地壳浅部导电性矿物的一种新的压溶机制──应力原电池过程

A NEW MECHANISM FOR PRESSURE SOLUTION OF ELECTRICALLY-CONDUCTIVE MINERALS IN SHALLOW CRUST:A PROCESS OF STRESS GALVANIC CELL

以黄铁矿为例，通过导电性矿物的力学-电化学相互作用实验，得出：导电性矿物的电极电位与弹性轴压应力是较好的负线性相关关系。以此为基础，通过电化学理论分析，得出：地壳浅部与溶液接触的导电性矿物颗粒内部存在各种各样的应力原电池，通过应力原电池过程，压溶作用得以实现。导电性矿物应力原电池引起压涛作用的发现，无疑对诸如构造地球化学、地电化学甚至湿法冶金等领域的有关研究具有重要意义。

Our mechanical-electrochemical interaction experiments uslng pyrlte as an example indi-cated that the electrode potentials of conductive minerals are negatively related t0 the applied elas-tic stresses. On the basis of the experiments and Our theoretical analysis of electrochemistry, it isfound that inside the conductive minerals in contact with solutions in the shallow crust, there arevarious ga1vanic cells, and the pressure solution of conductive mineral is realized by the process ofthe stress galvanic cells. The discovery is no doubt significant to some studies concerned in suchfields as tectogeochemistry, geoelectrochemistry and even hydrometallurgy.