火山玻璃

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.

浙江省长兴县赵村膨润土是富含火山玻璃灰岩原地水解蚀变形成膨润土床,床具中型规模。