Zhaocun bentonite deposit oringnated from tuff rich in volcanic hyalocrystalline,which underwent hydrolysis and alteration in Changxing county,Zhejiang province.The deposit has middle scale.

浙省长兴县赵村膨润土是由富含火山玻质的凝灰岩原地水解蚀变形成的膨润土,具中型规模。