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董家院金矿区位于广元市东溪河乡和花石乡境内。该区属于丁家林—太阳坪韧性剪切带的南西延长部分。该韧性剪切带是阳平关—勉县深大断裂所派生的产物,大地构造位置处于扬子地台、秦岭及松潘—甘孜褶皱带结合部的茂县群地体。区内含矿地层主要为志留系黄坪组及滑天坡组,系由浅海相、浅变质、强变形的细碎屑岩建造组成,地层岩石泥质成分含量较高,较普遍发育千枚理和含Fe、Mg、Ca的碳酸盐质斑点状构
Dongjianying gold mine is located in Guangyuan City, East Township and Hualishi Township. The area belongs to Dingjia Lin - the Taiyangping ductile shear zone of the extension of the South West. The ductile shear zone is a product derived from the Yangpingguan-Mianxian deep fault, and the tectonic location is located in the Maoxian group of the junction of the Yangtze platform, Qinling and Songpan-Ganzi fold belt. The ore-bearing strata in the area are mainly composed of the Huangping Formation and the Silibianpo Formation of the Silurian, which are composed of shallow marine facies, super-metamorphic and strongly deformed fine clastic rocks. The content of shale rock components in the area is relatively high, Entries and containing Fe, Mg, Ca carbonate dot structure