Ore-forming materials and REE possess multi-sources,RE partitioningmodel of magmatic rock shows a differant origin compared to that of country rock. 成矿物质及稀土元素具多来源性，岩浆岩及围岩中稀土配分模式显示其具不同成因特征。
Distribution patterns of the rare-earth element in coal are similar for the coals from the same district, and different for the coals of different districts. 同一矿区晚二叠世煤的稀土元素配分模式具有一定的相似性，而不同地区晚二叠世煤的稀土元素配分模式则差异较大。
