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地质概况矿区位于洞庭凹陷与湘中凹陷南东缘,连云山复背斜南东翼.区内出露前震旦系冷家溪群,为一套硅铝质碎屑岩层.构造以北东向褶皱为主,断裂为辅.岩浆岩沿断裂带成群产出,以酸性黑云母二长花岗岩为主,多呈岩枝产出,出露面积最大者为1.5平方公里,属燕山中晚期侵入体.蚀变具环状分带特征,由岩体向外为强蚀变(角岩)带→中等蚀变(斑点板岩)带→未蚀变板岩;向
Geological Survey The ore area is located in the Dongting Sag and the southern edge of the Xiangzhong Sag and the southern east wing of the Lianyun anticline, exposing the former Sinian Lengjiali Group and forming a Si-Al clastic formation. Fold-dominated and fault-fractured.The magmatic rocks are produced along the fault zones in a group, mainly acidic biotite monzogranite, mostly with rock branches, with the largest exposed area of 1.5 square kilometers, belonging to the middle and late Yanshanian intrusion Body alteration with annular zoning characteristics, from the rock mass strong alteration (horn rock) → moderate alteration (speckled slate) → unaltered slate; to