安徽嘉山坡缕石结构特征的成因意义

THE GENETIC SIGNIFICANCE OF STRUCTURAL CHARACTERISTICS OF PALYGORSKITE FROM JIASHAN,ANHUI PROVINCE

本文对取自安徽嘉山坡缕石矿床不同层位的坡缕石粘土所做的红外光谱和Ｘ射线衍射分析表明：不同层位粘土的结构类型不同，坡缕石含量高的层位其结晶（对称）程度低，为单斜晶系，坡缕石含量低的层位其结晶（对称）程度高，为斜方晶系。文中对坡缕石的形成机理和造成结晶（对称）程度差异的原因进行了分析。

The palygorskite clays from different beds of Jiashan palgorskite deposit,Anhui province,were studied by IR and XRD.It is found that there are differences in the structural characteristics of clays in different beds.In the bed with higher content of palygorskite,the palygorskite has lower crystallinity which displays clinorhombic system.In the bed with lower content of palygorskite,the palygorskite has higher crystallinity which displays orthorhombic system.The forming mechanism of palygorskite and the cause of cystallinity differences are discussed in this paper.