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Advances of Geochemical Behavior of Chalcophile Elements and Applications in Metallogeny of Magmatic Cu—Ni—PGE Sulfide Deposits
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摘要

///This paper summarizes the behavior of sulfur and chalcophile elements in magma evolution, and demonstrates their application in the study of magmatic sulfide deposits. They are discussed from five factors: 1) by the study of sulfur solubility in basaltic magma, four factors control the sulfide segregation: magma mixing, rapid temperature decrease, crustal contamination, and rapid crystal fractionation; 2) according to the distribution of Ni between olivine and silicate magma, we simulate the correlated change of Ni in olivine to Fo; 3) the D values of Ni—Cu and PGE between sulfide liquid and silicate melt is are summarized, and the controlling factors to D value and R-factor are discussed also; 4) when olivine is surrounded by sulfide liquid, the interaction will happen, and Ni content in sulfide liquid can be estimated; and 5) by the distribution of chalcophile elements between MSS and sulfide liquid, the facts of ore-forming zonations are summarized. At the end, the present problems and direction of development are analyzed and suggested.

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