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

杂质有菱铁，铁白云石，方石，重晶石、黄铁，锐，红石，碎屑石英，云母（或水云母），水铝石等。