本文主要通过区域背景分析筛选出青海省木里煤田具有工业品位的镓（Ga）金属微量元素及其赋存的地区和煤层，研究具有开发利用价值的金属微量元素--镓的富集规律，探索煤中有益微量元素资源评价的方法体系并初步估算资源量，进而探讨镓元素的开采、回收的可能性和经济价值，为青海省煤系地层评价其他特殊金属微量元素提供参考。 通过本文研究得到如下结论： 1）青海省木里煤田中侏罗统地层中Ga金属元素在大部分矿区中含量未达到边界品位，但在煤田西部的外力哈达矿区的曲古沟井田以及海塔尔矿区内部，存在Ga含量超过边界品位的部分区域。 2）镓在青海省木里煤田不同矿区煤层顶底板和煤层夹矸中含量高，在煤层中含量低；在各煤层垂向上的变化趋势基本相同。 3）青海省木里煤田中侏罗统地层中镓元素赋存在硅酸铝盐矿物中，特别是粘土矿物中；煤中镓含量呈东高西低的总体分布趋势；Ga元素富集矿区的平面分布表现为从矿区边缘向矿区中心逐渐增高的特点；在东部矿区，煤中Ga含量的垂向分布表现为浅部煤层较深部煤层富集现象，指示沉积环境也是造成这种分布差异的地质原因；煤层与围岩之间存在物质交换，与元素本身固有的化学性质有关。

In this paper, through the analysis of regional background, we have selected industrially-produced gallium (Ga) metal trace elements and their existing areas and coal seams in the Muli coalfield Qinghai Province, and studied the enrichment rules of the metal trace elements, ie, niobium, that have value for development and utilization, and explored coal. The method system for the evaluation of beneficial trace element resources and the initial estimate of the amount of resources, and then explore the possibility and economic value of the mining and recovery of the lanthanum element, and provide reference for the evaluation of other special metal trace elements in the coal measures of Qinghai Province. Through the study of this paper we have the following conclusions: 1) The content of Ga metal in the middle Jurassic strata of the Muli coalfield Qinghai Province does not reach the boundary grade in most of the mining areas, but Ga content exceeds the boundary in the Qugugou field and the Haita mining area of the Hada mine in the west of the coal field. Some areas of taste. 2) The contents of coal seams in the top and bottom layers of coal seams and coal seams in different coal mines in the Muli coalfield Qinghai Province are high and low in the coal seams; the changes in the vertical direction of the coal seams are basically the same. 3) In the middle Jurassic strata of the Muli coalfield Qinghai Province, the niobium element is present in the aluminum silicate minerals, especially in the clay minerals; the total distribution of niobium in the coal is high in the east and low in the west; the plane distribution in the Ga-rich zone is found. It is characterized by a gradual increase from the edge of the mining area to the center of the mining area. In the eastern mining area, the vertical distribution of Ga content in the coal is represented by the deeper coal layer enrichment phenomenon in the shallow coal layer, indicating that the sedimentary environment is also the geological cause of this distributional difference. The exchange of material between the coal seam and the surrounding rock is related to the inherent chemical properties of the element itself.