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.
在西南地区晚二叠世煤中首次发现了热液成因的锰矿锑矿、碱性火山灰成因的胶锐钛矿陆源碎屑成因的石。
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.
在西南地区晚二叠世煤中首次发现了热液成因的锰矿锑矿、碱性火山灰成因的胶锐钛矿陆源碎屑成因的石。
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