ABSTRACT
The chloride solutions played an important role in the extraction of gold from silicate melts housing greenstone, black shale and other rocks as well as in its migration and concentration in gold-quartz deposits. In this context quantitative data on gold concentration in equilibrium chloride solutions obtained in an experimental study of the solubility of gold in them under conditions simulating natural ones are of interest. When studying the genesis of gold-quartz deposits located in terrigenous formations and in greenstone rocks, the fact of mineralisation in multiple stages should not be ignored. The principle of the process of gold concentration in quartz-vein bodies involves its mobilisation in many stages from a large volume of host rocks in which it was originally present in a dispersed form. An analysis of experimental and theoretical data on the effect of chloride solutions on the solubility of gold is of immense importance for understanding the genesis of gold-quartz deposits.
