Marine Minerals

Summary Reports.- Report of the working group on placer minerals.- Report of the working group on marine phosphorites.- Report of the working group on manganese nodules and crusts.- Report of the working group on marine sulfides.- Contributed Papers.- Placers.- Sedimentary models to estimate the heavy-mineral potential of shelf sediments.- Exploring the offshore area of N.E. Greece for placer deposits.- Marine placers: Reconnaissance exploration technology.- The development of techniques for marine geological surveys.- Phosphorites.- Model of Tertiary phosphorites on the world's continental margins.- Open-ocean phosphorites: In a class by themselves?.- Some mineral resources of the West African continental shelves related to Holocene shorelines: Phosphorite (Gabon, Congo), glauconite (Congo) and ilmenite (Senegal, Mauritania).- Exploration and genesis of submarine phosphorite deposits from the Chatham Rise, New Zealand: A review.- Manganese nodules and crusts.- Controls on the nature and distribution of manganese nodules in the western Equatorial Pacific Ocean.- Growth history and variability of manganese nodules of the Equatorial North Pacific.- Chemistry and growth history of central Pacific Mn-crusts and their economic importance.- Geochemical methods in manganese nodule exploration.- Analysis and metallurgy of manganese nodules and crusts.- Nodule exploration: Accomplishments, needs and problems.- Deep-ocean near-bottom surveying techniques.- Metalliferous sulfides.- Seafloor polymetallic sulfides: Scientific curiosities or mines of the future?.- Sulfide deposits of the seafloor: Geological models and resource perspectives based on studies in ophiolite sequences.- Recent hydrothermal metal accumulation, products, and conditions of formation.- The chemistry of submarine ore-forming solutions.- Trace element and precious metal concentrations in East Pacific Rise, Cyprus and Red Sea submarine sulfide deposits.- Possibility of mineral enrichment in the Black Sea.- Seafloor volcanism and polymetallic sulfide deposits in ancient active margins: The case of the Iberian pyrite belt.- Scientific rationale for establishing long-term ocean bottom observatory/laboratory systems.- Electrical methods in the exploration of seafloor mineral deposits.- Resource assessment and geostatistics.- Sources of confusion: What are marine mineral resources?.- Thoughts on appraising marine mineral resources.- Estimation of the probability of occurrence of polymetallic massive sulfide deposits on the ocean floor.- Resource assessments, geological deposit models and offshore minerals with an example of heavy-mineral sands.- Aspects of marine placer minerals: Economic potential of coastal deposits in Italy, testing procedures and market conditions.- Geostatistical problems in marine placer exploration.- Geostatistical reserve modeling and mining simulation of the Atlantis II Deepl's metalliferous sediments.- An investigation of the applicability of trend surface analysis to marine exploration geochemistry.- List of Participants of the NATO Advanced Research Workshop on Marine Minerals: Resource Assessment Strategies.