万山地区风化环境中汞的活动行为探讨

A STUDY ON THE BEHAVIOR OF MERCURY IN WEATHERING ENVIRONMENT IN WANSHAN DISTRICT

Studies of supergenic dispersion, migration and enrichment of mercury and other elements in stratabound ore deposits are of great importance both in theory and in practice. In special reference to the Wanshan mercury ore deposit, this paper discussed the mechanism of supergenic migration Of mercury and its associated elements lead,sine, antimony, etc. In this paper the focus of the disoussion is placed on the existing forms of mercury, the rules governing the migration and the enrichment of.mercury and its associated elements in the process of weathering and some aspects of the simulating experiment on weathering of carbonates. Three existing forms of mercury are reeognized in carbonates: cinnabar minerals,isomorphs and inelusions, and ionic forms and adsorbed colloids. The migration of mercury together with its associated elements in the process of weathering follows the sequence : SiO2→Pb→Hg→Sb→Zn. The results of the simulating experiment on weathering of carbonates show that the products of weathering contsin more mercnry and associated elements than the original rocks.

Studies of supergenic dispersion, migration and enrichment of mercury and other elements in stratabound ore deposits are of great importance both in theory and in practice. In special reference to the Wanshan mercury ore deposit, this paper discus-sed the mechanism of supergenic migration of mercury and its associated elements lead, zinc, antimony, etc. In this paper the focus of the discussion is placed on the existing forms of mercury, the rules governing the migration and the enrichment of mercury and its associated elements in the process of weathering and some aspects of the simulating experiment on weathering of carbonates.Three existing forms of mercury are recognized in carbonates: cinnabar minerals, isomorphs and inclusions, and ionic forms and adsorbed colloids. The migration of mer-cury together with its associated elements in the process of weathering follows the se-quence : Si02 → Pb → Hg → Sb →Zn. The results of the simulating experiment on weathering of carbonates show that the products of weathering contain more mercury and associated elements than the original rocks.