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

在电镜下观察到与氧化（金红石或锐）成交代关系，说明是交代成。

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硫锰和硫砷锑、碱性火山灰成态锐和陆源碎屑成斜绿泥石。

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，铁白云石，方解石，重晶石、黄铁，锐，金红石，碎屑石英，云母（或水云母），水铝石等。