Abstract
Abstract Based on quantitative and semi‐quantitative mathematical and mechanical analysis of the shape, motion, structural factors, stress field and deformation field of the ore‐hosting faults in the Xincheng‐Hexi gold deposit, the ore‐controlling features of faults and mineralization mechanism are discussed. It is concluded that the mineralization is controlled by the main faults, subsidiary fractures, joint density, mechanical features and deformation of the faults. The ore bodies are mainly located in the lower part of the convex crest and upper part of the concave trough of the main undulating fault surface. Mineralization is positively correlated to the development of subsidiary fractures and joints, which correspond to zones of low internal stress and high body strain and shear strain. They are favourable positions for mineralization and alteration.
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