Metallogenic Geological Characteristics and Ore Genesis of the Purple Clay Deposit in Pingding County,Shanxi Province
The purple clay deposit in Pingding county mainly occurs in the fourth section of the Permian Shihezi formation.The structure in the area is not well-developed,and no magmatic rocks are exposed,5 layers of the bodies,with SiO2 content of 51.51%～64.32%and an average of 59.12%.The Al2O3 content ranges from 18.07%to 26.88%,with an average of 20.36%;The plasticity index ranges from 9.44 to 28.06,with an average of 16.43.The ore quality is excellent.This article analyzes and summarizes the geological conditions of the mining area,ore body,and firing tests,and believes that the deposit was formed in a lake environment during the Late Permian period.
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