Au的迁移形式及沉淀机制研究的某些进展

RESEARCH PROGRESSES ON THE TRANSPORT FORMS AND DEPOSITIONAL MECHANISMS OF GOLD

本文主要概述国外Ａｕ的迁移形式及沉淀机制研究的进展．Ａｕ可呈多种形式迁移，在低温热浪中，主要呈硫氢络合物或与有机质吸附在一起搬运；而在高温热液系统中，Ａｕ主要以氯络合物形式迁移。成矿流体沸腾、有机质作用、非晶态硫化物表面吸附及流体混合与围岩的相互作用等是金矿床形成的主要机理．

The author mainly discusses the research progresses on the transport forms and depositional mechanisms of gold. Gold can be transported in many forms, mainly with the forms of gold hydro--sulphido--complexes or absorped by the organic matter in the epithermal system, whereas, in the high temperature hydrothermal system and transported in form of gold chloride complexes. The ore-forming fluid boiling, absorption of organic matter, role of colloid and mineral surfaces, fluid mixing and the interaction with wall rocks are likely main mechanisms which form the gold deposits.