Journal of Earth Science Research

The Zhuanxinhu copper-silver polymetallic deposit is a recently discovered skarn-type copper-silver deposit in the Huanggangliang area. The mining area is located within the Late Variscan Inner Mongolian geosyncline fold belt in Sunite Right Banner, southwestern Greater Khingan Range. Building on previous work and previous studies, this paper investigates the alteration and mineralization characteristics of the Zhuanxinhu copper-silver polymetallic deposit through detailed field observations and systematic petrographic, mineralogy, and probe testing and analysis. Results indicate that the main types of wall rock alteration in this metal deposit are chloritization, silicification, limonite, and pyritization. The mineralization process can be divided into five stages: early skarn stage, late skarn stage, copper-silver oxide stage, quartz-sulfide stage, and late carbonate-fluorite stage. During the copper-silver oxide stage, copper- and silver-bearing minerals began to precipitate and accumulate. A comprehensive analysis of the deposit's production environment, mineralization characteristics, ore-controlling factors, and surrounding rock features suggests that the deposit is a medium- and low-temperature hydrothermal-filled copper-tin polymetallic deposit.

Alteration; Mineralization stage; Rock and mineral identification; Zhuanxinhu copper-silver polymetallic deposit