Proceedings of the Ninth Quadrennial IAGOD Symposium held in Beijing, China, August 12-18, 1994
The International Association on the Genesis of Ore Deposits (IAGOD) has produced an outstanding series of eight proceedings volumes from their quadrennial meetings held in various countries around the world. The IAGOD proceedings volumes are the most important quadrennial international volumes on ore deposits. This ninth proceedings volume contains 49 full-size papers selected from 900 papers submitted for the 9th IAGOD Symposium held in Beijing, China. More than 300 geoscientists from 42 countries and regions attended that very successful quadrennial IAGOD meeting. Because the meeting was held in Beijing, the volume contains more papers on Chinese ore deposits than any previous IAGOD volume. Those papers contain significant amounts of important imformation that previously was confidential or unavailable for those ore deposits. Many of the deposits discussed for China, Russia, and elsewhere in the world are superlarge world-class deposits. The 9th IAGOD volume contains papers on 13 topics concerning ore deposits: 1) ore-forming theory for superlarge ore deposits, 2) structure of ore fields and ore deposits, 3) paragenesis and paragenetic sequence, 4) experimental modeling of metallogeny, 5) kinetics and thermodynamics in ore-forming hydrothermal systems, 6) isotopic and trace element geochemistry of mineral deposits, 7) gold, silver, and uranium deposits, 8) stratiform and strata-bound deposits, 9) skarn deposits, 10) tin and tungsten deposits, 11) ore deposits in mafic and ultramafic rocks, 12) fluorite and barite deposits, and 13) manganese deposits. Important aspects discussed in this unique volume include the minerogenic (metallogenic) series of ore deposits, a concept developed especially from investigations of ore deposits in China during the past four decades. The setting and affiliation of giant ore deposits is treated in detail. Genetic interpretations for the formation of ore deposits included: 1) structural controls by cratonic margins, 2) transition zones between cratons and continental margins, 3) intersections of deep-seated mantle-rooted structures, 4) involvement of magmatism and sedimentation on the stable margins of the intraplate, 5) involvement of abundant volatiles and alkali metals, and 6) importance of rejuvenation in the formation of ore deposits. Other highlights of this volume include: 1) sulfide morphology and potassic alteration in Mississippi Valley ore deposits, 2) multiple generations of sulfide deposition, 3) the roles of liquid immiscibility, and immiscible salt-rich melts, and fluid mixing in ore deposition, 4) magmatic and greisen zonations, 5) REE fractionation in copper, fluorite, and massive sulfide deposits, 6) carbonatite-related fluorite ores, 7) ore fluid controls on trace element contents in wolframite, and 8) origin of reduced sulfur in Kupferschiefer ores. This volume is an important contribution to the literature on ore deposits, and is a volume which should be of interest to economic geologists, mineralogists, structural geologists, petrologists and geochemists.