There is siderite, iron dolomite , calcite, Barite, pyrite, anatase, rutile, piece quartz, the mica ( or hydromica ), diaspore,etc. in the impurity in the mineral .

杂质物见有菱铁，铁白云，方解，重晶、黄铁，锐钛，，屑英，云母（或水云母），水铝等。

Under supergene process influencing, kaolinites invered dickites, siderite were been ferritization, part of carbonate mineral have been dissoluted producing calcite.

在表生作用的影响下，高岭向地开转化，菱铁褐铁化，部分碳酸盐物溶解生成方解。