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

杂质矿物见有菱铁矿，铁白云，，晶、黄铁矿，锐钛矿，金红，碎屑英，云母（或水云母），水铝等。