Electronmicroscopic examination shows that Ti-oxide (rutile or anatase) is replaced by brannerite, indicat-ing the metasomatic origin of brannerite.

在电镜下观察到钛铀与钛的氧化（或锐钛）成交代关系，说明钛铀是交代成因的。

The alabandite and getchellite of hydrothermal origin, cement anatase of alkaline volcanic origin, and the high content of chlorite in coal were fist found in coals.

在西南区晚二叠世煤中首次发现了热液成因的硫锰和硫砷、性火山灰成因的胶态锐钛和陆源碎屑成因的斜绿泥。

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，，碎屑英，云母（或水云母），水铝等。