水流体-黄铁矿/金之间的相互作用本质上是一个电化学反应过程，严重影响着金的活化和富集过程。受反应的复杂性和测试手段的影响，人们对高压水热体系下的黄铁矿、金的电化学腐蚀行为认识仍然存在诸多亟待解决的问题。本项目以黄铁矿和金为研究对象，将两者制作成电极装入高压釜中，在原位监测体系氧逸度的基础上开展水流体-黄铁矿/金电化学实验与溶解实验，深入考察温度、压力和溶液介质(以氯化钠为例)对水流体-金、(含/不含金氯络合物)水流体-黄铁矿相互作用的影响，揭示高温高压条件下水流体-黄铁矿/金的电化学反应机制。研究结果将加深人们对高压水热体系下的黄铁矿和金电化学行为的认识，为高压水热体系下的金/黄铁矿相互作用提供直接的实验证据；同时，研究成果将为金在热液体系下的活化机制、在黄铁矿中富集的关键控制因素及沉淀机制，以及金在黄铁矿中的赋存状态等金成矿作用科学问题的解决提供理论解释和实验依据。

The interaction of hydrothermal fluid-pyrite/gold is an electrochemical process in nature, and it seriously affects the activation and enrichment processes of gold. At present, there still exist many problems about pyrite and gold electrochemical behaviors under high temperature and high pressure (HTHP) conditions, for their complex interaction mechanisms and the limited measuring method. In this project, we will select pyrite and gold as samples, and they will made into electrodes and put into autoclave. Electrochemical experiments and dissolution experiments will carry out under in-situ monitor oxygen fugacity, further study the affection of temperature, stress and electrolytic composition (take NaCl for example) to hydrothermal fluid-gold and hydrothermal fluid (with/without gold chloride complex)-pyrite interaction, with an aim to reveal the interaction mechanism of hydrothermal fluid-pyrite/gold under HTHP conditions. The research results will deepen our understanding of the electrochemical behaviors of pyrite and gold under HTHP hydrothermal fluid, and provide direct experimental evidence for the interaction of gold/pyrite under high pressure hydrothermal system. Furthermore, the research results will provide theoretical explanation and experimental basis for the related scientific problems of gold mineralization, such as the activation mechanism of gold in hydrothermal fluid, the key control factors of enrichment on the pyrite surface and deposition mechanism, and the occurrence state of gold in pyrite.