中文摘要：

依据煤炭资源勘探资料，探讨了山西古交矿区邢家社勘探区石炭一二叠系煤中镓的分布状况及其地质影响因素。结果显示：研究区煤中镓的加权平均质量分数为15．87×10^-6，比全球平均值要高0．5～3倍；煤层层位降低，镓含量呈明显的递减趋势。同时，煤中镓含量与灰分产率、灰分组成、硫含量及煤层厚度之间也有明显的相关关系。这些特征表明，区内煤中镓的矿物载体主要为粘土矿物，水动力较强和还原性较弱的泥炭沼泽条件可能有利于镓在煤中富集，且成煤期地壳的稳定程度也可通过一定方式影响到煤中镓的富集。

英文摘要：

Gallium is an important basic and strategical material, and occurs in coal as a rare and dispersive metal element with various bound form. Based on the data from coal resource exploration, the authors in the paper discussed the occurrence and geological controls on the gallium in the Permo-Carboniferous coal seams from the Xingjiashe, Gujiao Mining District, Shanxi. The results show that the gallium in Xingjiashe coals is 15.87×10^-6 in weighted average content, and is 0.5 to 3 times more than mean content of the gallium in global coals. The gallium content tends evidently to reduce with depth of coal seams, and also is specifically relative to the coal ash yield and component, sulfur content and coal seam thickness. These indicate that gallium in Xingjiashe coals occurs mainly in clay mineral, might be enriched in the peat bog with the conditions of both stronger hydrodynamics and weaker reduction. Moreover, the activity of lithosphere during coal accumulation might impact the enrichment of gallium in coals through some ways.