Enrichment characteristics and exploration prospect of gallium in Longtan Formation,Dazhai mine field,Guizhou Province
To study the enrichment characteristics of gallium resources in coal-bearing strata in Dazhai area,Panxian County,Guizhou Province,based on the testing data of 219 core samples collected from 9 boreholes within the area,the occurrence characteris-tics of gallium in the coal seam,roof,floor and gangue were studied in details by means of geochemistry and mathematical statistics.Gallium is mainly enriched in the clay minerals in the roof,floor and gangue,and the occurrence state is mainly replaced by the inor-ganic binding isomorphism.The average content of gallium in the floor and gangue is 37.86 μg/g and 36.42 μg/g,respectively.The av-erage content of Ga in the roof is 29.94 μg/g.The average content of the coal seam is 8.74 μg/g.In addition,gallium in the middle and lower part of Longtan Formation is more enriched than that in the upper part.The average gallium content of No.17-2 coal is the highest in the roof,and that of No.24 coal is the highest in the floor and gangue,which have reached the industrial grade.It shows that gallium has certain metallogenic prospect in the coal of Longtan Formation in Guizhou area.
万方数据
维普
