Copper belongs to those metals whose concentrations in nature arise from a broad diversity of endogeneous and exogeneous pro­ cesses, which applies to essentially all genetic classes of ore deposits. This is the first proceedings volume on copper metallogeny to cover the worldwide distribution of the four main groups of cop­ per deposits, including in Part I: copper-nickel deposits with cobalt and platinum group elements; Part II: copper-molybde­ num-gold deposits with silver, zinc, and lead; Part III/IV: copper­ zinc-lead deposits (with silver etc.). On the occasion of the 27th International Geological Congress in Moscow, USSR, a symposium on copper metallogeny was held, dealing with metallogenesis and mineral deposits. The symposium was organized and sponsored by three international societies en­ gaged in the field of ore deposits: The Society of Economic Geol­ ogy (SEG), the Society of Geology Applied to Mineral Deposits (SGA) and the International Association on the Genesis of Ore Deposits (IAGOD). Invited papers were presented in four ses­ sions: (1) Copper deposits in mafic and ultramafic complexes, (2) Porphyry copper deposits, (3) Copper deposits of volcanic-hydro­ thermal association, and (4) Sediment-hosted copper deposits. The sessions were chaired by A. D. Genkin, A. J. Naldrett, J. D. Ridge and G. I. Gorbunov; V.1. Sotnikov, A. Soregaroli, R. H. Sillitoe and V. A. Evstrakhin; F. M. Vokes, A.1. Krivtsov, M. Solomon and N. I. Eremin; G. H. Friedrich, Yu. V. Bogdanov, A.C. Brown and F.P. Krendelev.

I Deposits in Mafic and Ultramafic Complexes.- The Physical and Petrologie Setting and Textural and Compositional Characteristics of Sulfides from the South Kawishiwi Intrusion, Duluth Complex, Minnesota, USA.- Application of Stable Isotopic Studies to Problems of Magmatic Sulfide Ore Genesis with Special Reference to the Duluth Complex, Minnesota.- Controls on the Formation of Komatiite-Associated Nickel-Copper Sulfide Deposits.- Depositional Environments of Volcanic Peridotite-Associated Nickel Sulphide Deposits with Special Reference to the Kambalda Dome.- Geochemistry of the Sudbury Igneous Complex: A Model for the Complex and Its Ores.- Sulfide Petrology and Genesis of Copper-Nickel Ore Deposits.- Types and Distinctive Features of Ore-Bearing Formations of Copper-Nickel Deposits.- On the Role of Metamorphism in the Formation of Nickel-Copper Sulfide Deposits in the Kola Peninsula.- The Gabbro-Wehrlite Association in the Eastern Part of the Baltic Shield.- Peridotitic Komatiites and the Origin of Ores (Southeastern Part of the Baltic Shield).- Geologic Setting of Selected Chromium and Nickel Deposits of China.- II Porphyry Deposits.- Recent Advances in Porphyry Base Metal Deposit Research.- The Geochemical Behaviour of Copper and Molybdenum in Ore-Forming Processes.- Batholith-Volcano Coupling in the Metallogeny of Porphyry Copper Deposits.- Space-Time Distribution, Crustal Setting and Cu/Mo Ratios of Central Andean Porphyry Copper Deposits: Metallogenic Implications.- Metallogenic Zoning of Volcano-Plutonic Belts and Porphyry-Copper Mineralization.- Geological and Structural Conditions of Localization of the High-Grade Ores of Porphyry Copper Deposits.- Elements Determining in the Geological-Structural Model of the Erdenetuin-Obo Copper-Molybdenum Ore Field, Mongolia.- Genetic Aspects of the Recsk Mineralized Complex, Hungary.- Ore-Magmatic Systems of Copper-Molybdenum Deposits.- III Deposits of Volcanic-Hydrothermal Association.- Base Metal Deposits in the Iberian Pyrite Belt.- Copper-Pyrite and Pyrite Base Metal Deposits of the Caucasian Region.- The Hidden Mineralogical and Geochemical Zoning and the Ore-Forming Conditions of Copper and Copper- Lead-Zinc Massive Sulfide Deposits.- Zoning of Massive Sulphide Deposits and their Origin.- Physico-Chemical Conditions of Base Metal Sulphide Ore Formation.- On the Genesis of Barite Associated with Volcanogenic Massive Sulfides, Fukazawa Mine, Hokuroku District, Japan.- IV Sediment-Hosted Deposits.- Diagenetic Features at White Pine (Michigan), Redstone (N. W. Territories, Canada) and Kamoto (Zaire). Sequence of Mineralization in Sediment-Hosted Copper Deposits (Part 1).- Diagenetic Sulphide Mineralization Within the Stratiform Copper-Cobalt Deposit of West Kambove (Shaba- Zaire). Sequence of Mineralization in Sediment-Hosted Copper Deposits (Part 2).- Geochemical Aspects of Stratiform and Red-Bed Copper Deposits in the Catskill Formation (Pennsylvania, USA) and Redstone Area (Canada). Sequence of Mineralization in Sediment-Hosted Copper Deposits (Part 3).- Stratabound Copper Deposits in East South-Central Alaska: Their Characteristics and Origin.- Major Element Geochemistry of the Host Rocks in Some Sediment-Hosted Copper Deposits.- Zechstein Copper-Bearing Shales in Poland. Lagoonal Environments and the Sapropel Model of Genesis.- Formation Conditions of Copper Sandstone and Copper-Shale Deposits.- Major Types of Copper-Bearing Zones in the Soviet Union.- Red-Colored Terrigenous Sediments - Specific Copper- Forming Systems.- Cupriferous Sandstones and Shales of the SiberianPlatform.- Genetic Types of Copper Mineralization in the Igarka Area, West of the Siberian Platform.- The Diverse Styles of Sediment-Hosted Copper Deposits in Australia.- Mineral Zoning in Sediment-Hosted Copper-Iron Sulfide Deposits - A Quantitative Kinetic Approach.- Results of Recent Exploration for Copper-Silver Deposits in the Kupferschiefer of West Germany.