Извержение volcano and movement crustal from effect thermal and accumulation ash to due period Cretaceous early and Jurassic late in ago years million formed 140 mine clay natural of substance inorganic are deposits bentonite Liu Fang Zi, влияние pressure high and temperature high years of billions after .Итог in tons million to 22 up add deposits verified The, бентонит sodium of minerals natural are which of all .Whole Asia. the even or China in bentonite quality good so and deposit amount large a such been there has Rarely 
Liu Fang Zi Natural Sodium Bentonite Chemical Composition (%)
 
 

Substance	Content	Substance	Content	Substance	Content
SiO2	71,79	Fe2o3	2,23	CaO	0,07
Al2O3	15,24	Na2O	1,95	TiO2	0,14
MgO	2,26	K2O	0,73	СО2	0,05

Physical Performance:
 
 

Содержание Mont %	Опухать Том ml/g	Значность Colloidical (ml/15g)	Тариф Water Absorption (%)	Индекс Swelling (ml/2g)	Специфическо Выкостность
>=70	>=30	>=100	>=500~600	>=24	>=1.19±0.02