints

B. W. MOUNTAIN & S. A. WOOD (McGill University, Montreal, Canada)

New Mechanisms for the Mobilization of the Platinum-Group Elements in the Supergene Zone 

I. R. PUMER (Newcastle University, NSW, Australia) & P. A. Williams (University College, Cardiff, UK)

Spinel Non-stoichiometry as the Explanation for Ni-, Cu- and PGEenriched Sulphides in Chromitites

A. J. NALDRETT & J. LEHMANN (GIS, BRGM-CNRS, Orleans, France)

The Potential for Hydrothermal Platinum Deposits (Abstract) 

J. W. LYDON (Geological Survey of Canada, Ottawa, Canada)

Europe and North Africa

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 

S.-J. BARNES (Universite du Quebec, Canada), R. BOYD, A. KORNEUUSSEN, L.-P. NILSSON, M. OFfEN (Norges Geologiske Unders(jkelse, Trondheim, Norway), R. B. PEDERSEN & B. ROBINS (Geologisk Institutt, Bergen, Norway)

Noble Metal Geochemistry of Some Ni-Cu Deposits in the Sveconorwegian and Caledonian Orogens in Norway 

R. BOYD (Geological Survey of Norway, Trondheim, Norway),S.-J. BARNES (Universite du Quebec, Chicoutimi, Canada) & A. GR0NLlE (Geological Survey of Norway, Trondheim, Norway)

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) 

T. MUTANEN, R. TORNROOS & B. JOHANSON (Geological Survey of Finland, Espoo, Finland)

The Shetland Ophiolite: Evidence for a Supra-subduction Zone Origin and Implications for Platinum-Group Element Mineralization (Abstract) 

H. M. PRICHARD & R. A. LORD (The Open University, Milton Keynes, UK)

Nickel-Copper and Precious Metal Mineralisation in the Caledonian Mafic and Ultramafic Intrusions of North-East Scotland (Abstract)

T. A. FLETCHER (Marischal College, Aberdeen, UK) 

Platinum-Group Element Analyses of Serpentinites in the Eastern Central Alps, from Davos (Switzerland) to the Valmalenco (Italy) 

D. J. M. BURKHARD (University of Heidelberg, Federal Republic of Germany), N. J PAGE (US Geological Survey, Menlo Park, California, USA) & G. C. AMSTUTZ (University of Heidelberg, Federal Republic of Germany)

Further Data on Platinum-Palladium Minerals from the Ivrea-Verbano Sulphide Deposits (Abstract) 

G. GARUTI (Universita di Modena, Italy) & R. RINALDI (Universita di Cagliari, Italy)

Platinum-Group Elements and Au Distribution in Ni ArsenideChromite Veins from the Rifo-Betic Lherzolite Massifs (Morocco-Spain) 

M. LEBLANC (Universite des Sciences et Techniques du Languedoc, Montpellier, France) & F. GERVILLA-LINARES (Universidad de Granada, Spain)

PGE Distribution in Some Ultramafic Rocks and Minerals from the Bou-Azzer Ophiolite Complex (Morocco)

W. FISCHER, J. AMOSSE (Institut Dolomieu, Grenoble, France) & M. LEBLANC (Universite des Sciences et Techniques du Languedoc, Montpellier, France)

Exploration for Platinum-Group Elements in the Labrador Trough, Canada 

F. SCOTT (La Fosse Platinum Group, Don Mills, Canada)

Platinum-Group Element Mineralisation and the Relative Importance of Magmatic and Deuteric Processes: Field Evidence from the Lac des Iles Deposit, Ontario, Canada 

A. J. MACDONALD (Ontario Geological Survey, Toronto, Canada)

Platinum-Group Mineral Precipitation from Fluids in Pegmatitic Gabbro: Two Duck Lake Intrusion, Coldwell Complex, Ontario, Canada (Abstract)

D. H. WATKINSON & R. DAHL (Carleton University, Ottawa, Canada)

Interelement Correlation, Stratigraphic Variation and Distribution of PGE in the Ultramafic Series of the Bird River Sill, Canada

R. F. J. SCOATES, o. R. ECKSTRAND (Geological Survey of Canada, Ottawa, Canada) & L. J. CABRI (Canada Centre for Mineral and Energy Technology, Ottawa, Canada)

Distribution of PGE in Sulphides of the Bay of Islands Ophiolite Complex, Newfoundland (Abstract) 

J. W. LYDON & D. G. RICHARDSON (Geological Survey of Canada, Ottawa, Canada)

Chemical Evolution of Vapour During Crystallization of the Stillwater Complex (Abstract) 

E. A. MATHEZ (American Museum of Natural History, New York, USA), V. J. DIETRICH (Institut fur Mineralogie und Petrographie, Zurich, Switzerland), J. R. HOLLOWAY (Arizona State University,

Tempe, USA) & A. E. BOUDREAU (University of Washington, Seattle, USA)

The Distribution of the Platinum-Group Elements in the Palisades Sill, New Jersey and New York (Abstract) 

R. TALKINGTON (Stockton College, Pomona, New Jersey, USA), D. GOTTFRIED, B. R. LIPIN, N. RAITT (US Geological Survey, Reston, Virginia, USA), J. PUFFER (Rutgers University, Newark, New Jersey, USA) & D. SHIRLEY (University of California, Berkeley, USA)

Platinum-Group Element Mineralogy of the Pole Corral Podiform Chromite Deposit, Rattlesnake Creek Terrane, Northern California  (Abstract) 

B. C. MORING, N. J PAGE & R. L. OSCARSON (US Geological Survey, Menlo Park, California, USA)

PGE in Hawaiian Basalt: Implications of Hydrothermal Alteration on PGE Mobility in Volcanic Fluids (Abstract)

J. H. CROCKET & A. KABIR (McMaster University, Hamilton, Canada)

Platinum-Group Minerals in Chromite-rich Horizons of the Niquelandia Complex (Central Goias, Bnlzil)

A. FERRARIO (Universita di Milano, Italy) & G. GARUTI (Universita di Modena, Italy)

Equatorial and South Africa

Further Studies of the Development of Platinum-Group Minerals in the Laterites of the Freetown Layered Complex, Sierra Leone 

J. F. W. BOWLES (The Open University, Milton Keynes, UK)

The Geology and Economic Potential of the PGE-rich Main Sulphide Zone of the Great Dyke, Zimbabwe 

M. D. PRENDERGAST (Union Carbide Geology Department, Kwekwe, Zimbabwe)

PGE- and Au-distribution in Rift-related Volcanics, Sediments and Stratabound Cui Ag Ores of Middle Proterozoic Age in Central SWA/Namibia

G. BORG, M. TREDOUX, J. P. F. SELLSCHOP, O. F. D. WAYWARD (University of the Witwatersrand, Johannesburg, South Africa) & K. J. MAIDEN (Kaleen, ACT, Australia)

PGE in the 3·5 Ga Jamestown Ophiolite Complex, Barberton Greenstone Belt, with Implications for PGE Distribution in Simatic Lithosphere 

M. J. DE WIT & M. TREDOUX (University of the Witwatersrand, Johannesburg, South Africa)

Evidence for Fluid in the Footwall Beneath Potholes in the Merensky Reef of the Bushveld Complex 

R. G. CAWTHORN & K. L. POULTON (University of the Witwatersrand, Johannesburg, South Africa)

Geochemistry of the Mount Ayliff Intrusion and the Origin of Associated Sulphide Mineralization (Abstract)

R. G. CAWTHORN (University of the Witwatersrand, Johannesburg, South Africa)

The Effects of Metasomatising Fluids on the PGE-content of the UG-1 Chromitite Layer (Abstract) 

R. K. W. MERKLE (University of Pretoria, South Africa) Far East

Platinum-Group Element Mineralization in the Ultramafic Sequence of the Acoje Ophiolite Block, Zambales, Philippines

B. ORBERGER, G. FRIEDRICH & E. WOERMANN (RWTH Aachen, Federal Republic of Germany)

Platinum-Group Element Abundance in Chromite Deposits of the Acoje Ophiolite Block, Zambales Ophiolite Complex, Philippines (Abstract)

G. C. BACUTA JR, the late A. K. GIBBS, R. W. KAY (Cornell University, Ithaca, New York, USA) & B. R. LIPIN (US Geological Survey, Reston, Virginia, USA)

Platinum-Group Minerals in Ophiolitic Chromitites and Alluvial Placer Deposits, Meratus-Bobaris Area, Southeast Kalimantan

K.-P. BURGATH (Bundesanstalt fur Geowissenschaften und Rohstoffe, Hannover, Federal Republic of Germany)

Platinum-Group Minerals in the Tiebaghi (New-Caledonia) and Vourinos (Greece) Ophiolites (Abstract) 

T. AUGE (GIS, BRGM-CNRS, Orleans, France)

Other Geochemical Studies

Platinum-Group Element Chemistry in Relation to the Behaviour of Individual PGEs in Primary and Secondary Geological Processes

L. HAYNES (Nature Conservancy Council, Peterborough, UK)

Gold and Iridium in Sulphides from Submarine Basalt Glasses (Abstract) 

C. L. PEACH (University of Washington, Seattle, Washington, USA) & E. A. MATHEZ (American Museum of Natural History, New York, USA)

PGE and other Trace Element Geochemistry at some Distinct Phanerozoic Stratigraphic Horizons (Abstract) 

M. TREDOUX, M. J. DE WIT, R. J. HART, N. M. LINDSAY & J. P. F. SELLSCHOP (University of the Witwatersrand, Johannesburg, South Africa)