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

杂物见有菱铁，铁白云，方，重晶、黄铁，锐钛，金，屑英，云母（或水云母），水铝等。