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，，、黄铁矿，锐钛矿，金红，碎屑英，母（或水母），水铝等。