Geological Characteristics and Genesis of Bentonite Deposit in Zhuli,Weifang
Weifang Zhuli bentonite mine is a terrestrial volcanic sedimentary hydrolytic alteration bentonite deposit,its mineral geological background,ore body characteristics,deposit genesis and other contents are analyzed.Cretaceous Castle Peak Group Shiqianzhuang group is this type of bentonite deposits of endowment layer,the study area fault basin for its mineralization provides a spatial place;the original rock for a set of moderate acid volcanic agglomerate,rhyolite,moderate acid tuff breccia,andesite tuff construction;in the fluid oxidative environment,the alkaline interlayer water,fissure pore water and the common role of the original rock hydrolysis and alteration,the formation of bentonite deposits.The pyroclastic rocks not far from the volcanic passage or the volcanic lava basins formed not far from the volcanic passage(Fangzi depression)provide space for bentonite mineralization.The ore body is mostly layered,seemingly layered,dip angle is generally less than 20 °,mineralization is more uniform,the type of deposit is generally larger.
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