CAJ | 학술논문

湘西凤凰地区茶田铅锌汞矿床位于上扬子地块东南边缘的武陵山弱变形带，区内褶皱、断裂发育，构造线方向由北北东往北东-北东东-近东西向逐步偏转，构成北东往吉首、古丈收敛，南西向黔境撒开的帚状弧形构造形态。矿床类型属于层控型低温热液矿床，具有稳定的含矿层位，铅锌汞矿资源量巨大。铅锌汞矿体的容矿岩层为寒武系中统敖溪组上段(C 2a3)细粉晶白云岩和下统清虚洞组(C 1q )灰岩白云岩。汞锌矿体或者铅锌矿体主要呈似层状及透镜状产于容矿层间带，汞锌矿和铅锌矿之间存在较明显的空间分带。蚀变类型主要为白云石化，次为硅化。两个容矿岩层分布范围较大，显示了良好的找矿潜力。
상서봉황지구다전연자홍광상위우상양자지괴동남변연적무릉산약변형대，구내습추、단렬발육，구조선방향유북북동왕북동-북동동-근동서향축보편전，구성북동왕길수、고장수렴，남서향검경살개적추상호형구조형태。광상류형속우층공형저온열액광상，구유은정적함광층위，연자홍광자원량거대。연자홍광체적용광암층위한무계중통오계조상단(C 2a3)세분정백운암화하통청허동조(C 1q )회암백운암。홍자광체혹자연자광체주요정사층상급투경상산우용광층간대，홍자광화연자광지간존재교명현적공간분대。식변류형주요위백운석화，차위규화。량개용광암층분포범위교대，현시료량호적조광잠력。
Chatian Pb-Zn-Hg deposit of Fenghuang area, Hunan province is located in the Wulingshan weak de-formation zone of southeastern margin of Yangtze block. The deposit belongs to stratabound hydrothermal type, with stable horizon ore bodies bearing huge amount of Pb-Zn-Hg resources. Lead-zinc-mercury bearing stra-ta are the Middle Cambrian Aoxi Formation (C2a3) crystal dolomite and Lower Permian Qingxudong Formation (C1q ) limestone dolomite. Hg-Zn or Pb-Zn ores are mainly stratoid and lenticular in host rock belt, there exist obvious spatial zonation between mercury zinc and lead-zinc ore bodies. Alteration types are mainly dolomiti-zation, followed by silicification. The widely distribution of Middle Cambrian Aoxi Formation (C2a3) and Lower Permian Qingxudong Formation (C1q ) in the study area indicated the great potential of Pb-Zn-Hg ores.